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pezkuwi-subxt/substrate/frame/staking/src/tests.rs
T
Ross Bulat 7a32f4be48 Deprecate RewardDestination::Controller (#2380) 
Deprecates `RewardDestination::Controller` variant.

- [x] `RewardDestination::Controller` annotated with `#[deprecated]`.
- [x] `Controller` variant is now handled the same way as `Stash` in
`payout_stakers`.
- [x] `set_payee` errors if `RewardDestination::Controller` is provided.
- [x] Added `update_payee` call to lazily migrate
`RewardDestination::Controller` `Payee` storage entries to
`RewardDestination::Account(controller)` .
- [x] `payout_stakers_dead_controller` has been removed from benches &
weights - was not used.
- [x] Tests no longer use `RewardDestination::Controller`.

---------

Co-authored-by: command-bot <>
Co-authored-by: Gonçalo Pestana <g6pestana@gmail.com>
Co-authored-by: georgepisaltu <52418509+georgepisaltu@users.noreply.github.com>
2023-11-22 11:22:28 +02:00

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// This file is part of Substrate.
// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Tests for the module.
use super::{ConfigOp, Event, *};
use crate::ledger::StakingLedgerInspect;
use frame_election_provider_support::{
bounds::{DataProviderBounds, ElectionBoundsBuilder},
ElectionProvider, SortedListProvider, Support,
};
use frame_support::{
assert_noop, assert_ok, assert_storage_noop,
dispatch::{extract_actual_weight, GetDispatchInfo, WithPostDispatchInfo},
pallet_prelude::*,
traits::{Currency, Get, ReservableCurrency},
};
use mock::*;
use pallet_balances::Error as BalancesError;
use sp_runtime::{
assert_eq_error_rate, bounded_vec,
traits::{BadOrigin, Dispatchable},
Perbill, Percent, Perquintill, Rounding, TokenError,
};
use sp_staking::{
offence::{DisableStrategy, OffenceDetails, OnOffenceHandler},
SessionIndex,
};
use sp_std::prelude::*;
use substrate_test_utils::assert_eq_uvec;
#[test]
fn set_staking_configs_works() {
ExtBuilder::default().build_and_execute(|| {
// setting works
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Set(1_500),
ConfigOp::Set(2_000),
ConfigOp::Set(10),
ConfigOp::Set(20),
ConfigOp::Set(Percent::from_percent(75)),
ConfigOp::Set(Zero::zero())
));
assert_eq!(MinNominatorBond::<Test>::get(), 1_500);
assert_eq!(MinValidatorBond::<Test>::get(), 2_000);
assert_eq!(MaxNominatorsCount::<Test>::get(), Some(10));
assert_eq!(MaxValidatorsCount::<Test>::get(), Some(20));
assert_eq!(ChillThreshold::<Test>::get(), Some(Percent::from_percent(75)));
assert_eq!(MinCommission::<Test>::get(), Perbill::from_percent(0));
// noop does nothing
assert_storage_noop!(assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Noop
)));
// removing works
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove
));
assert_eq!(MinNominatorBond::<Test>::get(), 0);
assert_eq!(MinValidatorBond::<Test>::get(), 0);
assert_eq!(MaxNominatorsCount::<Test>::get(), None);
assert_eq!(MaxValidatorsCount::<Test>::get(), None);
assert_eq!(ChillThreshold::<Test>::get(), None);
assert_eq!(MinCommission::<Test>::get(), Perbill::from_percent(0));
});
}
#[test]
fn force_unstake_works() {
ExtBuilder::default().build_and_execute(|| {
// Account 11 (also controller) is stashed and locked
assert_eq!(Staking::bonded(&11), Some(11));
// Adds 2 slashing spans
add_slash(&11);
// Cant transfer
assert_noop!(
Balances::transfer_allow_death(RuntimeOrigin::signed(11), 1, 10),
TokenError::Frozen,
);
// Force unstake requires root.
assert_noop!(Staking::force_unstake(RuntimeOrigin::signed(11), 11, 2), BadOrigin);
// Force unstake needs correct number of slashing spans (for weight calculation)
assert_noop!(
Staking::force_unstake(RuntimeOrigin::root(), 11, 0),
Error::<Test>::IncorrectSlashingSpans
);
// We now force them to unstake
assert_ok!(Staking::force_unstake(RuntimeOrigin::root(), 11, 2));
// No longer bonded.
assert_eq!(Staking::bonded(&11), None);
// Transfer works.
assert_ok!(Balances::transfer_allow_death(RuntimeOrigin::signed(11), 1, 10));
});
}
#[test]
fn kill_stash_works() {
ExtBuilder::default().build_and_execute(|| {
// Account 11 (also controller) is stashed and locked
assert_eq!(Staking::bonded(&11), Some(11));
// Adds 2 slashing spans
add_slash(&11);
// Only can kill a stash account
assert_noop!(Staking::kill_stash(&12, 0), Error::<Test>::NotStash);
// Respects slashing span count
assert_noop!(Staking::kill_stash(&11, 0), Error::<Test>::IncorrectSlashingSpans);
// Correct inputs, everything works
assert_ok!(Staking::kill_stash(&11, 2));
// No longer bonded.
assert_eq!(Staking::bonded(&11), None);
});
}
#[test]
fn basic_setup_works() {
// Verifies initial conditions of mock
ExtBuilder::default().build_and_execute(|| {
// Account 11 is stashed and locked, and is the controller
assert_eq!(Staking::bonded(&11), Some(11));
// Account 21 is stashed and locked and is the controller
assert_eq!(Staking::bonded(&21), Some(21));
// Account 1 is not a stashed
assert_eq!(Staking::bonded(&1), None);
// Account 11 controls its own stash, which is 100 * balance_factor units
assert_eq!(
Ledger::get(&11).unwrap(),
StakingLedgerInspect::<Test> {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Account 21 controls its own stash, which is 200 * balance_factor units
assert_eq!(
Ledger::get(&21).unwrap(),
StakingLedgerInspect::<Test> {
stash: 21,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Account 1 does not control any stash
assert!(Staking::ledger(1.into()).is_err());
// ValidatorPrefs are default
assert_eq_uvec!(
<Validators<Test>>::iter().collect::<Vec<_>>(),
vec![
(31, ValidatorPrefs::default()),
(21, ValidatorPrefs::default()),
(11, ValidatorPrefs::default())
]
);
assert_eq!(
Staking::ledger(101.into()).unwrap(),
StakingLedgerInspect {
stash: 101,
total: 500,
active: 500,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
assert_eq!(
Staking::eras_stakers(active_era(), &11),
Exposure {
total: 1125,
own: 1000,
others: vec![IndividualExposure { who: 101, value: 125 }]
},
);
assert_eq!(
Staking::eras_stakers(active_era(), &21),
Exposure {
total: 1375,
own: 1000,
others: vec![IndividualExposure { who: 101, value: 375 }]
},
);
// initial total stake = 1125 + 1375
assert_eq!(Staking::eras_total_stake(active_era()), 2500);
// The number of validators required.
assert_eq!(Staking::validator_count(), 2);
// Initial Era and session
assert_eq!(active_era(), 0);
// Account 10 has `balance_factor` free balance
assert_eq!(Balances::free_balance(10), 1);
assert_eq!(Balances::free_balance(10), 1);
// New era is not being forced
assert_eq!(Staking::force_era(), Forcing::NotForcing);
});
}
#[test]
fn change_controller_works() {
ExtBuilder::default().build_and_execute(|| {
let (stash, controller) = testing_utils::create_unique_stash_controller::<Test>(
0,
100,
RewardDestination::Staked,
false,
)
.unwrap();
// ensure `stash` and `controller` are bonded as stash controller pair.
assert_eq!(Staking::bonded(&stash), Some(controller));
// `controller` can control `stash` who is initially a validator.
assert_ok!(Staking::chill(RuntimeOrigin::signed(controller)));
// sets controller back to `stash`.
assert_ok!(Staking::set_controller(RuntimeOrigin::signed(stash)));
assert_eq!(Staking::bonded(&stash), Some(stash));
mock::start_active_era(1);
// `controller` is no longer in control. `stash` is now controller.
assert_noop!(
Staking::validate(RuntimeOrigin::signed(controller), ValidatorPrefs::default()),
Error::<Test>::NotController,
);
assert_ok!(Staking::validate(RuntimeOrigin::signed(stash), ValidatorPrefs::default()));
})
}
#[test]
fn change_controller_already_paired_once_stash() {
ExtBuilder::default().build_and_execute(|| {
// 11 and 11 are bonded as controller and stash respectively.
assert_eq!(Staking::bonded(&11), Some(11));
// 11 is initially a validator.
assert_ok!(Staking::chill(RuntimeOrigin::signed(11)));
// Controller cannot change once matching with stash.
assert_noop!(
Staking::set_controller(RuntimeOrigin::signed(11)),
Error::<Test>::AlreadyPaired
);
assert_eq!(Staking::bonded(&11), Some(11));
mock::start_active_era(1);
// 10 is no longer in control.
assert_noop!(
Staking::validate(RuntimeOrigin::signed(10), ValidatorPrefs::default()),
Error::<Test>::NotController,
);
assert_ok!(Staking::validate(RuntimeOrigin::signed(11), ValidatorPrefs::default()));
})
}
#[test]
fn rewards_should_work() {
ExtBuilder::default().nominate(true).session_per_era(3).build_and_execute(|| {
let init_balance_11 = Balances::total_balance(&11);
let init_balance_21 = Balances::total_balance(&21);
let init_balance_101 = Balances::total_balance(&101);
// Set payees
Payee::<Test>::insert(11, RewardDestination::Account(11));
Payee::<Test>::insert(21, RewardDestination::Account(21));
Payee::<Test>::insert(101, RewardDestination::Account(101));
Pallet::<Test>::reward_by_ids(vec![(11, 50)]);
Pallet::<Test>::reward_by_ids(vec![(11, 50)]);
// This is the second validator of the current elected set.
Pallet::<Test>::reward_by_ids(vec![(21, 50)]);
// Compute total payout now for whole duration of the session.
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
let maximum_payout = maximum_payout_for_duration(reward_time_per_era());
start_session(1);
assert_eq_uvec!(Session::validators(), vec![11, 21]);
assert_eq!(Balances::total_balance(&11), init_balance_11);
assert_eq!(Balances::total_balance(&21), init_balance_21);
assert_eq!(Balances::total_balance(&101), init_balance_101);
assert_eq!(
Staking::eras_reward_points(active_era()),
EraRewardPoints {
total: 50 * 3,
individual: vec![(11, 100), (21, 50)].into_iter().collect(),
}
);
let part_for_11 = Perbill::from_rational::<u32>(1000, 1125);
let part_for_21 = Perbill::from_rational::<u32>(1000, 1375);
let part_for_101_from_11 = Perbill::from_rational::<u32>(125, 1125);
let part_for_101_from_21 = Perbill::from_rational::<u32>(375, 1375);
start_session(2);
start_session(3);
assert_eq!(active_era(), 1);
assert_eq!(mock::RewardRemainderUnbalanced::get(), maximum_payout - total_payout_0,);
assert_eq!(
*mock::staking_events().last().unwrap(),
Event::EraPaid {
era_index: 0,
validator_payout: total_payout_0,
remainder: maximum_payout - total_payout_0
}
);
mock::make_all_reward_payment(0);
assert_eq_error_rate!(
Balances::total_balance(&11),
init_balance_11 + part_for_11 * total_payout_0 * 2 / 3,
2,
);
assert_eq_error_rate!(
Balances::total_balance(&21),
init_balance_21 + part_for_21 * total_payout_0 * 1 / 3,
2,
);
assert_eq_error_rate!(
Balances::total_balance(&101),
init_balance_101 +
part_for_101_from_11 * total_payout_0 * 2 / 3 +
part_for_101_from_21 * total_payout_0 * 1 / 3,
2
);
assert_eq_uvec!(Session::validators(), vec![11, 21]);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
assert_eq!(
mock::RewardRemainderUnbalanced::get(),
maximum_payout * 2 - total_payout_0 - total_payout_1,
);
assert_eq!(
*mock::staking_events().last().unwrap(),
Event::EraPaid {
era_index: 1,
validator_payout: total_payout_1,
remainder: maximum_payout - total_payout_1
}
);
mock::make_all_reward_payment(1);
assert_eq_error_rate!(
Balances::total_balance(&11),
init_balance_11 + part_for_11 * (total_payout_0 * 2 / 3 + total_payout_1),
2,
);
assert_eq_error_rate!(
Balances::total_balance(&21),
init_balance_21 + part_for_21 * total_payout_0 * 1 / 3,
2,
);
assert_eq_error_rate!(
Balances::total_balance(&101),
init_balance_101 +
part_for_101_from_11 * (total_payout_0 * 2 / 3 + total_payout_1) +
part_for_101_from_21 * total_payout_0 * 1 / 3,
2
);
});
}
#[test]
fn staking_should_work() {
ExtBuilder::default().nominate(false).build_and_execute(|| {
// remember + compare this along with the test.
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// put some money in account that we'll use.
for i in 1..5 {
let _ = Balances::make_free_balance_be(&i, 2000);
}
// --- Block 2:
start_session(2);
// add a new candidate for being a validator. account 3 controlled by 4.
assert_ok!(Staking::bond(RuntimeOrigin::signed(3), 1500, RewardDestination::Account(3)));
assert_ok!(Staking::validate(RuntimeOrigin::signed(3), ValidatorPrefs::default()));
assert_ok!(Session::set_keys(
RuntimeOrigin::signed(3),
SessionKeys { other: 4.into() },
vec![]
));
// No effects will be seen so far.
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// --- Block 3:
start_session(3);
// No effects will be seen so far. Era has not been yet triggered.
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// --- Block 4: the validators will now be queued.
start_session(4);
assert_eq!(active_era(), 1);
// --- Block 5: the validators are still in queue.
start_session(5);
// --- Block 6: the validators will now be changed.
start_session(6);
assert_eq_uvec!(validator_controllers(), vec![21, 3]);
// --- Block 6: Unstake 4 as a validator, freeing up the balance stashed in 3
// 4 will chill
Staking::chill(RuntimeOrigin::signed(3)).unwrap();
// --- Block 7: nothing. 3 is still there.
start_session(7);
assert_eq_uvec!(validator_controllers(), vec![21, 3]);
// --- Block 8:
start_session(8);
// --- Block 9: 4 will not be a validator.
start_session(9);
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// Note: the stashed value of 4 is still lock
assert_eq!(
Staking::ledger(3.into()).unwrap(),
StakingLedgerInspect {
stash: 3,
total: 1500,
active: 1500,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// e.g. it cannot reserve more than 500 that it has free from the total 2000
assert_noop!(Balances::reserve(&3, 501), BalancesError::<Test, _>::LiquidityRestrictions);
assert_ok!(Balances::reserve(&3, 409));
});
}
#[test]
fn blocking_and_kicking_works() {
ExtBuilder::default()
.minimum_validator_count(1)
.validator_count(4)
.nominate(true)
.build_and_execute(|| {
// block validator 10/11
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { blocked: true, ..Default::default() }
));
// attempt to nominate from 100/101...
assert_ok!(Staking::nominate(RuntimeOrigin::signed(101), vec![11]));
// should have worked since we're already nominated them
assert_eq!(Nominators::<Test>::get(&101).unwrap().targets, vec![11]);
// kick the nominator
assert_ok!(Staking::kick(RuntimeOrigin::signed(11), vec![101]));
// should have been kicked now
assert!(Nominators::<Test>::get(&101).unwrap().targets.is_empty());
// attempt to nominate from 100/101...
assert_noop!(
Staking::nominate(RuntimeOrigin::signed(101), vec![11]),
Error::<Test>::BadTarget
);
});
}
#[test]
fn less_than_needed_candidates_works() {
ExtBuilder::default()
.minimum_validator_count(1)
.validator_count(4)
.nominate(false)
.build_and_execute(|| {
assert_eq!(Staking::validator_count(), 4);
assert_eq!(Staking::minimum_validator_count(), 1);
assert_eq_uvec!(validator_controllers(), vec![31, 21, 11]);
mock::start_active_era(1);
// Previous set is selected. NO election algorithm is even executed.
assert_eq_uvec!(validator_controllers(), vec![31, 21, 11]);
// But the exposure is updated in a simple way. No external votes exists.
// This is purely self-vote.
assert!(ErasStakersPaged::<Test>::iter_prefix_values((active_era(),))
.all(|exposure| exposure.others.is_empty()));
});
}
#[test]
fn no_candidate_emergency_condition() {
ExtBuilder::default()
.minimum_validator_count(1)
.validator_count(15)
.set_status(41, StakerStatus::Validator)
.nominate(false)
.build_and_execute(|| {
// initial validators
assert_eq_uvec!(validator_controllers(), vec![11, 21, 31, 41]);
let prefs = ValidatorPrefs { commission: Perbill::one(), ..Default::default() };
Validators::<Test>::insert(11, prefs.clone());
// set the minimum validator count.
MinimumValidatorCount::<Test>::put(11);
// try to chill
let res = Staking::chill(RuntimeOrigin::signed(11));
assert_ok!(res);
let current_era = CurrentEra::<Test>::get();
// try trigger new era
mock::run_to_block(21);
assert_eq!(*staking_events().last().unwrap(), Event::StakingElectionFailed);
// No new era is created
assert_eq!(current_era, CurrentEra::<Test>::get());
// Go to far further session to see if validator have changed
mock::run_to_block(100);
// Previous ones are elected. chill is not effective in active era (as era hasn't
// changed)
assert_eq_uvec!(validator_controllers(), vec![11, 21, 31, 41]);
// The chill is still pending.
assert!(!Validators::<Test>::contains_key(11));
// No new era is created.
assert_eq!(current_era, CurrentEra::<Test>::get());
});
}
#[test]
fn nominating_and_rewards_should_work() {
ExtBuilder::default()
.nominate(false)
.set_status(41, StakerStatus::Validator)
.set_status(11, StakerStatus::Idle)
.set_status(31, StakerStatus::Idle)
.build_and_execute(|| {
// initial validators.
assert_eq_uvec!(validator_controllers(), vec![41, 21]);
// re-validate with 11 and 31.
assert_ok!(Staking::validate(RuntimeOrigin::signed(11), Default::default()));
assert_ok!(Staking::validate(RuntimeOrigin::signed(31), Default::default()));
// Set payee to controller.
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(21), RewardDestination::Stash));
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(31), RewardDestination::Stash));
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(41), RewardDestination::Stash));
// give the man some money
let initial_balance = 1000;
for i in [1, 3, 5, 11, 21].iter() {
let _ = Balances::make_free_balance_be(i, initial_balance);
}
// bond two account pairs and state interest in nomination.
assert_ok!(Staking::bond(
RuntimeOrigin::signed(1),
1000,
RewardDestination::Account(1)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(1), vec![11, 21, 31]));
assert_ok!(Staking::bond(
RuntimeOrigin::signed(3),
1000,
RewardDestination::Account(3)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![11, 21, 41]));
// the total reward for era 0
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(41, 1)]);
Pallet::<Test>::reward_by_ids(vec![(21, 1)]);
mock::start_active_era(1);
// 10 and 20 have more votes, they will be chosen.
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// old validators must have already received some rewards.
let initial_balance_41 = Balances::total_balance(&41);
let mut initial_balance_21 = Balances::total_balance(&21);
mock::make_all_reward_payment(0);
assert_eq!(Balances::total_balance(&41), initial_balance_41 + total_payout_0 / 2);
assert_eq!(Balances::total_balance(&21), initial_balance_21 + total_payout_0 / 2);
initial_balance_21 = Balances::total_balance(&21);
assert_eq!(ErasStakersPaged::<Test>::iter_prefix_values((active_era(),)).count(), 2);
assert_eq!(
Staking::eras_stakers(active_era(), &11),
Exposure {
total: 1000 + 800,
own: 1000,
others: vec![
IndividualExposure { who: 1, value: 400 },
IndividualExposure { who: 3, value: 400 },
]
},
);
assert_eq!(
Staking::eras_stakers(active_era(), &21),
Exposure {
total: 1000 + 1200,
own: 1000,
others: vec![
IndividualExposure { who: 1, value: 600 },
IndividualExposure { who: 3, value: 600 },
]
},
);
// the total reward for era 1
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(21, 2)]);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(2);
// nothing else will happen, era ends and rewards are paid again, it is expected that
// nominators will also be paid. See below
mock::make_all_reward_payment(1);
let payout_for_11 = total_payout_1 / 3;
let payout_for_21 = 2 * total_payout_1 / 3;
// Nominator 2: has [400/1800 ~ 2/9 from 10] + [600/2200 ~ 3/11 from 21]'s reward. ==>
// 2/9 + 3/11
assert_eq_error_rate!(
Balances::total_balance(&1),
initial_balance + (2 * payout_for_11 / 9 + 3 * payout_for_21 / 11),
2,
);
// Nominator 3: has [400/1800 ~ 2/9 from 10] + [600/2200 ~ 3/11 from 21]'s reward. ==>
// 2/9 + 3/11
assert_eq_error_rate!(
Balances::total_balance(&3),
initial_balance + (2 * payout_for_11 / 9 + 3 * payout_for_21 / 11),
2,
);
// Validator 11: got 800 / 1800 external stake => 8/18 =? 4/9 => Validator's share = 5/9
assert_eq_error_rate!(
Balances::total_balance(&11),
initial_balance + 5 * payout_for_11 / 9,
2,
);
// Validator 21: got 1200 / 2200 external stake => 12/22 =? 6/11 => Validator's share =
// 5/11
assert_eq_error_rate!(
Balances::total_balance(&21),
initial_balance_21 + 5 * payout_for_21 / 11,
2,
);
});
}
#[test]
fn nominators_also_get_slashed_pro_rata() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
let slash_percent = Perbill::from_percent(5);
let initial_exposure = Staking::eras_stakers(active_era(), &11);
// 101 is a nominator for 11
assert_eq!(initial_exposure.others.first().unwrap().who, 101);
// staked values;
let nominator_stake = Staking::ledger(101.into()).unwrap().active;
let nominator_balance = balances(&101).0;
let validator_stake = Staking::ledger(11.into()).unwrap().active;
let validator_balance = balances(&11).0;
let exposed_stake = initial_exposure.total;
let exposed_validator = initial_exposure.own;
let exposed_nominator = initial_exposure.others.first().unwrap().value;
// 11 goes offline
on_offence_now(
&[OffenceDetails { offender: (11, initial_exposure.clone()), reporters: vec![] }],
&[slash_percent],
);
// both stakes must have been decreased.
assert!(Staking::ledger(101.into()).unwrap().active < nominator_stake);
assert!(Staking::ledger(11.into()).unwrap().active < validator_stake);
let slash_amount = slash_percent * exposed_stake;
let validator_share =
Perbill::from_rational(exposed_validator, exposed_stake) * slash_amount;
let nominator_share =
Perbill::from_rational(exposed_nominator, exposed_stake) * slash_amount;
// both slash amounts need to be positive for the test to make sense.
assert!(validator_share > 0);
assert!(nominator_share > 0);
// both stakes must have been decreased pro-rata.
assert_eq!(Staking::ledger(101.into()).unwrap().active, nominator_stake - nominator_share);
assert_eq!(Staking::ledger(11.into()).unwrap().active, validator_stake - validator_share);
assert_eq!(
balances(&101).0, // free balance
nominator_balance - nominator_share,
);
assert_eq!(
balances(&11).0, // free balance
validator_balance - validator_share,
);
// Because slashing happened.
assert!(is_disabled(11));
});
}
#[test]
fn double_staking_should_fail() {
// should test (in the same order):
// * an account already bonded as stash cannot be be stashed again.
// * an account already bonded as stash cannot nominate.
// * an account already bonded as controller can nominate.
ExtBuilder::default().build_and_execute(|| {
let arbitrary_value = 5;
let (stash, controller) = testing_utils::create_unique_stash_controller::<Test>(
0,
arbitrary_value,
RewardDestination::default(),
false,
)
.unwrap();
// 4 = not used so far, stash => not allowed.
assert_noop!(
Staking::bond(
RuntimeOrigin::signed(stash),
arbitrary_value.into(),
RewardDestination::default()
),
Error::<Test>::AlreadyBonded,
);
// stash => attempting to nominate should fail.
assert_noop!(
Staking::nominate(RuntimeOrigin::signed(stash), vec![1]),
Error::<Test>::NotController
);
// controller => nominating should work.
assert_ok!(Staking::nominate(RuntimeOrigin::signed(controller), vec![1]));
});
}
#[test]
fn double_controlling_attempt_should_fail() {
// should test (in the same order):
// * an account already bonded as controller CANNOT be reused as the controller of another
// account.
ExtBuilder::default().build_and_execute(|| {
let arbitrary_value = 5;
let (stash, _) = testing_utils::create_unique_stash_controller::<Test>(
0,
arbitrary_value,
RewardDestination::default(),
false,
)
.unwrap();
// Note that controller (same as stash) is reused => no-op.
assert_noop!(
Staking::bond(
RuntimeOrigin::signed(stash),
arbitrary_value.into(),
RewardDestination::default()
),
Error::<Test>::AlreadyBonded,
);
});
}
#[test]
fn session_and_eras_work_simple() {
ExtBuilder::default().period(1).build_and_execute(|| {
assert_eq!(active_era(), 0);
assert_eq!(current_era(), 0);
assert_eq!(Session::current_index(), 1);
assert_eq!(System::block_number(), 1);
// Session 1: this is basically a noop. This has already been started.
start_session(1);
assert_eq!(Session::current_index(), 1);
assert_eq!(active_era(), 0);
assert_eq!(System::block_number(), 1);
// Session 2: No change.
start_session(2);
assert_eq!(Session::current_index(), 2);
assert_eq!(active_era(), 0);
assert_eq!(System::block_number(), 2);
// Session 3: Era increment.
start_session(3);
assert_eq!(Session::current_index(), 3);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 3);
// Session 4: No change.
start_session(4);
assert_eq!(Session::current_index(), 4);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 4);
// Session 5: No change.
start_session(5);
assert_eq!(Session::current_index(), 5);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 5);
// Session 6: Era increment.
start_session(6);
assert_eq!(Session::current_index(), 6);
assert_eq!(active_era(), 2);
assert_eq!(System::block_number(), 6);
});
}
#[test]
fn session_and_eras_work_complex() {
ExtBuilder::default().period(5).build_and_execute(|| {
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 0);
assert_eq!(System::block_number(), 1);
start_session(1);
assert_eq!(Session::current_index(), 1);
assert_eq!(active_era(), 0);
assert_eq!(System::block_number(), 5);
start_session(2);
assert_eq!(Session::current_index(), 2);
assert_eq!(active_era(), 0);
assert_eq!(System::block_number(), 10);
start_session(3);
assert_eq!(Session::current_index(), 3);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 15);
start_session(4);
assert_eq!(Session::current_index(), 4);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 20);
start_session(5);
assert_eq!(Session::current_index(), 5);
assert_eq!(active_era(), 1);
assert_eq!(System::block_number(), 25);
start_session(6);
assert_eq!(Session::current_index(), 6);
assert_eq!(active_era(), 2);
assert_eq!(System::block_number(), 30);
});
}
#[test]
fn forcing_new_era_works() {
ExtBuilder::default().build_and_execute(|| {
// normal flow of session.
start_session(1);
assert_eq!(active_era(), 0);
start_session(2);
assert_eq!(active_era(), 0);
start_session(3);
assert_eq!(active_era(), 1);
// no era change.
Staking::set_force_era(Forcing::ForceNone);
start_session(4);
assert_eq!(active_era(), 1);
start_session(5);
assert_eq!(active_era(), 1);
start_session(6);
assert_eq!(active_era(), 1);
start_session(7);
assert_eq!(active_era(), 1);
// back to normal.
// this immediately starts a new session.
Staking::set_force_era(Forcing::NotForcing);
start_session(8);
assert_eq!(active_era(), 1);
start_session(9);
assert_eq!(active_era(), 2);
// forceful change
Staking::set_force_era(Forcing::ForceAlways);
start_session(10);
assert_eq!(active_era(), 2);
start_session(11);
assert_eq!(active_era(), 3);
start_session(12);
assert_eq!(active_era(), 4);
// just one forceful change
Staking::set_force_era(Forcing::ForceNew);
start_session(13);
assert_eq!(active_era(), 5);
assert_eq!(ForceEra::<Test>::get(), Forcing::NotForcing);
start_session(14);
assert_eq!(active_era(), 6);
start_session(15);
assert_eq!(active_era(), 6);
});
}
#[test]
fn cannot_transfer_staked_balance() {
// Tests that a stash account cannot transfer funds
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Confirm account 11 is stashed
assert_eq!(Staking::bonded(&11), Some(11));
// Confirm account 11 has some free balance
assert_eq!(Balances::free_balance(11), 1000);
// Confirm account 11 (via controller) is totally staked
assert_eq!(Staking::eras_stakers(active_era(), &11).total, 1000);
// Confirm account 11 cannot transfer as a result
assert_noop!(
Balances::transfer_allow_death(RuntimeOrigin::signed(11), 21, 1),
TokenError::Frozen,
);
// Give account 11 extra free balance
let _ = Balances::make_free_balance_be(&11, 10000);
// Confirm that account 11 can now transfer some balance
assert_ok!(Balances::transfer_allow_death(RuntimeOrigin::signed(11), 21, 1));
});
}
#[test]
fn cannot_transfer_staked_balance_2() {
// Tests that a stash account cannot transfer funds
// Same test as above but with 20, and more accurate.
// 21 has 2000 free balance but 1000 at stake
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Confirm account 21 is stashed
assert_eq!(Staking::bonded(&21), Some(21));
// Confirm account 21 has some free balance
assert_eq!(Balances::free_balance(21), 2000);
// Confirm account 21 (via controller) is totally staked
assert_eq!(Staking::eras_stakers(active_era(), &21).total, 1000);
// Confirm account 21 can transfer at most 1000
assert_noop!(
Balances::transfer_allow_death(RuntimeOrigin::signed(21), 21, 1001),
TokenError::Frozen,
);
assert_ok!(Balances::transfer_allow_death(RuntimeOrigin::signed(21), 21, 1000));
});
}
#[test]
fn cannot_reserve_staked_balance() {
// Checks that a bonded account cannot reserve balance from free balance
ExtBuilder::default().build_and_execute(|| {
// Confirm account 11 is stashed
assert_eq!(Staking::bonded(&11), Some(11));
// Confirm account 11 has some free balance
assert_eq!(Balances::free_balance(11), 1000);
// Confirm account 11 (via controller 10) is totally staked
assert_eq!(Staking::eras_stakers(active_era(), &11).own, 1000);
// Confirm account 11 cannot reserve as a result
assert_noop!(Balances::reserve(&11, 1), BalancesError::<Test, _>::LiquidityRestrictions);
// Give account 11 extra free balance
let _ = Balances::make_free_balance_be(&11, 10000);
// Confirm account 11 can now reserve balance
assert_ok!(Balances::reserve(&11, 1));
});
}
#[test]
fn reward_destination_works() {
// Rewards go to the correct destination as determined in Payee
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Check that account 11 is a validator
assert!(Session::validators().contains(&11));
// Check the balance of the validator account
assert_eq!(Balances::free_balance(10), 1);
// Check the balance of the stash account
assert_eq!(Balances::free_balance(11), 1000);
// Check how much is at stake
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(1);
mock::make_all_reward_payment(0);
// Check that RewardDestination is Staked (default)
assert_eq!(Staking::payee(11.into()), RewardDestination::Staked);
// Check that reward went to the stash account of validator
assert_eq!(Balances::free_balance(11), 1000 + total_payout_0);
// Check that amount at stake increased accordingly
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + total_payout_0,
active: 1000 + total_payout_0,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// (era 0, page 0) is claimed
assert_eq!(Staking::claimed_rewards(0, &11), vec![0]);
// Change RewardDestination to Stash
<Payee<Test>>::insert(&11, RewardDestination::Stash);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(2);
mock::make_all_reward_payment(1);
// Check that RewardDestination is Stash
assert_eq!(Staking::payee(11.into()), RewardDestination::Stash);
// Check that reward went to the stash account
assert_eq!(Balances::free_balance(11), 1000 + total_payout_0 + total_payout_1);
// Record this value
let recorded_stash_balance = 1000 + total_payout_0 + total_payout_1;
// Check that amount at stake is NOT increased
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + total_payout_0,
active: 1000 + total_payout_0,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// (era 1, page 0) is claimed
assert_eq!(Staking::claimed_rewards(1, &11), vec![0]);
// Change RewardDestination to Account
<Payee<Test>>::insert(&11, RewardDestination::Account(11));
// Check controller balance
assert_eq!(Balances::free_balance(11), 23150);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_2 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(3);
mock::make_all_reward_payment(2);
// Check that RewardDestination is Account(11)
assert_eq!(Staking::payee(11.into()), RewardDestination::Account(11));
// Check that reward went to the controller account
assert_eq!(Balances::free_balance(11), recorded_stash_balance + total_payout_2);
// Check that amount at stake is NOT increased
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + total_payout_0,
active: 1000 + total_payout_0,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// (era 2, page 0) is claimed
assert_eq!(Staking::claimed_rewards(2, &11), vec![0]);
});
}
#[test]
fn validator_payment_prefs_work() {
// Test that validator preferences are correctly honored
// Note: unstake threshold is being directly tested in slashing tests.
// This test will focus on validator payment.
ExtBuilder::default().build_and_execute(|| {
let commission = Perbill::from_percent(40);
<Validators<Test>>::insert(&11, ValidatorPrefs { commission, ..Default::default() });
// Reward stash so staked ratio doesn't change.
<Payee<Test>>::insert(&11, RewardDestination::Stash);
<Payee<Test>>::insert(&101, RewardDestination::Stash);
mock::start_active_era(1);
mock::make_all_reward_payment(0);
let balance_era_1_11 = Balances::total_balance(&11);
let balance_era_1_101 = Balances::total_balance(&101);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
let exposure_1 = Staking::eras_stakers(active_era(), &11);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(2);
mock::make_all_reward_payment(1);
let taken_cut = commission * total_payout_1;
let shared_cut = total_payout_1 - taken_cut;
let reward_of_10 = shared_cut * exposure_1.own / exposure_1.total + taken_cut;
let reward_of_100 = shared_cut * exposure_1.others[0].value / exposure_1.total;
assert_eq_error_rate!(Balances::total_balance(&11), balance_era_1_11 + reward_of_10, 2);
assert_eq_error_rate!(Balances::total_balance(&101), balance_era_1_101 + reward_of_100, 2);
});
}
#[test]
fn bond_extra_works() {
// Tests that extra `free_balance` in the stash can be added to stake
// NOTE: this tests only verifies `StakingLedger` for correct updates
// See `bond_extra_and_withdraw_unbonded_works` for more details and updates on `Exposure`.
ExtBuilder::default().build_and_execute(|| {
// Check that account 10 is a validator
assert!(<Validators<Test>>::contains_key(11));
// Check that account 10 is bonded to account 11
assert_eq!(Staking::bonded(&11), Some(11));
// Check how much is at stake
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Give account 11 some large free balance greater than total
let _ = Balances::make_free_balance_be(&11, 1000000);
// Call the bond_extra function from controller, add only 100
assert_ok!(Staking::bond_extra(RuntimeOrigin::signed(11), 100));
// There should be 100 more `total` and `active` in the ledger
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 1000 + 100,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Call the bond_extra function with a large number, should handle it
assert_ok!(Staking::bond_extra(RuntimeOrigin::signed(11), Balance::max_value()));
// The full amount of the funds should now be in the total and active
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000000,
active: 1000000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
});
}
#[test]
fn bond_extra_and_withdraw_unbonded_works() {
//
// * Should test
// * Given an account being bonded [and chosen as a validator](not mandatory)
// * It can add extra funds to the bonded account.
// * it can unbond a portion of its funds from the stash account.
// * Once the unbonding period is done, it can actually take the funds out of the stash.
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Set payee to stash.
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
// Give account 11 some large free balance greater than total
let _ = Balances::make_free_balance_be(&11, 1000000);
// Initial config should be correct
assert_eq!(active_era(), 0);
// check the balance of a validator accounts.
assert_eq!(Balances::total_balance(&11), 1000000);
// confirm that 10 is a normal validator and gets paid at the end of the era.
mock::start_active_era(1);
// Initial state of 11
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
assert_eq!(
Staking::eras_stakers(active_era(), &11),
Exposure { total: 1000, own: 1000, others: vec![] }
);
// deposit the extra 100 units
Staking::bond_extra(RuntimeOrigin::signed(11), 100).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 1000 + 100,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Exposure is a snapshot! only updated after the next era update.
assert_ne!(
Staking::eras_stakers(active_era(), &11),
Exposure { total: 1000 + 100, own: 1000 + 100, others: vec![] }
);
// trigger next era.
mock::start_active_era(2);
assert_eq!(active_era(), 2);
// ledger should be the same.
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 1000 + 100,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Exposure is now updated.
assert_eq!(
Staking::eras_stakers(active_era(), &11),
Exposure { total: 1000 + 100, own: 1000 + 100, others: vec![] }
);
// Unbond almost all of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 1000).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 1000, era: 2 + 3 }],
legacy_claimed_rewards: bounded_vec![],
},
);
// Attempting to free the balances now will fail. 2 eras need to pass.
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(11), 0));
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 1000, era: 2 + 3 }],
legacy_claimed_rewards: bounded_vec![],
},
);
// trigger next era.
mock::start_active_era(3);
// nothing yet
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(11), 0));
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000 + 100,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 1000, era: 2 + 3 }],
legacy_claimed_rewards: bounded_vec![],
},
);
// trigger next era.
mock::start_active_era(5);
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(11), 0));
// Now the value is free and the staking ledger is updated.
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 100,
active: 100,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
},
);
})
}
#[test]
fn many_unbond_calls_should_work() {
ExtBuilder::default().build_and_execute(|| {
let mut current_era = 0;
// locked at era MaxUnlockingChunks - 1 until 3
let max_unlocking_chunks = <<Test as Config>::MaxUnlockingChunks as Get<u32>>::get();
for i in 0..max_unlocking_chunks - 1 {
// There is only 1 chunk per era, so we need to be in a new era to create a chunk.
current_era = i as u32;
mock::start_active_era(current_era);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1));
}
current_era += 1;
mock::start_active_era(current_era);
// This chunk is locked at `current_era` through `current_era + 2` (because
// `BondingDuration` == 3).
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1));
assert_eq!(
Staking::ledger(11.into()).map(|l| l.unlocking.len()).unwrap(),
<<Test as Config>::MaxUnlockingChunks as Get<u32>>::get() as usize
);
// even though the number of unlocked chunks is the same as `MaxUnlockingChunks`,
// unbonding works as expected.
for i in current_era..(current_era + max_unlocking_chunks) - 1 {
// There is only 1 chunk per era, so we need to be in a new era to create a chunk.
current_era = i as u32;
mock::start_active_era(current_era);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1));
}
// only slots within last `BondingDuration` are filled.
assert_eq!(
Staking::ledger(11.into()).map(|l| l.unlocking.len()).unwrap(),
<<Test as Config>::BondingDuration>::get() as usize
);
})
}
#[test]
fn auto_withdraw_may_not_unlock_all_chunks() {
ExtBuilder::default().build_and_execute(|| {
// set `MaxUnlockingChunks` to a low number to test case when the unbonding period
// is larger than the number of unlocking chunks available, which may result on a
// `Error::NoMoreChunks`, even when the auto-withdraw tries to release locked chunks.
MaxUnlockingChunks::set(1);
let mut current_era = 0;
// fills the chunking slots for account
mock::start_active_era(current_era);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1));
current_era += 1;
mock::start_active_era(current_era);
// unbonding will fail because i) there are no remaining chunks and ii) no filled chunks
// can be released because current chunk hasn't stay in the queue for at least
// `BondingDuration`
assert_noop!(Staking::unbond(RuntimeOrigin::signed(11), 1), Error::<Test>::NoMoreChunks);
// fast-forward a few eras for unbond to be successful with implicit withdraw
current_era += 10;
mock::start_active_era(current_era);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1));
})
}
#[test]
fn rebond_works() {
//
// * Should test
// * Given an account being bonded [and chosen as a validator](not mandatory)
// * it can unbond a portion of its funds from the stash account.
// * it can re-bond a portion of the funds scheduled to unlock.
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Set payee to stash.
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
// Give account 11 some large free balance greater than total
let _ = Balances::make_free_balance_be(&11, 1000000);
// confirm that 10 is a normal validator and gets paid at the end of the era.
mock::start_active_era(1);
// Initial state of 11
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(2);
assert_eq!(active_era(), 2);
// Try to rebond some funds. We get an error since no fund is unbonded.
assert_noop!(Staking::rebond(RuntimeOrigin::signed(11), 500), Error::<Test>::NoUnlockChunk);
// Unbond almost all of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 900).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 900, era: 2 + 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond all the funds unbonded.
Staking::rebond(RuntimeOrigin::signed(11), 900).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Unbond almost all of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 900).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 900, era: 5 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond part of the funds unbonded.
Staking::rebond(RuntimeOrigin::signed(11), 500).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 600,
unlocking: bounded_vec![UnlockChunk { value: 400, era: 5 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond the remainder of the funds unbonded.
Staking::rebond(RuntimeOrigin::signed(11), 500).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Unbond parts of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 300).unwrap();
Staking::unbond(RuntimeOrigin::signed(11), 300).unwrap();
Staking::unbond(RuntimeOrigin::signed(11), 300).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 900, era: 5 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond part of the funds unbonded.
Staking::rebond(RuntimeOrigin::signed(11), 500).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 600,
unlocking: bounded_vec![UnlockChunk { value: 400, era: 5 }],
legacy_claimed_rewards: bounded_vec![],
}
);
})
}
#[test]
fn rebond_is_fifo() {
// Rebond should proceed by reversing the most recent bond operations.
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Set payee to stash.
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
// Give account 11 some large free balance greater than total
let _ = Balances::make_free_balance_be(&11, 1000000);
// confirm that 10 is a normal validator and gets paid at the end of the era.
mock::start_active_era(1);
// Initial state of 10
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(2);
// Unbond some of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 400).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 600,
unlocking: bounded_vec![UnlockChunk { value: 400, era: 2 + 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(3);
// Unbond more of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 300).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 300,
unlocking: bounded_vec![
UnlockChunk { value: 400, era: 2 + 3 },
UnlockChunk { value: 300, era: 3 + 3 },
],
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(4);
// Unbond yet more of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 200).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 100,
unlocking: bounded_vec![
UnlockChunk { value: 400, era: 2 + 3 },
UnlockChunk { value: 300, era: 3 + 3 },
UnlockChunk { value: 200, era: 4 + 3 },
],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond half of the unbonding funds.
Staking::rebond(RuntimeOrigin::signed(11), 400).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 500,
unlocking: bounded_vec![
UnlockChunk { value: 400, era: 2 + 3 },
UnlockChunk { value: 100, era: 3 + 3 },
],
legacy_claimed_rewards: bounded_vec![],
}
);
})
}
#[test]
fn rebond_emits_right_value_in_event() {
// When a user calls rebond with more than can be rebonded, things succeed,
// and the rebond event emits the actual value rebonded.
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Set payee to stash.
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
// Give account 11 some large free balance greater than total
let _ = Balances::make_free_balance_be(&11, 1000000);
// confirm that 10 is a normal validator and gets paid at the end of the era.
mock::start_active_era(1);
// Unbond almost all of the funds in stash.
Staking::unbond(RuntimeOrigin::signed(11), 900).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 100,
unlocking: bounded_vec![UnlockChunk { value: 900, era: 1 + 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Re-bond less than the total
Staking::rebond(RuntimeOrigin::signed(11), 100).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 200,
unlocking: bounded_vec![UnlockChunk { value: 800, era: 1 + 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// Event emitted should be correct
assert_eq!(*staking_events().last().unwrap(), Event::Bonded { stash: 11, amount: 100 });
// Re-bond way more than available
Staking::rebond(RuntimeOrigin::signed(11), 100_000).unwrap();
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// Event emitted should be correct, only 800
assert_eq!(*staking_events().last().unwrap(), Event::Bonded { stash: 11, amount: 800 });
});
}
#[test]
fn reward_to_stake_works() {
ExtBuilder::default()
.nominate(false)
.set_status(31, StakerStatus::Idle)
.set_status(41, StakerStatus::Idle)
.set_stake(21, 2000)
.build_and_execute(|| {
assert_eq!(Staking::validator_count(), 2);
// Confirm account 10 and 20 are validators
assert!(<Validators<Test>>::contains_key(&11) && <Validators<Test>>::contains_key(&21));
assert_eq!(Staking::eras_stakers(active_era(), &11).total, 1000);
assert_eq!(Staking::eras_stakers(active_era(), &21).total, 2000);
// Give the man some money.
let _ = Balances::make_free_balance_be(&10, 1000);
let _ = Balances::make_free_balance_be(&20, 1000);
// Bypass logic and change current exposure
EraInfo::<Test>::set_exposure(0, &21, Exposure { total: 69, own: 69, others: vec![] });
<Ledger<Test>>::insert(
&20,
StakingLedgerInspect {
stash: 21,
total: 69,
active: 69,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
},
);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
Pallet::<Test>::reward_by_ids(vec![(21, 1)]);
// New era --> rewards are paid --> stakes are changed
mock::start_active_era(1);
mock::make_all_reward_payment(0);
assert_eq!(Staking::eras_stakers(active_era(), &11).total, 1000);
assert_eq!(Staking::eras_stakers(active_era(), &21).total, 2000);
let _11_balance = Balances::free_balance(&11);
assert_eq!(_11_balance, 1000 + total_payout_0 / 2);
// Trigger another new era as the info are frozen before the era start.
mock::start_active_era(2);
// -- new infos
assert_eq!(Staking::eras_stakers(active_era(), &11).total, 1000 + total_payout_0 / 2);
assert_eq!(Staking::eras_stakers(active_era(), &21).total, 2000 + total_payout_0 / 2);
});
}
#[test]
fn reap_stash_works() {
ExtBuilder::default()
.existential_deposit(10)
.balance_factor(10)
.build_and_execute(|| {
// given
assert_eq!(Balances::free_balance(11), 10 * 1000);
assert_eq!(Staking::bonded(&11), Some(11));
assert!(<Ledger<Test>>::contains_key(&11));
assert!(<Bonded<Test>>::contains_key(&11));
assert!(<Validators<Test>>::contains_key(&11));
assert!(<Payee<Test>>::contains_key(&11));
// stash is not reapable
assert_noop!(
Staking::reap_stash(RuntimeOrigin::signed(20), 11, 0),
Error::<Test>::FundedTarget
);
// no easy way to cause an account to go below ED, we tweak their staking ledger
// instead.
Ledger::<Test>::insert(11, StakingLedger::<Test>::new(11, 5));
// reap-able
assert_ok!(Staking::reap_stash(RuntimeOrigin::signed(20), 11, 0));
// then
assert!(!<Ledger<Test>>::contains_key(&11));
assert!(!<Bonded<Test>>::contains_key(&11));
assert!(!<Validators<Test>>::contains_key(&11));
assert!(!<Payee<Test>>::contains_key(&11));
});
}
#[test]
fn switching_roles() {
// Test that it should be possible to switch between roles (nominator, validator, idle) with
// minimal overhead.
ExtBuilder::default().nominate(false).build_and_execute(|| {
// Reset reward destination
for i in &[11, 21] {
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(*i), RewardDestination::Stash));
}
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// put some money in account that we'll use.
for i in 1..7 {
let _ = Balances::deposit_creating(&i, 5000);
}
// add 2 nominators
assert_ok!(Staking::bond(RuntimeOrigin::signed(1), 2000, RewardDestination::Account(1)));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(1), vec![11, 5]));
assert_ok!(Staking::bond(RuntimeOrigin::signed(3), 500, RewardDestination::Account(3)));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![21, 1]));
// add a new validator candidate
assert_ok!(Staking::bond(RuntimeOrigin::signed(5), 1000, RewardDestination::Account(5)));
assert_ok!(Staking::validate(RuntimeOrigin::signed(5), ValidatorPrefs::default()));
assert_ok!(Session::set_keys(
RuntimeOrigin::signed(5),
SessionKeys { other: 6.into() },
vec![]
));
mock::start_active_era(1);
// with current nominators 11 and 5 have the most stake
assert_eq_uvec!(validator_controllers(), vec![5, 11]);
// 2 decides to be a validator. Consequences:
assert_ok!(Staking::validate(RuntimeOrigin::signed(1), ValidatorPrefs::default()));
assert_ok!(Session::set_keys(
RuntimeOrigin::signed(1),
SessionKeys { other: 2.into() },
vec![]
));
// new stakes:
// 11: 1000 self vote
// 21: 1000 self vote + 250 vote
// 5 : 1000 self vote
// 1 : 2000 self vote + 250 vote.
// Winners: 21 and 1
mock::start_active_era(2);
assert_eq_uvec!(validator_controllers(), vec![1, 21]);
});
}
#[test]
fn wrong_vote_is_moot() {
ExtBuilder::default()
.add_staker(
61,
61,
500,
StakerStatus::Nominator(vec![
11, 21, // good votes
1, 2, 15, 1000, 25, // crap votes. No effect.
]),
)
.build_and_execute(|| {
// the genesis validators already reflect the above vote, nonetheless start a new era.
mock::start_active_era(1);
// new validators
assert_eq_uvec!(validator_controllers(), vec![21, 11]);
// our new voter is taken into account
assert!(Staking::eras_stakers(active_era(), &11).others.iter().any(|i| i.who == 61));
assert!(Staking::eras_stakers(active_era(), &21).others.iter().any(|i| i.who == 61));
});
}
#[test]
fn bond_with_no_staked_value() {
// Behavior when someone bonds with no staked value.
// Particularly when they votes and the candidate is elected.
ExtBuilder::default()
.validator_count(3)
.existential_deposit(5)
.balance_factor(5)
.nominate(false)
.minimum_validator_count(1)
.build_and_execute(|| {
// Can't bond with 1
assert_noop!(
Staking::bond(RuntimeOrigin::signed(1), 1, RewardDestination::Account(1)),
Error::<Test>::InsufficientBond,
);
// bonded with absolute minimum value possible.
assert_ok!(Staking::bond(RuntimeOrigin::signed(1), 5, RewardDestination::Account(1)));
assert_eq!(Balances::locks(&1)[0].amount, 5);
// unbonding even 1 will cause all to be unbonded.
assert_ok!(Staking::unbond(RuntimeOrigin::signed(1), 1));
assert_eq!(
Staking::ledger(1.into()).unwrap(),
StakingLedgerInspect {
stash: 1,
active: 0,
total: 5,
unlocking: bounded_vec![UnlockChunk { value: 5, era: 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(1);
mock::start_active_era(2);
// not yet removed.
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(1), 0));
assert!(Staking::ledger(1.into()).is_ok());
assert_eq!(Balances::locks(&1)[0].amount, 5);
mock::start_active_era(3);
// poof. Account 1 is removed from the staking system.
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(1), 0));
assert!(Staking::ledger(1.into()).is_err());
assert_eq!(Balances::locks(&1).len(), 0);
});
}
#[test]
fn bond_with_little_staked_value_bounded() {
ExtBuilder::default()
.validator_count(3)
.nominate(false)
.minimum_validator_count(1)
.build_and_execute(|| {
// setup
assert_ok!(Staking::chill(RuntimeOrigin::signed(31)));
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Stash));
let init_balance_1 = Balances::free_balance(&1);
let init_balance_11 = Balances::free_balance(&11);
// Stingy validator.
assert_ok!(Staking::bond(RuntimeOrigin::signed(1), 1, RewardDestination::Account(1)));
assert_ok!(Staking::validate(RuntimeOrigin::signed(1), ValidatorPrefs::default()));
assert_ok!(Session::set_keys(
RuntimeOrigin::signed(1),
SessionKeys { other: 1.into() },
vec![]
));
// 1 era worth of reward. BUT, we set the timestamp after on_initialize, so outdated by
// one block.
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
reward_all_elected();
mock::start_active_era(1);
mock::make_all_reward_payment(0);
// 1 is elected.
assert_eq_uvec!(validator_controllers(), vec![21, 11, 1]);
assert_eq!(Staking::eras_stakers(active_era(), &2).total, 0);
// Old ones are rewarded.
assert_eq_error_rate!(
Balances::free_balance(11),
init_balance_11 + total_payout_0 / 3,
1
);
// no rewards paid to 2. This was initial election.
assert_eq!(Balances::free_balance(1), init_balance_1);
// reward era 2
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
reward_all_elected();
mock::start_active_era(2);
mock::make_all_reward_payment(1);
assert_eq_uvec!(validator_controllers(), vec![21, 11, 1]);
assert_eq!(Staking::eras_stakers(active_era(), &2).total, 0);
// 2 is now rewarded.
assert_eq_error_rate!(
Balances::free_balance(1),
init_balance_1 + total_payout_1 / 3,
1
);
assert_eq_error_rate!(
Balances::free_balance(&11),
init_balance_11 + total_payout_0 / 3 + total_payout_1 / 3,
2,
);
});
}
#[test]
fn bond_with_duplicate_vote_should_be_ignored_by_election_provider() {
ExtBuilder::default()
.validator_count(2)
.nominate(false)
.minimum_validator_count(1)
.set_stake(31, 1000)
.build_and_execute(|| {
// ensure all have equal stake.
assert_eq!(
<Validators<Test>>::iter()
.map(|(v, _)| (v, Staking::ledger(v.into()).unwrap().total))
.collect::<Vec<_>>(),
vec![(31, 1000), (21, 1000), (11, 1000)],
);
// no nominators shall exist.
assert!(<Nominators<Test>>::iter().map(|(n, _)| n).collect::<Vec<_>>().is_empty());
// give the man some money.
let initial_balance = 1000;
for i in [1, 2, 3, 4].iter() {
let _ = Balances::make_free_balance_be(i, initial_balance);
}
assert_ok!(Staking::bond(
RuntimeOrigin::signed(1),
1000,
RewardDestination::Account(1)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(1), vec![11, 11, 11, 21, 31]));
assert_ok!(Staking::bond(
RuntimeOrigin::signed(3),
1000,
RewardDestination::Account(3)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![21, 31]));
// winners should be 21 and 31. Otherwise this election is taking duplicates into
// account.
let supports = <Test as Config>::ElectionProvider::elect().unwrap();
assert_eq!(
supports,
vec![
(21, Support { total: 1800, voters: vec![(21, 1000), (1, 400), (3, 400)] }),
(31, Support { total: 2200, voters: vec![(31, 1000), (1, 600), (3, 600)] })
],
);
});
}
#[test]
fn bond_with_duplicate_vote_should_be_ignored_by_election_provider_elected() {
// same as above but ensures that even when the dupe is being elected, everything is sane.
ExtBuilder::default()
.validator_count(2)
.nominate(false)
.set_stake(31, 1000)
.minimum_validator_count(1)
.build_and_execute(|| {
// ensure all have equal stake.
assert_eq!(
<Validators<Test>>::iter()
.map(|(v, _)| (v, Staking::ledger(v.into()).unwrap().total))
.collect::<Vec<_>>(),
vec![(31, 1000), (21, 1000), (11, 1000)],
);
// no nominators shall exist.
assert!(<Nominators<Test>>::iter().collect::<Vec<_>>().is_empty());
// give the man some money.
let initial_balance = 1000;
for i in [1, 2, 3, 4].iter() {
let _ = Balances::make_free_balance_be(i, initial_balance);
}
assert_ok!(Staking::bond(
RuntimeOrigin::signed(1),
1000,
RewardDestination::Account(1)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(1), vec![11, 11, 11, 21]));
assert_ok!(Staking::bond(
RuntimeOrigin::signed(3),
1000,
RewardDestination::Account(3)
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![21]));
// winners should be 21 and 11.
let supports = <Test as Config>::ElectionProvider::elect().unwrap();
assert_eq!(
supports,
vec![
(11, Support { total: 1500, voters: vec![(11, 1000), (1, 500)] }),
(21, Support { total: 2500, voters: vec![(21, 1000), (1, 500), (3, 1000)] })
],
);
});
}
#[test]
fn new_era_elects_correct_number_of_validators() {
ExtBuilder::default().nominate(true).validator_count(1).build_and_execute(|| {
assert_eq!(Staking::validator_count(), 1);
assert_eq!(validator_controllers().len(), 1);
Session::on_initialize(System::block_number());
assert_eq!(validator_controllers().len(), 1);
})
}
#[test]
fn phragmen_should_not_overflow() {
ExtBuilder::default().nominate(false).build_and_execute(|| {
// This is the maximum value that we can have as the outcome of CurrencyToVote.
type Votes = u64;
let _ = Staking::chill(RuntimeOrigin::signed(10));
let _ = Staking::chill(RuntimeOrigin::signed(20));
bond_validator(3, Votes::max_value() as Balance);
bond_validator(5, Votes::max_value() as Balance);
bond_nominator(7, Votes::max_value() as Balance, vec![3, 5]);
bond_nominator(9, Votes::max_value() as Balance, vec![3, 5]);
mock::start_active_era(1);
assert_eq_uvec!(validator_controllers(), vec![3, 5]);
// We can safely convert back to values within [u64, u128].
assert!(Staking::eras_stakers(active_era(), &3).total > Votes::max_value() as Balance);
assert!(Staking::eras_stakers(active_era(), &5).total > Votes::max_value() as Balance);
})
}
#[test]
fn reward_validator_slashing_validator_does_not_overflow() {
ExtBuilder::default().build_and_execute(|| {
let stake = u64::MAX as Balance * 2;
let reward_slash = u64::MAX as Balance * 2;
// Assert multiplication overflows in balance arithmetic.
assert!(stake.checked_mul(reward_slash).is_none());
// Set staker
let _ = Balances::make_free_balance_be(&11, stake);
let exposure = Exposure::<AccountId, Balance> { total: stake, own: stake, others: vec![] };
let reward = EraRewardPoints::<AccountId> {
total: 1,
individual: vec![(11, 1)].into_iter().collect(),
};
// Check reward
ErasRewardPoints::<Test>::insert(0, reward);
EraInfo::<Test>::set_exposure(0, &11, exposure);
ErasValidatorReward::<Test>::insert(0, stake);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 0, 0));
assert_eq!(Balances::total_balance(&11), stake * 2);
// Set staker
let _ = Balances::make_free_balance_be(&11, stake);
let _ = Balances::make_free_balance_be(&2, stake);
// only slashes out of bonded stake are applied. without this line, it is 0.
Staking::bond(RuntimeOrigin::signed(2), stake - 1, RewardDestination::default()).unwrap();
// Override exposure of 11
EraInfo::<Test>::set_exposure(
0,
&11,
Exposure {
total: stake,
own: 1,
others: vec![IndividualExposure { who: 2, value: stake - 1 }],
},
);
// Check slashing
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(100)],
);
assert_eq!(Balances::total_balance(&11), stake - 1);
assert_eq!(Balances::total_balance(&2), 1);
})
}
#[test]
fn reward_from_authorship_event_handler_works() {
ExtBuilder::default().build_and_execute(|| {
use pallet_authorship::EventHandler;
assert_eq!(<pallet_authorship::Pallet<Test>>::author(), Some(11));
Pallet::<Test>::note_author(11);
Pallet::<Test>::note_author(11);
// Not mandatory but must be coherent with rewards
assert_eq_uvec!(Session::validators(), vec![11, 21]);
// 21 is rewarded as an uncle producer
// 11 is rewarded as a block producer and uncle referencer and uncle producer
assert_eq!(
ErasRewardPoints::<Test>::get(active_era()),
EraRewardPoints { individual: vec![(11, 20 * 2)].into_iter().collect(), total: 40 },
);
})
}
#[test]
fn add_reward_points_fns_works() {
ExtBuilder::default().build_and_execute(|| {
// Not mandatory but must be coherent with rewards
assert_eq_uvec!(Session::validators(), vec![21, 11]);
Pallet::<Test>::reward_by_ids(vec![(21, 1), (11, 1), (11, 1)]);
Pallet::<Test>::reward_by_ids(vec![(21, 1), (11, 1), (11, 1)]);
assert_eq!(
ErasRewardPoints::<Test>::get(active_era()),
EraRewardPoints { individual: vec![(11, 4), (21, 2)].into_iter().collect(), total: 6 },
);
})
}
#[test]
fn unbonded_balance_is_not_slashable() {
ExtBuilder::default().build_and_execute(|| {
// total amount staked is slashable.
assert_eq!(Staking::slashable_balance_of(&11), 1000);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 800));
// only the active portion.
assert_eq!(Staking::slashable_balance_of(&11), 200);
})
}
#[test]
fn era_is_always_same_length() {
// This ensures that the sessions is always of the same length if there is no forcing no
// session changes.
ExtBuilder::default().build_and_execute(|| {
let session_per_era = <SessionsPerEra as Get<SessionIndex>>::get();
mock::start_active_era(1);
assert_eq!(Staking::eras_start_session_index(current_era()).unwrap(), session_per_era);
mock::start_active_era(2);
assert_eq!(
Staking::eras_start_session_index(current_era()).unwrap(),
session_per_era * 2u32
);
let session = Session::current_index();
Staking::set_force_era(Forcing::ForceNew);
advance_session();
advance_session();
assert_eq!(current_era(), 3);
assert_eq!(Staking::eras_start_session_index(current_era()).unwrap(), session + 2);
mock::start_active_era(4);
assert_eq!(
Staking::eras_start_session_index(current_era()).unwrap(),
session + 2u32 + session_per_era
);
});
}
#[test]
fn offence_forces_new_era() {
ExtBuilder::default().build_and_execute(|| {
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(5)],
);
assert_eq!(Staking::force_era(), Forcing::ForceNew);
});
}
#[test]
fn offence_ensures_new_era_without_clobbering() {
ExtBuilder::default().build_and_execute(|| {
assert_ok!(Staking::force_new_era_always(RuntimeOrigin::root()));
assert_eq!(Staking::force_era(), Forcing::ForceAlways);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(5)],
);
assert_eq!(Staking::force_era(), Forcing::ForceAlways);
});
}
#[test]
fn offence_deselects_validator_even_when_slash_is_zero() {
ExtBuilder::default().build_and_execute(|| {
assert!(Session::validators().contains(&11));
assert!(<Validators<Test>>::contains_key(11));
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(0)],
);
assert_eq!(Staking::force_era(), Forcing::ForceNew);
assert!(!<Validators<Test>>::contains_key(11));
mock::start_active_era(1);
assert!(!Session::validators().contains(&11));
assert!(!<Validators<Test>>::contains_key(11));
});
}
#[test]
fn slashing_performed_according_exposure() {
// This test checks that slashing is performed according the exposure (or more precisely,
// historical exposure), not the current balance.
ExtBuilder::default().build_and_execute(|| {
assert_eq!(Staking::eras_stakers(active_era(), &11).own, 1000);
// Handle an offence with a historical exposure.
on_offence_now(
&[OffenceDetails {
offender: (11, Exposure { total: 500, own: 500, others: vec![] }),
reporters: vec![],
}],
&[Perbill::from_percent(50)],
);
// The stash account should be slashed for 250 (50% of 500).
assert_eq!(Balances::free_balance(11), 1000 - 250);
});
}
#[test]
fn slash_in_old_span_does_not_deselect() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert!(<Validators<Test>>::contains_key(11));
assert!(Session::validators().contains(&11));
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(0)],
);
assert_eq!(Staking::force_era(), Forcing::ForceNew);
assert!(!<Validators<Test>>::contains_key(11));
mock::start_active_era(2);
Staking::validate(RuntimeOrigin::signed(11), Default::default()).unwrap();
assert_eq!(Staking::force_era(), Forcing::NotForcing);
assert!(<Validators<Test>>::contains_key(11));
assert!(!Session::validators().contains(&11));
mock::start_active_era(3);
// this staker is in a new slashing span now, having re-registered after
// their prior slash.
on_offence_in_era(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(0)],
1,
DisableStrategy::WhenSlashed,
);
// the validator doesn't get chilled again
assert!(Validators::<Test>::iter().any(|(stash, _)| stash == 11));
// but we are still forcing a new era
assert_eq!(Staking::force_era(), Forcing::ForceNew);
on_offence_in_era(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
// NOTE: A 100% slash here would clean up the account, causing de-registration.
&[Perbill::from_percent(95)],
1,
DisableStrategy::WhenSlashed,
);
// the validator doesn't get chilled again
assert!(Validators::<Test>::iter().any(|(stash, _)| stash == 11));
// but it's disabled
assert!(is_disabled(11));
// and we are still forcing a new era
assert_eq!(Staking::force_era(), Forcing::ForceNew);
});
}
#[test]
fn reporters_receive_their_slice() {
// This test verifies that the reporters of the offence receive their slice from the slashed
// amount.
ExtBuilder::default().build_and_execute(|| {
// The reporters' reward is calculated from the total exposure.
let initial_balance = 1125;
assert_eq!(Staking::eras_stakers(active_era(), &11).total, initial_balance);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![1, 2],
}],
&[Perbill::from_percent(50)],
);
// F1 * (reward_proportion * slash - 0)
// 50% * (10% * initial_balance / 2)
let reward = (initial_balance / 20) / 2;
let reward_each = reward / 2; // split into two pieces.
assert_eq!(Balances::free_balance(1), 10 + reward_each);
assert_eq!(Balances::free_balance(2), 20 + reward_each);
});
}
#[test]
fn subsequent_reports_in_same_span_pay_out_less() {
// This test verifies that the reporters of the offence receive their slice from the slashed
// amount, but less and less if they submit multiple reports in one span.
ExtBuilder::default().build_and_execute(|| {
// The reporters' reward is calculated from the total exposure.
let initial_balance = 1125;
assert_eq!(Staking::eras_stakers(active_era(), &11).total, initial_balance);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![1],
}],
&[Perbill::from_percent(20)],
);
// F1 * (reward_proportion * slash - 0)
// 50% * (10% * initial_balance * 20%)
let reward = (initial_balance / 5) / 20;
assert_eq!(Balances::free_balance(1), 10 + reward);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![1],
}],
&[Perbill::from_percent(50)],
);
let prior_payout = reward;
// F1 * (reward_proportion * slash - prior_payout)
// 50% * (10% * (initial_balance / 2) - prior_payout)
let reward = ((initial_balance / 20) - prior_payout) / 2;
assert_eq!(Balances::free_balance(1), 10 + prior_payout + reward);
});
}
#[test]
fn invulnerables_are_not_slashed() {
// For invulnerable validators no slashing is performed.
ExtBuilder::default().invulnerables(vec![11]).build_and_execute(|| {
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(21), 2000);
let exposure = Staking::eras_stakers(active_era(), &21);
let initial_balance = Staking::slashable_balance_of(&21);
let nominator_balances: Vec<_> =
exposure.others.iter().map(|o| Balances::free_balance(&o.who)).collect();
on_offence_now(
&[
OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
},
OffenceDetails {
offender: (21, Staking::eras_stakers(active_era(), &21)),
reporters: vec![],
},
],
&[Perbill::from_percent(50), Perbill::from_percent(20)],
);
// The validator 11 hasn't been slashed, but 21 has been.
assert_eq!(Balances::free_balance(11), 1000);
// 2000 - (0.2 * initial_balance)
assert_eq!(Balances::free_balance(21), 2000 - (2 * initial_balance / 10));
// ensure that nominators were slashed as well.
for (initial_balance, other) in nominator_balances.into_iter().zip(exposure.others) {
assert_eq!(
Balances::free_balance(&other.who),
initial_balance - (2 * other.value / 10),
);
}
});
}
#[test]
fn dont_slash_if_fraction_is_zero() {
// Don't slash if the fraction is zero.
ExtBuilder::default().build_and_execute(|| {
assert_eq!(Balances::free_balance(11), 1000);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(0)],
);
// The validator hasn't been slashed. The new era is not forced.
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Staking::force_era(), Forcing::ForceNew);
});
}
#[test]
fn only_slash_for_max_in_era() {
// multiple slashes within one era are only applied if it is more than any previous slash in the
// same era.
ExtBuilder::default().build_and_execute(|| {
assert_eq!(Balances::free_balance(11), 1000);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(50)],
);
// The validator has been slashed and has been force-chilled.
assert_eq!(Balances::free_balance(11), 500);
assert_eq!(Staking::force_era(), Forcing::ForceNew);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(25)],
);
// The validator has not been slashed additionally.
assert_eq!(Balances::free_balance(11), 500);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(60)],
);
// The validator got slashed 10% more.
assert_eq!(Balances::free_balance(11), 400);
})
}
#[test]
fn garbage_collection_after_slashing() {
// ensures that `SlashingSpans` and `SpanSlash` of an account is removed after reaping.
ExtBuilder::default()
.existential_deposit(2)
.balance_factor(2)
.build_and_execute(|| {
assert_eq!(Balances::free_balance(11), 2000);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
assert_eq!(Balances::free_balance(11), 2000 - 200);
assert!(SlashingSpans::<Test>::get(&11).is_some());
assert_eq!(SpanSlash::<Test>::get(&(11, 0)).amount(), &200);
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(100)],
);
// validator and nominator slash in era are garbage-collected by era change,
// so we don't test those here.
assert_eq!(Balances::free_balance(11), 2);
assert_eq!(Balances::total_balance(&11), 2);
let slashing_spans = SlashingSpans::<Test>::get(&11).unwrap();
assert_eq!(slashing_spans.iter().count(), 2);
// reap_stash respects num_slashing_spans so that weight is accurate
assert_noop!(
Staking::reap_stash(RuntimeOrigin::signed(20), 11, 0),
Error::<Test>::IncorrectSlashingSpans
);
assert_ok!(Staking::reap_stash(RuntimeOrigin::signed(20), 11, 2));
assert!(SlashingSpans::<Test>::get(&11).is_none());
assert_eq!(SpanSlash::<Test>::get(&(11, 0)).amount(), &0);
})
}
#[test]
fn garbage_collection_on_window_pruning() {
// ensures that `ValidatorSlashInEra` and `NominatorSlashInEra` are cleared after
// `BondingDuration`.
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
let now = active_era();
let exposure = Staking::eras_stakers(now, &11);
assert_eq!(Balances::free_balance(101), 2000);
let nominated_value = exposure.others.iter().find(|o| o.who == 101).unwrap().value;
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(now, &11)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
assert_eq!(Balances::free_balance(11), 900);
assert_eq!(Balances::free_balance(101), 2000 - (nominated_value / 10));
assert!(ValidatorSlashInEra::<Test>::get(&now, &11).is_some());
assert!(NominatorSlashInEra::<Test>::get(&now, &101).is_some());
// + 1 because we have to exit the bonding window.
for era in (0..(BondingDuration::get() + 1)).map(|offset| offset + now + 1) {
assert!(ValidatorSlashInEra::<Test>::get(&now, &11).is_some());
assert!(NominatorSlashInEra::<Test>::get(&now, &101).is_some());
mock::start_active_era(era);
}
assert!(ValidatorSlashInEra::<Test>::get(&now, &11).is_none());
assert!(NominatorSlashInEra::<Test>::get(&now, &101).is_none());
})
}
#[test]
fn slashing_nominators_by_span_max() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
mock::start_active_era(2);
mock::start_active_era(3);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(21), 2000);
assert_eq!(Balances::free_balance(101), 2000);
assert_eq!(Staking::slashable_balance_of(&21), 1000);
let exposure_11 = Staking::eras_stakers(active_era(), &11);
let exposure_21 = Staking::eras_stakers(active_era(), &21);
let nominated_value_11 = exposure_11.others.iter().find(|o| o.who == 101).unwrap().value;
let nominated_value_21 = exposure_21.others.iter().find(|o| o.who == 101).unwrap().value;
on_offence_in_era(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
2,
DisableStrategy::WhenSlashed,
);
assert_eq!(Balances::free_balance(11), 900);
let slash_1_amount = Perbill::from_percent(10) * nominated_value_11;
assert_eq!(Balances::free_balance(101), 2000 - slash_1_amount);
let expected_spans = vec![
slashing::SlashingSpan { index: 1, start: 4, length: None },
slashing::SlashingSpan { index: 0, start: 0, length: Some(4) },
];
let get_span = |account| SlashingSpans::<Test>::get(&account).unwrap();
assert_eq!(get_span(11).iter().collect::<Vec<_>>(), expected_spans);
assert_eq!(get_span(101).iter().collect::<Vec<_>>(), expected_spans);
// second slash: higher era, higher value, same span.
on_offence_in_era(
&[OffenceDetails {
offender: (21, Staking::eras_stakers(active_era(), &21)),
reporters: vec![],
}],
&[Perbill::from_percent(30)],
3,
DisableStrategy::WhenSlashed,
);
// 11 was not further slashed, but 21 and 101 were.
assert_eq!(Balances::free_balance(11), 900);
assert_eq!(Balances::free_balance(21), 1700);
let slash_2_amount = Perbill::from_percent(30) * nominated_value_21;
assert!(slash_2_amount > slash_1_amount);
// only the maximum slash in a single span is taken.
assert_eq!(Balances::free_balance(101), 2000 - slash_2_amount);
// third slash: in same era and on same validator as first, higher
// in-era value, but lower slash value than slash 2.
on_offence_in_era(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(20)],
2,
DisableStrategy::WhenSlashed,
);
// 11 was further slashed, but 21 and 101 were not.
assert_eq!(Balances::free_balance(11), 800);
assert_eq!(Balances::free_balance(21), 1700);
let slash_3_amount = Perbill::from_percent(20) * nominated_value_21;
assert!(slash_3_amount < slash_2_amount);
assert!(slash_3_amount > slash_1_amount);
// only the maximum slash in a single span is taken.
assert_eq!(Balances::free_balance(101), 2000 - slash_2_amount);
});
}
#[test]
fn slashes_are_summed_across_spans() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
mock::start_active_era(2);
mock::start_active_era(3);
assert_eq!(Balances::free_balance(21), 2000);
assert_eq!(Staking::slashable_balance_of(&21), 1000);
let get_span = |account| SlashingSpans::<Test>::get(&account).unwrap();
on_offence_now(
&[OffenceDetails {
offender: (21, Staking::eras_stakers(active_era(), &21)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
let expected_spans = vec![
slashing::SlashingSpan { index: 1, start: 4, length: None },
slashing::SlashingSpan { index: 0, start: 0, length: Some(4) },
];
assert_eq!(get_span(21).iter().collect::<Vec<_>>(), expected_spans);
assert_eq!(Balances::free_balance(21), 1900);
// 21 has been force-chilled. re-signal intent to validate.
Staking::validate(RuntimeOrigin::signed(21), Default::default()).unwrap();
mock::start_active_era(4);
assert_eq!(Staking::slashable_balance_of(&21), 900);
on_offence_now(
&[OffenceDetails {
offender: (21, Staking::eras_stakers(active_era(), &21)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
let expected_spans = vec![
slashing::SlashingSpan { index: 2, start: 5, length: None },
slashing::SlashingSpan { index: 1, start: 4, length: Some(1) },
slashing::SlashingSpan { index: 0, start: 0, length: Some(4) },
];
assert_eq!(get_span(21).iter().collect::<Vec<_>>(), expected_spans);
assert_eq!(Balances::free_balance(21), 1810);
});
}
#[test]
fn deferred_slashes_are_deferred() {
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
let exposure = Staking::eras_stakers(active_era(), &11);
assert_eq!(Balances::free_balance(101), 2000);
let nominated_value = exposure.others.iter().find(|o| o.who == 101).unwrap().value;
System::reset_events();
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
// nominations are not removed regardless of the deferring.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
mock::start_active_era(2);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
mock::start_active_era(3);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
// at the start of era 4, slashes from era 1 are processed,
// after being deferred for at least 2 full eras.
mock::start_active_era(4);
assert_eq!(Balances::free_balance(11), 900);
assert_eq!(Balances::free_balance(101), 2000 - (nominated_value / 10));
assert!(matches!(
staking_events_since_last_call().as_slice(),
&[
Event::Chilled { stash: 11 },
Event::ForceEra { mode: Forcing::ForceNew },
Event::SlashReported { validator: 11, slash_era: 1, .. },
Event::StakersElected,
Event::ForceEra { mode: Forcing::NotForcing },
..,
Event::Slashed { staker: 11, amount: 100 },
Event::Slashed { staker: 101, amount: 12 }
]
));
})
}
#[test]
fn retroactive_deferred_slashes_two_eras_before() {
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
assert_eq!(BondingDuration::get(), 3);
mock::start_active_era(1);
let exposure_11_at_era1 = Staking::eras_stakers(active_era(), &11);
mock::start_active_era(3);
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
System::reset_events();
on_offence_in_era(
&[OffenceDetails { offender: (11, exposure_11_at_era1), reporters: vec![] }],
&[Perbill::from_percent(10)],
1, // should be deferred for two full eras, and applied at the beginning of era 4.
DisableStrategy::Never,
);
mock::start_active_era(4);
assert!(matches!(
staking_events_since_last_call().as_slice(),
&[
Event::Chilled { stash: 11 },
Event::ForceEra { mode: Forcing::ForceNew },
Event::SlashReported { validator: 11, slash_era: 1, .. },
..,
Event::Slashed { staker: 11, amount: 100 },
Event::Slashed { staker: 101, amount: 12 }
]
));
})
}
#[test]
fn retroactive_deferred_slashes_one_before() {
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
assert_eq!(BondingDuration::get(), 3);
mock::start_active_era(1);
let exposure_11_at_era1 = Staking::eras_stakers(active_era(), &11);
// unbond at slash era.
mock::start_active_era(2);
assert_ok!(Staking::chill(RuntimeOrigin::signed(11)));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 100));
mock::start_active_era(3);
System::reset_events();
on_offence_in_era(
&[OffenceDetails { offender: (11, exposure_11_at_era1), reporters: vec![] }],
&[Perbill::from_percent(10)],
2, // should be deferred for two full eras, and applied at the beginning of era 5.
DisableStrategy::Never,
);
mock::start_active_era(4);
assert_eq!(Staking::ledger(11.into()).unwrap().total, 1000);
// slash happens after the next line.
mock::start_active_era(5);
assert!(matches!(
staking_events_since_last_call().as_slice(),
&[
Event::SlashReported { validator: 11, slash_era: 2, .. },
..,
Event::Slashed { staker: 11, amount: 100 },
Event::Slashed { staker: 101, amount: 12 }
]
));
// their ledger has already been slashed.
assert_eq!(Staking::ledger(11.into()).unwrap().total, 900);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(11), 1000));
assert_eq!(Staking::ledger(11.into()).unwrap().total, 900);
})
}
#[test]
fn staker_cannot_bail_deferred_slash() {
// as long as SlashDeferDuration is less than BondingDuration, this should not be possible.
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
let exposure = Staking::eras_stakers(active_era(), &11);
let nominated_value = exposure.others.iter().find(|o| o.who == 101).unwrap().value;
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
// now we chill
assert_ok!(Staking::chill(RuntimeOrigin::signed(101)));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(101), 500));
assert_eq!(Staking::current_era().unwrap(), 1);
assert_eq!(active_era(), 1);
assert_eq!(
Ledger::<Test>::get(101).unwrap(),
StakingLedgerInspect {
active: 0,
total: 500,
stash: 101,
legacy_claimed_rewards: bounded_vec![],
unlocking: bounded_vec![UnlockChunk { era: 4u32, value: 500 }],
}
);
// no slash yet.
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
// no slash yet.
mock::start_active_era(2);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
assert_eq!(Staking::current_era().unwrap(), 2);
assert_eq!(active_era(), 2);
// no slash yet.
mock::start_active_era(3);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
assert_eq!(Staking::current_era().unwrap(), 3);
assert_eq!(active_era(), 3);
// and cannot yet unbond:
assert_storage_noop!(assert!(
Staking::withdraw_unbonded(RuntimeOrigin::signed(101), 0).is_ok()
));
assert_eq!(
Ledger::<Test>::get(101).unwrap().unlocking.into_inner(),
vec![UnlockChunk { era: 4u32, value: 500 as Balance }],
);
// at the start of era 4, slashes from era 1 are processed,
// after being deferred for at least 2 full eras.
mock::start_active_era(4);
assert_eq!(Balances::free_balance(11), 900);
assert_eq!(Balances::free_balance(101), 2000 - (nominated_value / 10));
// and the leftover of the funds can now be unbonded.
})
}
#[test]
fn remove_deferred() {
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
let exposure = Staking::eras_stakers(active_era(), &11);
assert_eq!(Balances::free_balance(101), 2000);
let nominated_value = exposure.others.iter().find(|o| o.who == 101).unwrap().value;
// deferred to start of era 4.
on_offence_now(
&[OffenceDetails { offender: (11, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(10)],
);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
mock::start_active_era(2);
// reported later, but deferred to start of era 4 as well.
System::reset_events();
on_offence_in_era(
&[OffenceDetails { offender: (11, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(15)],
1,
DisableStrategy::WhenSlashed,
);
// fails if empty
assert_noop!(
Staking::cancel_deferred_slash(RuntimeOrigin::root(), 1, vec![]),
Error::<Test>::EmptyTargets
);
// cancel one of them.
assert_ok!(Staking::cancel_deferred_slash(RuntimeOrigin::root(), 4, vec![0]));
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
mock::start_active_era(3);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
// at the start of era 4, slashes from era 1 are processed,
// after being deferred for at least 2 full eras.
mock::start_active_era(4);
// the first slash for 10% was cancelled, but the 15% one not.
assert!(matches!(
staking_events_since_last_call().as_slice(),
&[
Event::SlashReported { validator: 11, slash_era: 1, .. },
..,
Event::Slashed { staker: 11, amount: 50 },
Event::Slashed { staker: 101, amount: 7 }
]
));
let slash_10 = Perbill::from_percent(10);
let slash_15 = Perbill::from_percent(15);
let initial_slash = slash_10 * nominated_value;
let total_slash = slash_15 * nominated_value;
let actual_slash = total_slash - initial_slash;
// 5% slash (15 - 10) processed now.
assert_eq!(Balances::free_balance(11), 950);
assert_eq!(Balances::free_balance(101), 2000 - actual_slash);
})
}
#[test]
fn remove_multi_deferred() {
ExtBuilder::default().slash_defer_duration(2).build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
let exposure = Staking::eras_stakers(active_era(), &11);
assert_eq!(Balances::free_balance(101), 2000);
on_offence_now(
&[OffenceDetails { offender: (11, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(10)],
);
on_offence_now(
&[OffenceDetails {
offender: (21, Staking::eras_stakers(active_era(), &21)),
reporters: vec![],
}],
&[Perbill::from_percent(10)],
);
on_offence_now(
&[OffenceDetails { offender: (11, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
on_offence_now(
&[OffenceDetails { offender: (42, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
on_offence_now(
&[OffenceDetails { offender: (69, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
assert_eq!(UnappliedSlashes::<Test>::get(&4).len(), 5);
// fails if list is not sorted
assert_noop!(
Staking::cancel_deferred_slash(RuntimeOrigin::root(), 1, vec![2, 0, 4]),
Error::<Test>::NotSortedAndUnique
);
// fails if list is not unique
assert_noop!(
Staking::cancel_deferred_slash(RuntimeOrigin::root(), 1, vec![0, 2, 2]),
Error::<Test>::NotSortedAndUnique
);
// fails if bad index
assert_noop!(
Staking::cancel_deferred_slash(RuntimeOrigin::root(), 1, vec![1, 2, 3, 4, 5]),
Error::<Test>::InvalidSlashIndex
);
assert_ok!(Staking::cancel_deferred_slash(RuntimeOrigin::root(), 4, vec![0, 2, 4]));
let slashes = UnappliedSlashes::<Test>::get(&4);
assert_eq!(slashes.len(), 2);
assert_eq!(slashes[0].validator, 21);
assert_eq!(slashes[1].validator, 42);
})
}
#[test]
fn slash_kicks_validators_not_nominators_and_disables_nominator_for_kicked_validator() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert_eq_uvec!(Session::validators(), vec![11, 21]);
// pre-slash balance
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
// 100 has approval for 11 as of now
assert!(Staking::nominators(101).unwrap().targets.contains(&11));
// 11 and 21 both have the support of 100
let exposure_11 = Staking::eras_stakers(active_era(), &11);
let exposure_21 = Staking::eras_stakers(active_era(), &21);
assert_eq!(exposure_11.total, 1000 + 125);
assert_eq!(exposure_21.total, 1000 + 375);
on_offence_now(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::from_percent(10)],
);
assert_eq!(
staking_events_since_last_call(),
vec![
Event::StakersElected,
Event::EraPaid { era_index: 0, validator_payout: 11075, remainder: 33225 },
Event::Chilled { stash: 11 },
Event::ForceEra { mode: Forcing::ForceNew },
Event::SlashReported {
validator: 11,
fraction: Perbill::from_percent(10),
slash_era: 1
},
Event::Slashed { staker: 11, amount: 100 },
Event::Slashed { staker: 101, amount: 12 },
]
);
// post-slash balance
let nominator_slash_amount_11 = 125 / 10;
assert_eq!(Balances::free_balance(11), 900);
assert_eq!(Balances::free_balance(101), 2000 - nominator_slash_amount_11);
// check that validator was chilled.
assert!(Validators::<Test>::iter().all(|(stash, _)| stash != 11));
// actually re-bond the slashed validator
assert_ok!(Staking::validate(RuntimeOrigin::signed(11), Default::default()));
mock::start_active_era(2);
let exposure_11 = Staking::eras_stakers(active_era(), &11);
let exposure_21 = Staking::eras_stakers(active_era(), &21);
// 11's own expo is reduced. sum of support from 11 is less (448), which is 500
// 900 + 146
assert!(matches!(exposure_11, Exposure { own: 900, total: 1046, .. }));
// 1000 + 342
assert!(matches!(exposure_21, Exposure { own: 1000, total: 1342, .. }));
assert_eq!(500 - 146 - 342, nominator_slash_amount_11);
});
}
#[test]
fn non_slashable_offence_doesnt_disable_validator() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert_eq_uvec!(Session::validators(), vec![11, 21]);
let exposure_11 = Staking::eras_stakers(Staking::active_era().unwrap().index, &11);
let exposure_21 = Staking::eras_stakers(Staking::active_era().unwrap().index, &21);
// offence with no slash associated
on_offence_now(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::zero()],
);
// it does NOT affect the nominator.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
// offence that slashes 25% of the bond
on_offence_now(
&[OffenceDetails { offender: (21, exposure_21.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
// it DOES NOT affect the nominator.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
assert_eq!(
staking_events_since_last_call(),
vec![
Event::StakersElected,
Event::EraPaid { era_index: 0, validator_payout: 11075, remainder: 33225 },
Event::Chilled { stash: 11 },
Event::ForceEra { mode: Forcing::ForceNew },
Event::SlashReported {
validator: 11,
fraction: Perbill::from_percent(0),
slash_era: 1
},
Event::Chilled { stash: 21 },
Event::SlashReported {
validator: 21,
fraction: Perbill::from_percent(25),
slash_era: 1
},
Event::Slashed { staker: 21, amount: 250 },
Event::Slashed { staker: 101, amount: 94 }
]
);
// the offence for validator 10 wasn't slashable so it wasn't disabled
assert!(!is_disabled(11));
// whereas validator 20 gets disabled
assert!(is_disabled(21));
});
}
#[test]
fn slashing_independent_of_disabling_validator() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert_eq_uvec!(Session::validators(), vec![11, 21]);
let exposure_11 = Staking::eras_stakers(Staking::active_era().unwrap().index, &11);
let exposure_21 = Staking::eras_stakers(Staking::active_era().unwrap().index, &21);
let now = Staking::active_era().unwrap().index;
// offence with no slash associated, BUT disabling
on_offence_in_era(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::zero()],
now,
DisableStrategy::Always,
);
// nomination remains untouched.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
// offence that slashes 25% of the bond, BUT not disabling
on_offence_in_era(
&[OffenceDetails { offender: (21, exposure_21.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
now,
DisableStrategy::Never,
);
// nomination remains untouched.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
assert_eq!(
staking_events_since_last_call(),
vec![
Event::StakersElected,
Event::EraPaid { era_index: 0, validator_payout: 11075, remainder: 33225 },
Event::Chilled { stash: 11 },
Event::ForceEra { mode: Forcing::ForceNew },
Event::SlashReported {
validator: 11,
fraction: Perbill::from_percent(0),
slash_era: 1
},
Event::Chilled { stash: 21 },
Event::SlashReported {
validator: 21,
fraction: Perbill::from_percent(25),
slash_era: 1
},
Event::Slashed { staker: 21, amount: 250 },
Event::Slashed { staker: 101, amount: 94 }
]
);
// the offence for validator 10 was explicitly disabled
assert!(is_disabled(11));
// whereas validator 21 is explicitly not disabled
assert!(!is_disabled(21));
});
}
#[test]
fn offence_threshold_triggers_new_era() {
ExtBuilder::default()
.validator_count(4)
.set_status(41, StakerStatus::Validator)
.build_and_execute(|| {
mock::start_active_era(1);
assert_eq_uvec!(Session::validators(), vec![11, 21, 31, 41]);
assert_eq!(
<Test as Config>::OffendingValidatorsThreshold::get(),
Perbill::from_percent(75),
);
// we have 4 validators and an offending validator threshold of 75%,
// once the third validator commits an offence a new era should be forced
let exposure_11 = Staking::eras_stakers(Staking::active_era().unwrap().index, &11);
let exposure_21 = Staking::eras_stakers(Staking::active_era().unwrap().index, &21);
let exposure_31 = Staking::eras_stakers(Staking::active_era().unwrap().index, &31);
on_offence_now(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::zero()],
);
assert_eq!(ForceEra::<Test>::get(), Forcing::NotForcing);
on_offence_now(
&[OffenceDetails { offender: (21, exposure_21.clone()), reporters: vec![] }],
&[Perbill::zero()],
);
assert_eq!(ForceEra::<Test>::get(), Forcing::NotForcing);
on_offence_now(
&[OffenceDetails { offender: (31, exposure_31.clone()), reporters: vec![] }],
&[Perbill::zero()],
);
assert_eq!(ForceEra::<Test>::get(), Forcing::ForceNew);
});
}
#[test]
fn disabled_validators_are_kept_disabled_for_whole_era() {
ExtBuilder::default()
.validator_count(4)
.set_status(41, StakerStatus::Validator)
.build_and_execute(|| {
mock::start_active_era(1);
assert_eq_uvec!(Session::validators(), vec![11, 21, 31, 41]);
assert_eq!(<Test as Config>::SessionsPerEra::get(), 3);
let exposure_11 = Staking::eras_stakers(Staking::active_era().unwrap().index, &11);
let exposure_21 = Staking::eras_stakers(Staking::active_era().unwrap().index, &21);
on_offence_now(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::zero()],
);
on_offence_now(
&[OffenceDetails { offender: (21, exposure_21.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
// nominations are not updated.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
// validator 11 should not be disabled since the offence wasn't slashable
assert!(!is_disabled(11));
// validator 21 gets disabled since it got slashed
assert!(is_disabled(21));
advance_session();
// disabled validators should carry-on through all sessions in the era
assert!(!is_disabled(11));
assert!(is_disabled(21));
// validator 11 should now get disabled
on_offence_now(
&[OffenceDetails { offender: (11, exposure_11.clone()), reporters: vec![] }],
&[Perbill::from_percent(25)],
);
// nominations are not updated.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
advance_session();
// and both are disabled in the last session of the era
assert!(is_disabled(11));
assert!(is_disabled(21));
mock::start_active_era(2);
// when a new era starts disabled validators get cleared
assert!(!is_disabled(11));
assert!(!is_disabled(21));
});
}
#[test]
fn claim_reward_at_the_last_era_and_no_double_claim_and_invalid_claim() {
// should check that:
// * rewards get paid until history_depth for both validators and nominators
// * an invalid era to claim doesn't update last_reward
// * double claim of one era fails
ExtBuilder::default().nominate(true).build_and_execute(|| {
// Consumed weight for all payout_stakers dispatches that fail
let err_weight = <Test as Config>::WeightInfo::payout_stakers_alive_staked(0);
let init_balance_11 = Balances::total_balance(&11);
let init_balance_101 = Balances::total_balance(&101);
let part_for_11 = Perbill::from_rational::<u32>(1000, 1125);
let part_for_101 = Perbill::from_rational::<u32>(125, 1125);
// Check state
Payee::<Test>::insert(11, RewardDestination::Account(11));
Payee::<Test>::insert(101, RewardDestination::Account(101));
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_0 = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(1);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// Increase total token issuance to affect the total payout.
let _ = Balances::deposit_creating(&999, 1_000_000_000);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_1 = current_total_payout_for_duration(reward_time_per_era());
assert!(total_payout_1 != total_payout_0);
mock::start_active_era(2);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// Increase total token issuance to affect the total payout.
let _ = Balances::deposit_creating(&999, 1_000_000_000);
// Compute total payout now for whole duration as other parameter won't change
let total_payout_2 = current_total_payout_for_duration(reward_time_per_era());
assert!(total_payout_2 != total_payout_0);
assert!(total_payout_2 != total_payout_1);
mock::start_active_era(HistoryDepth::get() + 1);
let active_era = active_era();
// This is the latest planned era in staking, not the active era
let current_era = Staking::current_era().unwrap();
// Last kept is 1:
assert!(current_era - HistoryDepth::get() == 1);
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 0, 0),
// Fail: Era out of history
Error::<Test>::InvalidEraToReward.with_weight(err_weight)
);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0));
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 2, 0));
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 2, 0),
// Fail: Double claim
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, active_era, 0),
// Fail: Era not finished yet
Error::<Test>::InvalidEraToReward.with_weight(err_weight)
);
// Era 0 can't be rewarded anymore and current era can't be rewarded yet
// only era 1 and 2 can be rewarded.
assert_eq!(
Balances::total_balance(&11),
init_balance_11 + part_for_11 * (total_payout_1 + total_payout_2),
);
assert_eq!(
Balances::total_balance(&101),
init_balance_101 + part_for_101 * (total_payout_1 + total_payout_2),
);
});
}
#[test]
fn zero_slash_keeps_nominators() {
ExtBuilder::default().build_and_execute(|| {
mock::start_active_era(1);
assert_eq!(Balances::free_balance(11), 1000);
let exposure = Staking::eras_stakers(active_era(), &11);
assert_eq!(Balances::free_balance(101), 2000);
on_offence_now(
&[OffenceDetails { offender: (11, exposure.clone()), reporters: vec![] }],
&[Perbill::from_percent(0)],
);
assert_eq!(Balances::free_balance(11), 1000);
assert_eq!(Balances::free_balance(101), 2000);
// 11 is still removed..
assert!(Validators::<Test>::iter().all(|(stash, _)| stash != 11));
// but their nominations are kept.
assert_eq!(Staking::nominators(101).unwrap().targets, vec![11, 21]);
});
}
#[test]
fn six_session_delay() {
ExtBuilder::default().initialize_first_session(false).build_and_execute(|| {
use pallet_session::SessionManager;
let val_set = Session::validators();
let init_session = Session::current_index();
let init_active_era = active_era();
// pallet-session is delaying session by one, thus the next session to plan is +2.
assert_eq!(<Staking as SessionManager<_>>::new_session(init_session + 2), None);
assert_eq!(
<Staking as SessionManager<_>>::new_session(init_session + 3),
Some(val_set.clone())
);
assert_eq!(<Staking as SessionManager<_>>::new_session(init_session + 4), None);
assert_eq!(<Staking as SessionManager<_>>::new_session(init_session + 5), None);
assert_eq!(
<Staking as SessionManager<_>>::new_session(init_session + 6),
Some(val_set.clone())
);
<Staking as SessionManager<_>>::end_session(init_session);
<Staking as SessionManager<_>>::start_session(init_session + 1);
assert_eq!(active_era(), init_active_era);
<Staking as SessionManager<_>>::end_session(init_session + 1);
<Staking as SessionManager<_>>::start_session(init_session + 2);
assert_eq!(active_era(), init_active_era);
// Reward current era
Staking::reward_by_ids(vec![(11, 1)]);
// New active era is triggered here.
<Staking as SessionManager<_>>::end_session(init_session + 2);
<Staking as SessionManager<_>>::start_session(init_session + 3);
assert_eq!(active_era(), init_active_era + 1);
<Staking as SessionManager<_>>::end_session(init_session + 3);
<Staking as SessionManager<_>>::start_session(init_session + 4);
assert_eq!(active_era(), init_active_era + 1);
<Staking as SessionManager<_>>::end_session(init_session + 4);
<Staking as SessionManager<_>>::start_session(init_session + 5);
assert_eq!(active_era(), init_active_era + 1);
// Reward current era
Staking::reward_by_ids(vec![(21, 2)]);
// New active era is triggered here.
<Staking as SessionManager<_>>::end_session(init_session + 5);
<Staking as SessionManager<_>>::start_session(init_session + 6);
assert_eq!(active_era(), init_active_era + 2);
// That reward are correct
assert_eq!(Staking::eras_reward_points(init_active_era).total, 1);
assert_eq!(Staking::eras_reward_points(init_active_era + 1).total, 2);
});
}
#[test]
fn test_nominators_over_max_exposure_page_size_are_rewarded() {
ExtBuilder::default().build_and_execute(|| {
// bond one nominator more than the max exposure page size to validator 11.
for i in 0..=MaxExposurePageSize::get() {
let stash = 10_000 + i as AccountId;
let balance = 10_000 + i as Balance;
Balances::make_free_balance_be(&stash, balance);
assert_ok!(Staking::bond(
RuntimeOrigin::signed(stash),
balance,
RewardDestination::Stash
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(stash), vec![11]));
}
mock::start_active_era(1);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
mock::make_all_reward_payment(1);
// Assert nominators from 1 to Max are rewarded
let mut i: u32 = 0;
while i < MaxExposurePageSize::get() {
let stash = 10_000 + i as AccountId;
let balance = 10_000 + i as Balance;
assert!(Balances::free_balance(&stash) > balance);
i += 1;
}
// Assert overflowing nominators from page 1 are also rewarded
let stash = 10_000 + i as AccountId;
assert!(Balances::free_balance(&stash) > (10_000 + i) as Balance);
});
}
#[test]
fn test_nominators_are_rewarded_for_all_exposure_page() {
ExtBuilder::default().build_and_execute(|| {
// 3 pages of exposure
let nominator_count = 2 * MaxExposurePageSize::get() + 1;
for i in 0..nominator_count {
let stash = 10_000 + i as AccountId;
let balance = 10_000 + i as Balance;
Balances::make_free_balance_be(&stash, balance);
assert_ok!(Staking::bond(
RuntimeOrigin::signed(stash),
balance,
RewardDestination::Stash
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(stash), vec![11]));
}
mock::start_active_era(1);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
mock::make_all_reward_payment(1);
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 3);
// Assert all nominators are rewarded according to their stake
for i in 0..nominator_count {
// balance of the nominator after the reward payout.
let current_balance = Balances::free_balance(&((10000 + i) as AccountId));
// balance of the nominator in the previous iteration.
let previous_balance = Balances::free_balance(&((10000 + i - 1) as AccountId));
// balance before the reward.
let original_balance = 10_000 + i as Balance;
assert!(current_balance > original_balance);
// since the stake of the nominator is increasing for each iteration, the final balance
// after the reward should also be higher than the previous iteration.
assert!(current_balance > previous_balance);
}
});
}
#[test]
fn test_multi_page_payout_stakers_by_page() {
// Test that payout_stakers work in general and that it pays the correct amount of reward.
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let balance = 1000;
// Track the exposure of the validator and all nominators.
let mut total_exposure = balance;
// Create a validator:
bond_validator(11, balance); // Default(64)
assert_eq!(Validators::<Test>::count(), 1);
// Create nominators, targeting stash of validators
for i in 0..100 {
let bond_amount = balance + i as Balance;
bond_nominator(1000 + i, bond_amount, vec![11]);
// with multi page reward payout, payout exposure is same as total exposure.
total_exposure += bond_amount;
}
mock::start_active_era(1);
Staking::reward_by_ids(vec![(11, 1)]);
// Since `MaxExposurePageSize = 64`, there are two pages of validator exposure.
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 2);
// compute and ensure the reward amount is greater than zero.
let payout = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
// verify the exposures are calculated correctly.
let actual_exposure_0 = EraInfo::<Test>::get_paged_exposure(1, &11, 0).unwrap();
assert_eq!(actual_exposure_0.total(), total_exposure);
assert_eq!(actual_exposure_0.own(), 1000);
assert_eq!(actual_exposure_0.others().len(), 64);
let actual_exposure_1 = EraInfo::<Test>::get_paged_exposure(1, &11, 1).unwrap();
assert_eq!(actual_exposure_1.total(), total_exposure);
// own stake is only included once in the first page
assert_eq!(actual_exposure_1.own(), 0);
assert_eq!(actual_exposure_1.others().len(), 100 - 64);
let pre_payout_total_issuance = Balances::total_issuance();
RewardOnUnbalanceWasCalled::set(false);
System::reset_events();
let controller_balance_before_p0_payout = Balances::free_balance(&11);
// Payout rewards for first exposure page
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0));
// verify `Rewarded` events are being executed
assert!(matches!(
staking_events_since_last_call().as_slice(),
&[
..,
Event::Rewarded { stash: 1063, dest: RewardDestination::Stash, amount: 111 },
Event::Rewarded { stash: 1064, dest: RewardDestination::Stash, amount: 111 },
]
));
let controller_balance_after_p0_payout = Balances::free_balance(&11);
// verify rewards have been paid out but still some left
assert!(Balances::total_issuance() > pre_payout_total_issuance);
assert!(Balances::total_issuance() < pre_payout_total_issuance + payout);
// verify the validator has been rewarded
assert!(controller_balance_after_p0_payout > controller_balance_before_p0_payout);
// Payout the second and last page of nominators
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 1));
// verify `Rewarded` events are being executed for the second page.
let events = staking_events_since_last_call();
assert!(matches!(
events.as_slice(),
&[
Event::PayoutStarted { era_index: 1, validator_stash: 11 },
Event::Rewarded { stash: 1065, dest: RewardDestination::Stash, amount: 111 },
Event::Rewarded { stash: 1066, dest: RewardDestination::Stash, amount: 111 },
..
]
));
// verify the validator was not rewarded the second time
assert_eq!(Balances::free_balance(&11), controller_balance_after_p0_payout);
// verify all rewards have been paid out
assert_eq_error_rate!(Balances::total_issuance(), pre_payout_total_issuance + payout, 2);
assert!(RewardOnUnbalanceWasCalled::get());
// Top 64 nominators of validator 11 automatically paid out, including the validator
assert!(Balances::free_balance(&11) > balance);
for i in 0..100 {
assert!(Balances::free_balance(&(1000 + i)) > balance + i as Balance);
}
// verify we no longer track rewards in `legacy_claimed_rewards` vec
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![]
}
);
// verify rewards are tracked to prevent double claims
let ledger = Staking::ledger(11.into());
for page in 0..EraInfo::<Test>::get_page_count(1, &11) {
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
1,
ledger.as_ref().unwrap(),
&11,
page
),
true
);
}
for i in 3..16 {
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let payout = current_total_payout_for_duration(reward_time_per_era());
let pre_payout_total_issuance = Balances::total_issuance();
mock::start_active_era(i);
RewardOnUnbalanceWasCalled::set(false);
mock::make_all_reward_payment(i - 1);
assert_eq_error_rate!(
Balances::total_issuance(),
pre_payout_total_issuance + payout,
2
);
assert!(RewardOnUnbalanceWasCalled::get());
// verify we track rewards for each era and page
for page in 0..EraInfo::<Test>::get_page_count(i - 1, &11) {
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
i - 1,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
page
),
true
);
}
}
assert_eq!(Staking::claimed_rewards(14, &11), vec![0, 1]);
let last_era = 99;
let history_depth = HistoryDepth::get();
let last_reward_era = last_era - 1;
let first_claimable_reward_era = last_era - history_depth;
for i in 16..=last_era {
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(i);
}
// verify we clean up history as we go
for era in 0..15 {
assert_eq!(Staking::claimed_rewards(era, &11), Vec::<sp_staking::Page>::new());
}
// verify only page 0 is marked as claimed
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
first_claimable_reward_era,
0
));
assert_eq!(Staking::claimed_rewards(first_claimable_reward_era, &11), vec![0]);
// verify page 0 and 1 are marked as claimed
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
first_claimable_reward_era,
1
));
assert_eq!(Staking::claimed_rewards(first_claimable_reward_era, &11), vec![0, 1]);
// verify only page 0 is marked as claimed
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
last_reward_era,
0
));
assert_eq!(Staking::claimed_rewards(last_reward_era, &11), vec![0]);
// verify page 0 and 1 are marked as claimed
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
last_reward_era,
1
));
assert_eq!(Staking::claimed_rewards(last_reward_era, &11), vec![0, 1]);
// Out of order claims works.
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 69, 0));
assert_eq!(Staking::claimed_rewards(69, &11), vec![0]);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 23, 1));
assert_eq!(Staking::claimed_rewards(23, &11), vec![1]);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 42, 0));
assert_eq!(Staking::claimed_rewards(42, &11), vec![0]);
});
}
#[test]
fn test_multi_page_payout_stakers_backward_compatible() {
// Test that payout_stakers work in general and that it pays the correct amount of reward.
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let balance = 1000;
// Track the exposure of the validator and all nominators.
let mut total_exposure = balance;
// Create a validator:
bond_validator(11, balance); // Default(64)
assert_eq!(Validators::<Test>::count(), 1);
let err_weight = <Test as Config>::WeightInfo::payout_stakers_alive_staked(0);
// Create nominators, targeting stash of validators
for i in 0..100 {
let bond_amount = balance + i as Balance;
bond_nominator(1000 + i, bond_amount, vec![11]);
// with multi page reward payout, payout exposure is same as total exposure.
total_exposure += bond_amount;
}
mock::start_active_era(1);
Staking::reward_by_ids(vec![(11, 1)]);
// Since `MaxExposurePageSize = 64`, there are two pages of validator exposure.
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 2);
// compute and ensure the reward amount is greater than zero.
let payout = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
// verify the exposures are calculated correctly.
let actual_exposure_0 = EraInfo::<Test>::get_paged_exposure(1, &11, 0).unwrap();
assert_eq!(actual_exposure_0.total(), total_exposure);
assert_eq!(actual_exposure_0.own(), 1000);
assert_eq!(actual_exposure_0.others().len(), 64);
let actual_exposure_1 = EraInfo::<Test>::get_paged_exposure(1, &11, 1).unwrap();
assert_eq!(actual_exposure_1.total(), total_exposure);
// own stake is only included once in the first page
assert_eq!(actual_exposure_1.own(), 0);
assert_eq!(actual_exposure_1.others().len(), 100 - 64);
let pre_payout_total_issuance = Balances::total_issuance();
RewardOnUnbalanceWasCalled::set(false);
let controller_balance_before_p0_payout = Balances::free_balance(&11);
// Payout rewards for first exposure page
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, 1));
// page 0 is claimed
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
let controller_balance_after_p0_payout = Balances::free_balance(&11);
// verify rewards have been paid out but still some left
assert!(Balances::total_issuance() > pre_payout_total_issuance);
assert!(Balances::total_issuance() < pre_payout_total_issuance + payout);
// verify the validator has been rewarded
assert!(controller_balance_after_p0_payout > controller_balance_before_p0_payout);
// This should payout the second and last page of nominators
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, 1));
// cannot claim any more pages
assert_noop!(
Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, 1),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
// verify the validator was not rewarded the second time
assert_eq!(Balances::free_balance(&11), controller_balance_after_p0_payout);
// verify all rewards have been paid out
assert_eq_error_rate!(Balances::total_issuance(), pre_payout_total_issuance + payout, 2);
assert!(RewardOnUnbalanceWasCalled::get());
// verify all nominators of validator 11 are paid out, including the validator
// Validator payout goes to controller.
assert!(Balances::free_balance(&11) > balance);
for i in 0..100 {
assert!(Balances::free_balance(&(1000 + i)) > balance + i as Balance);
}
// verify we no longer track rewards in `legacy_claimed_rewards` vec
let ledger = Staking::ledger(11.into());
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![]
}
);
// verify rewards are tracked to prevent double claims
for page in 0..EraInfo::<Test>::get_page_count(1, &11) {
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
1,
ledger.as_ref().unwrap(),
&11,
page
),
true
);
}
for i in 3..16 {
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let payout = current_total_payout_for_duration(reward_time_per_era());
let pre_payout_total_issuance = Balances::total_issuance();
mock::start_active_era(i);
RewardOnUnbalanceWasCalled::set(false);
mock::make_all_reward_payment(i - 1);
assert_eq_error_rate!(
Balances::total_issuance(),
pre_payout_total_issuance + payout,
2
);
assert!(RewardOnUnbalanceWasCalled::get());
// verify we track rewards for each era and page
for page in 0..EraInfo::<Test>::get_page_count(i - 1, &11) {
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
i - 1,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
page
),
true
);
}
}
assert_eq!(Staking::claimed_rewards(14, &11), vec![0, 1]);
let last_era = 99;
let history_depth = HistoryDepth::get();
let last_reward_era = last_era - 1;
let first_claimable_reward_era = last_era - history_depth;
for i in 16..=last_era {
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(i);
}
// verify we clean up history as we go
for era in 0..15 {
assert_eq!(Staking::claimed_rewards(era, &11), Vec::<sp_staking::Page>::new());
}
// verify only page 0 is marked as claimed
assert_ok!(Staking::payout_stakers(
RuntimeOrigin::signed(1337),
11,
first_claimable_reward_era
));
assert_eq!(Staking::claimed_rewards(first_claimable_reward_era, &11), vec![0]);
// verify page 0 and 1 are marked as claimed
assert_ok!(Staking::payout_stakers(
RuntimeOrigin::signed(1337),
11,
first_claimable_reward_era,
));
assert_eq!(Staking::claimed_rewards(first_claimable_reward_era, &11), vec![0, 1]);
// change order and verify only page 1 is marked as claimed
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
last_reward_era,
1
));
assert_eq!(Staking::claimed_rewards(last_reward_era, &11), vec![1]);
// verify page 0 is claimed even when explicit page is not passed
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, last_reward_era,));
assert_eq!(Staking::claimed_rewards(last_reward_era, &11), vec![1, 0]);
// cannot claim any more pages
assert_noop!(
Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, last_reward_era),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
// Create 4 nominator pages
for i in 100..200 {
let bond_amount = balance + i as Balance;
bond_nominator(1000 + i, bond_amount, vec![11]);
}
let test_era = last_era + 1;
mock::start_active_era(test_era);
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(test_era + 1);
// Out of order claims works.
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, test_era, 2));
assert_eq!(Staking::claimed_rewards(test_era, &11), vec![2]);
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, test_era));
assert_eq!(Staking::claimed_rewards(test_era, &11), vec![2, 0]);
// cannot claim page 2 again
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, test_era, 2),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, test_era));
assert_eq!(Staking::claimed_rewards(test_era, &11), vec![2, 0, 1]);
assert_ok!(Staking::payout_stakers(RuntimeOrigin::signed(1337), 11, test_era));
assert_eq!(Staking::claimed_rewards(test_era, &11), vec![2, 0, 1, 3]);
});
}
#[test]
fn test_page_count_and_size() {
// Test that payout_stakers work in general and that it pays the correct amount of reward.
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let balance = 1000;
// Track the exposure of the validator and all nominators.
// Create a validator:
bond_validator(11, balance); // Default(64)
assert_eq!(Validators::<Test>::count(), 1);
// Create nominators, targeting stash of validators
for i in 0..100 {
let bond_amount = balance + i as Balance;
bond_nominator(1000 + i, bond_amount, vec![11]);
}
mock::start_active_era(1);
// Since max exposure page size is 64, 2 pages of nominators are created.
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 2);
// first page has 64 nominators
assert_eq!(EraInfo::<Test>::get_paged_exposure(1, &11, 0).unwrap().others().len(), 64);
// second page has 36 nominators
assert_eq!(EraInfo::<Test>::get_paged_exposure(1, &11, 1).unwrap().others().len(), 36);
// now lets decrease page size
MaxExposurePageSize::set(32);
mock::start_active_era(2);
// now we expect 4 pages.
assert_eq!(EraInfo::<Test>::get_page_count(2, &11), 4);
// first 3 pages have 32 nominators each
assert_eq!(EraInfo::<Test>::get_paged_exposure(2, &11, 0).unwrap().others().len(), 32);
assert_eq!(EraInfo::<Test>::get_paged_exposure(2, &11, 1).unwrap().others().len(), 32);
assert_eq!(EraInfo::<Test>::get_paged_exposure(2, &11, 2).unwrap().others().len(), 32);
assert_eq!(EraInfo::<Test>::get_paged_exposure(2, &11, 3).unwrap().others().len(), 4);
// now lets decrease page size even more
MaxExposurePageSize::set(5);
mock::start_active_era(3);
// now we expect the max 20 pages (100/5).
assert_eq!(EraInfo::<Test>::get_page_count(3, &11), 20);
});
}
#[test]
fn payout_stakers_handles_basic_errors() {
// Here we will test payouts handle all errors.
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
// Consumed weight for all payout_stakers dispatches that fail
let err_weight = <Test as Config>::WeightInfo::payout_stakers_alive_staked(0);
// Same setup as the test above
let balance = 1000;
bond_validator(11, balance); // Default(64)
// Create nominators, targeting stash
for i in 0..100 {
bond_nominator(1000 + i, balance + i as Balance, vec![11]);
}
mock::start_active_era(1);
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
// Wrong Era, too big
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 2, 0),
Error::<Test>::InvalidEraToReward.with_weight(err_weight)
);
// Wrong Staker
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 10, 1, 0),
Error::<Test>::NotStash.with_weight(err_weight)
);
let last_era = 99;
for i in 3..=last_era {
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(i);
}
let history_depth = HistoryDepth::get();
let expected_last_reward_era = last_era - 1;
let expected_start_reward_era = last_era - history_depth;
// We are at era last_era=99. Given history_depth=80, we should be able
// to payout era starting from expected_start_reward_era=19 through
// expected_last_reward_era=98 (80 total eras), but not 18 or 99.
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_start_reward_era - 1,
0
),
Error::<Test>::InvalidEraToReward.with_weight(err_weight)
);
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era + 1,
0
),
Error::<Test>::InvalidEraToReward.with_weight(err_weight)
);
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_start_reward_era,
0
));
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era,
0
));
// can call page 1
assert_ok!(Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era,
1
));
// Can't claim again
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_start_reward_era,
0
),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era,
0
),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era,
1
),
Error::<Test>::AlreadyClaimed.with_weight(err_weight)
);
// invalid page
assert_noop!(
Staking::payout_stakers_by_page(
RuntimeOrigin::signed(1337),
11,
expected_last_reward_era,
2
),
Error::<Test>::InvalidPage.with_weight(err_weight)
);
});
}
#[test]
fn test_commission_paid_across_pages() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let balance = 1;
let commission = 50;
// Create a validator:
bond_validator(11, balance);
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(commission), blocked: false }
));
assert_eq!(Validators::<Test>::count(), 1);
// Create nominators, targeting stash of validators
for i in 0..200 {
let bond_amount = balance + i as Balance;
bond_nominator(1000 + i, bond_amount, vec![11]);
}
mock::start_active_era(1);
Staking::reward_by_ids(vec![(11, 1)]);
// Since `MaxExposurePageSize = 64`, there are four pages of validator
// exposure.
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 4);
// compute and ensure the reward amount is greater than zero.
let payout = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
let initial_balance = Balances::free_balance(&11);
// Payout rewards for first exposure page
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0));
let controller_balance_after_p0_payout = Balances::free_balance(&11);
// some commission is paid
assert!(initial_balance < controller_balance_after_p0_payout);
// payout all pages
for i in 1..4 {
let before_balance = Balances::free_balance(&11);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, i));
let after_balance = Balances::free_balance(&11);
// some commission is paid for every page
assert!(before_balance < after_balance);
}
assert_eq_error_rate!(Balances::free_balance(&11), initial_balance + payout / 2, 1,);
});
}
#[test]
fn payout_stakers_handles_weight_refund() {
// Note: this test relies on the assumption that `payout_stakers_alive_staked` is solely used by
// `payout_stakers` to calculate the weight of each payout op.
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let max_nom_rewarded = MaxExposurePageSize::get();
// Make sure the configured value is meaningful for our use.
assert!(max_nom_rewarded >= 4);
let half_max_nom_rewarded = max_nom_rewarded / 2;
// Sanity check our max and half max nominator quantities.
assert!(half_max_nom_rewarded > 0);
assert!(max_nom_rewarded > half_max_nom_rewarded);
let max_nom_rewarded_weight =
<Test as Config>::WeightInfo::payout_stakers_alive_staked(max_nom_rewarded);
let half_max_nom_rewarded_weight =
<Test as Config>::WeightInfo::payout_stakers_alive_staked(half_max_nom_rewarded);
let zero_nom_payouts_weight = <Test as Config>::WeightInfo::payout_stakers_alive_staked(0);
assert!(zero_nom_payouts_weight.any_gt(Weight::zero()));
assert!(half_max_nom_rewarded_weight.any_gt(zero_nom_payouts_weight));
assert!(max_nom_rewarded_weight.any_gt(half_max_nom_rewarded_weight));
let balance = 1000;
bond_validator(11, balance);
// Era 1
start_active_era(1);
// Reward just the validator.
Staking::reward_by_ids(vec![(11, 1)]);
// Add some `half_max_nom_rewarded` nominators who will start backing the validator in the
// next era.
for i in 0..half_max_nom_rewarded {
bond_nominator((1000 + i).into(), balance + i as Balance, vec![11]);
}
// Era 2
start_active_era(2);
// Collect payouts when there are no nominators
let call = TestCall::Staking(StakingCall::payout_stakers_by_page {
validator_stash: 11,
era: 1,
page: 0,
});
let info = call.get_dispatch_info();
let result = call.dispatch(RuntimeOrigin::signed(20));
assert_ok!(result);
assert_eq!(extract_actual_weight(&result, &info), zero_nom_payouts_weight);
// The validator is not rewarded in this era; so there will be zero payouts to claim for
// this era.
// Era 3
start_active_era(3);
// Collect payouts for an era where the validator did not receive any points.
let call = TestCall::Staking(StakingCall::payout_stakers_by_page {
validator_stash: 11,
era: 2,
page: 0,
});
let info = call.get_dispatch_info();
let result = call.dispatch(RuntimeOrigin::signed(20));
assert_ok!(result);
assert_eq!(extract_actual_weight(&result, &info), zero_nom_payouts_weight);
// Reward the validator and its nominators.
Staking::reward_by_ids(vec![(11, 1)]);
// Era 4
start_active_era(4);
// Collect payouts when the validator has `half_max_nom_rewarded` nominators.
let call = TestCall::Staking(StakingCall::payout_stakers_by_page {
validator_stash: 11,
era: 3,
page: 0,
});
let info = call.get_dispatch_info();
let result = call.dispatch(RuntimeOrigin::signed(20));
assert_ok!(result);
assert_eq!(extract_actual_weight(&result, &info), half_max_nom_rewarded_weight);
// Add enough nominators so that we are at the limit. They will be active nominators
// in the next era.
for i in half_max_nom_rewarded..max_nom_rewarded {
bond_nominator((1000 + i).into(), balance + i as Balance, vec![11]);
}
// Era 5
start_active_era(5);
// We now have `max_nom_rewarded` nominators actively nominating our validator.
// Reward the validator so we can collect for everyone in the next era.
Staking::reward_by_ids(vec![(11, 1)]);
// Era 6
start_active_era(6);
// Collect payouts when the validator had `half_max_nom_rewarded` nominators.
let call = TestCall::Staking(StakingCall::payout_stakers_by_page {
validator_stash: 11,
era: 5,
page: 0,
});
let info = call.get_dispatch_info();
let result = call.dispatch(RuntimeOrigin::signed(20));
assert_ok!(result);
assert_eq!(extract_actual_weight(&result, &info), max_nom_rewarded_weight);
// Try and collect payouts for an era that has already been collected.
let call = TestCall::Staking(StakingCall::payout_stakers_by_page {
validator_stash: 11,
era: 5,
page: 0,
});
let info = call.get_dispatch_info();
let result = call.dispatch(RuntimeOrigin::signed(20));
assert!(result.is_err());
// When there is an error the consumed weight == weight when there are 0 nominator payouts.
assert_eq!(extract_actual_weight(&result, &info), zero_nom_payouts_weight);
});
}
#[test]
fn bond_during_era_does_not_populate_legacy_claimed_rewards() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
// Era = None
bond_validator(9, 1000);
assert_eq!(
Staking::ledger(9.into()).unwrap(),
StakingLedgerInspect {
stash: 9,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
mock::start_active_era(5);
bond_validator(11, 1000);
assert_eq!(
Staking::ledger(11.into()).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// make sure only era upto history depth is stored
let current_era = 99;
mock::start_active_era(current_era);
bond_validator(13, 1000);
assert_eq!(
Staking::ledger(13.into()).unwrap(),
StakingLedgerInspect {
stash: 13,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: Default::default(),
}
);
});
}
#[test]
fn offences_weight_calculated_correctly() {
ExtBuilder::default().nominate(true).build_and_execute(|| {
// On offence with zero offenders: 4 Reads, 1 Write
let zero_offence_weight =
<Test as frame_system::Config>::DbWeight::get().reads_writes(4, 1);
assert_eq!(
Staking::on_offence(&[], &[Perbill::from_percent(50)], 0, DisableStrategy::WhenSlashed),
zero_offence_weight
);
// On Offence with N offenders, Unapplied: 4 Reads, 1 Write + 4 Reads, 5 Writes
let n_offence_unapplied_weight = <Test as frame_system::Config>::DbWeight::get()
.reads_writes(4, 1) +
<Test as frame_system::Config>::DbWeight::get().reads_writes(4, 5);
let offenders: Vec<
OffenceDetails<
<Test as frame_system::Config>::AccountId,
pallet_session::historical::IdentificationTuple<Test>,
>,
> = (1..10)
.map(|i| OffenceDetails {
offender: (i, Staking::eras_stakers(active_era(), &i)),
reporters: vec![],
})
.collect();
assert_eq!(
Staking::on_offence(
&offenders,
&[Perbill::from_percent(50)],
0,
DisableStrategy::WhenSlashed
),
n_offence_unapplied_weight
);
// On Offence with one offenders, Applied
let one_offender = [OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![1],
}];
let n = 1; // Number of offenders
let rw = 3 + 3 * n; // rw reads and writes
let one_offence_unapplied_weight =
<Test as frame_system::Config>::DbWeight::get().reads_writes(4, 1)
+
<Test as frame_system::Config>::DbWeight::get().reads_writes(rw, rw)
// One `slash_cost`
+ <Test as frame_system::Config>::DbWeight::get().reads_writes(6, 5)
// `slash_cost` * nominators (1)
+ <Test as frame_system::Config>::DbWeight::get().reads_writes(6, 5)
// `reward_cost` * reporters (1)
+ <Test as frame_system::Config>::DbWeight::get().reads_writes(2, 2)
;
assert_eq!(
Staking::on_offence(
&one_offender,
&[Perbill::from_percent(50)],
0,
DisableStrategy::WhenSlashed{}
),
one_offence_unapplied_weight
);
});
}
#[test]
fn payout_to_any_account_works() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
let balance = 1000;
// Create a validator:
bond_validator(11, balance); // Default(64)
// Create a stash/controller pair
bond_nominator(1234, 100, vec![11]);
// Update payout location
assert_ok!(Staking::set_payee(RuntimeOrigin::signed(1234), RewardDestination::Account(42)));
// Reward Destination account doesn't exist
assert_eq!(Balances::free_balance(42), 0);
mock::start_active_era(1);
Staking::reward_by_ids(vec![(11, 1)]);
// compute and ensure the reward amount is greater than zero.
let _ = current_total_payout_for_duration(reward_time_per_era());
mock::start_active_era(2);
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0));
// Payment is successful
assert!(Balances::free_balance(42) > 0);
})
}
#[test]
fn session_buffering_with_offset() {
// similar to live-chains, have some offset for the first session
ExtBuilder::default()
.offset(2)
.period(5)
.session_per_era(5)
.build_and_execute(|| {
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 0);
start_session(1);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 1);
assert_eq!(System::block_number(), 2);
start_session(2);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 2);
assert_eq!(System::block_number(), 7);
start_session(3);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 3);
assert_eq!(System::block_number(), 12);
// active era is lagging behind by one session, because of how session module works.
start_session(4);
assert_eq!(current_era(), 1);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 4);
assert_eq!(System::block_number(), 17);
start_session(5);
assert_eq!(current_era(), 1);
assert_eq!(active_era(), 1);
assert_eq!(Session::current_index(), 5);
assert_eq!(System::block_number(), 22);
// go all the way to active 2.
start_active_era(2);
assert_eq!(current_era(), 2);
assert_eq!(active_era(), 2);
assert_eq!(Session::current_index(), 10);
});
}
#[test]
fn session_buffering_no_offset() {
// no offset, first session starts immediately
ExtBuilder::default()
.offset(0)
.period(5)
.session_per_era(5)
.build_and_execute(|| {
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 0);
start_session(1);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 1);
assert_eq!(System::block_number(), 5);
start_session(2);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 2);
assert_eq!(System::block_number(), 10);
start_session(3);
assert_eq!(current_era(), 0);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 3);
assert_eq!(System::block_number(), 15);
// active era is lagging behind by one session, because of how session module works.
start_session(4);
assert_eq!(current_era(), 1);
assert_eq!(active_era(), 0);
assert_eq!(Session::current_index(), 4);
assert_eq!(System::block_number(), 20);
start_session(5);
assert_eq!(current_era(), 1);
assert_eq!(active_era(), 1);
assert_eq!(Session::current_index(), 5);
assert_eq!(System::block_number(), 25);
// go all the way to active 2.
start_active_era(2);
assert_eq!(current_era(), 2);
assert_eq!(active_era(), 2);
assert_eq!(Session::current_index(), 10);
});
}
#[test]
fn cannot_rebond_to_lower_than_ed() {
ExtBuilder::default()
.existential_deposit(11)
.balance_factor(11)
.build_and_execute(|| {
// initial stuff.
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: 11 * 1000,
active: 11 * 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// unbond all of it. must be chilled first.
assert_ok!(Staking::chill(RuntimeOrigin::signed(21)));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(21), 11 * 1000));
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: 11 * 1000,
active: 0,
unlocking: bounded_vec![UnlockChunk { value: 11 * 1000, era: 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// now bond a wee bit more
assert_noop!(
Staking::rebond(RuntimeOrigin::signed(21), 5),
Error::<Test>::InsufficientBond
);
})
}
#[test]
fn cannot_bond_extra_to_lower_than_ed() {
ExtBuilder::default()
.existential_deposit(11)
.balance_factor(11)
.build_and_execute(|| {
// initial stuff.
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: 11 * 1000,
active: 11 * 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// unbond all of it. must be chilled first.
assert_ok!(Staking::chill(RuntimeOrigin::signed(21)));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(21), 11 * 1000));
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: 11 * 1000,
active: 0,
unlocking: bounded_vec![UnlockChunk { value: 11 * 1000, era: 3 }],
legacy_claimed_rewards: bounded_vec![],
}
);
// now bond a wee bit more
assert_noop!(
Staking::bond_extra(RuntimeOrigin::signed(21), 5),
Error::<Test>::InsufficientBond,
);
})
}
#[test]
fn do_not_die_when_active_is_ed() {
let ed = 10;
ExtBuilder::default()
.existential_deposit(ed)
.balance_factor(ed)
.build_and_execute(|| {
// given
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: 1000 * ed,
active: 1000 * ed,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
// when unbond all of it except ed.
assert_ok!(Staking::unbond(RuntimeOrigin::signed(21), 999 * ed));
start_active_era(3);
assert_ok!(Staking::withdraw_unbonded(RuntimeOrigin::signed(21), 100));
// then
assert_eq!(
Staking::ledger(21.into()).unwrap(),
StakingLedgerInspect {
stash: 21,
total: ed,
active: ed,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![],
}
);
})
}
#[test]
fn on_finalize_weight_is_nonzero() {
ExtBuilder::default().build_and_execute(|| {
let on_finalize_weight = <Test as frame_system::Config>::DbWeight::get().reads(1);
assert!(<Staking as Hooks<u64>>::on_initialize(1).all_gte(on_finalize_weight));
})
}
mod election_data_provider {
use super::*;
use frame_election_provider_support::ElectionDataProvider;
#[test]
fn targets_2sec_block() {
let mut validators = 1000;
while <Test as Config>::WeightInfo::get_npos_targets(validators).all_lt(Weight::from_parts(
2u64 * frame_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND,
u64::MAX,
)) {
validators += 1;
}
println!("Can create a snapshot of {} validators in 2sec block", validators);
}
#[test]
fn voters_2sec_block() {
// we assume a network only wants up to 1000 validators in most cases, thus having 2000
// candidates is as high as it gets.
let validators = 2000;
let mut nominators = 1000;
while <Test as Config>::WeightInfo::get_npos_voters(validators, nominators).all_lt(
Weight::from_parts(
2u64 * frame_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND,
u64::MAX,
),
) {
nominators += 1;
}
println!(
"Can create a snapshot of {} nominators [{} validators, each 1 slashing] in 2sec block",
nominators, validators
);
}
#[test]
fn set_minimum_active_stake_is_correct() {
ExtBuilder::default()
.nominate(false)
.add_staker(61, 61, 2_000, StakerStatus::<AccountId>::Nominator(vec![21]))
.add_staker(71, 71, 10, StakerStatus::<AccountId>::Nominator(vec![21]))
.add_staker(81, 81, 50, StakerStatus::<AccountId>::Nominator(vec![21]))
.build_and_execute(|| {
// default bounds are unbounded.
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(
DataProviderBounds::default()
));
assert_eq!(MinimumActiveStake::<Test>::get(), 10);
// remove staker with lower bond by limiting the number of voters and check
// `MinimumActiveStake` again after electing voters.
let bounds = ElectionBoundsBuilder::default().voters_count(5.into()).build();
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(bounds.voters));
assert_eq!(MinimumActiveStake::<Test>::get(), 50);
});
}
#[test]
fn set_minimum_active_stake_lower_bond_works() {
// if there are no voters, minimum active stake is zero (should not happen).
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
// default bounds are unbounded.
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(
DataProviderBounds::default()
));
assert_eq!(<Test as Config>::VoterList::count(), 0);
assert_eq!(MinimumActiveStake::<Test>::get(), 0);
});
// lower non-zero active stake below `MinNominatorBond` is the minimum active stake if
// it is selected as part of the npos voters.
ExtBuilder::default().has_stakers(true).nominate(true).build_and_execute(|| {
assert_eq!(MinNominatorBond::<Test>::get(), 1);
assert_eq!(<Test as Config>::VoterList::count(), 4);
assert_ok!(Staking::bond(RuntimeOrigin::signed(4), 5, Default::default(),));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(4), vec![1]));
assert_eq!(<Test as Config>::VoterList::count(), 5);
let voters_before =
<Staking as ElectionDataProvider>::electing_voters(DataProviderBounds::default())
.unwrap();
assert_eq!(MinimumActiveStake::<Test>::get(), 5);
// update minimum nominator bond.
MinNominatorBond::<Test>::set(10);
assert_eq!(MinNominatorBond::<Test>::get(), 10);
// voter list still considers nominator 4 for voting, even though its active stake is
// lower than `MinNominatorBond`.
assert_eq!(<Test as Config>::VoterList::count(), 5);
let voters =
<Staking as ElectionDataProvider>::electing_voters(DataProviderBounds::default())
.unwrap();
assert_eq!(voters_before, voters);
// minimum active stake is lower than `MinNominatorBond`.
assert_eq!(MinimumActiveStake::<Test>::get(), 5);
});
}
#[test]
fn set_minimum_active_bond_corrupt_state() {
ExtBuilder::default()
.has_stakers(true)
.nominate(true)
.add_staker(61, 61, 2_000, StakerStatus::<AccountId>::Nominator(vec![21]))
.build_and_execute(|| {
assert_eq!(Staking::weight_of(&101), 500);
let voters = <Staking as ElectionDataProvider>::electing_voters(
DataProviderBounds::default(),
)
.unwrap();
assert_eq!(voters.len(), 5);
assert_eq!(MinimumActiveStake::<Test>::get(), 500);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(101), 200));
start_active_era(10);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(101), 100));
start_active_era(20);
// corrupt ledger state by lowering max unlocking chunks bounds.
MaxUnlockingChunks::set(1);
let voters = <Staking as ElectionDataProvider>::electing_voters(
DataProviderBounds::default(),
)
.unwrap();
// number of returned voters decreases since ledger entry of stash 101 is now
// corrupt.
assert_eq!(voters.len(), 4);
// minimum active stake does not take into consideration the corrupt entry.
assert_eq!(MinimumActiveStake::<Test>::get(), 2_000);
// voter weight of corrupted ledger entry is 0.
assert_eq!(Staking::weight_of(&101), 0);
// reset max unlocking chunks for try_state to pass.
MaxUnlockingChunks::set(32);
})
}
#[test]
fn voters_include_self_vote() {
ExtBuilder::default().nominate(false).build_and_execute(|| {
// default bounds are unbounded.
assert!(<Validators<Test>>::iter().map(|(x, _)| x).all(|v| Staking::electing_voters(
DataProviderBounds::default()
)
.unwrap()
.into_iter()
.any(|(w, _, t)| { v == w && t[0] == w })))
})
}
// Tests the criteria that in `ElectionDataProvider::voters` function, we try to get at most
// `maybe_max_len` voters, and if some of them end up being skipped, we iterate at most `2 *
// maybe_max_len`.
#[test]
#[should_panic]
fn only_iterates_max_2_times_max_allowed_len() {
ExtBuilder::default()
.nominate(false)
// the best way to invalidate a bunch of nominators is to have them nominate a lot of
// ppl, but then lower the MaxNomination limit.
.add_staker(
61,
61,
2_000,
StakerStatus::<AccountId>::Nominator(vec![21, 22, 23, 24, 25]),
)
.add_staker(
71,
71,
2_000,
StakerStatus::<AccountId>::Nominator(vec![21, 22, 23, 24, 25]),
)
.add_staker(
81,
81,
2_000,
StakerStatus::<AccountId>::Nominator(vec![21, 22, 23, 24, 25]),
)
.build_and_execute(|| {
let bounds_builder = ElectionBoundsBuilder::default();
// all voters ordered by stake,
assert_eq!(
<Test as Config>::VoterList::iter().collect::<Vec<_>>(),
vec![61, 71, 81, 11, 21, 31]
);
AbsoluteMaxNominations::set(2);
// we want 2 voters now, and in maximum we allow 4 iterations. This is what happens:
// 61 is pruned;
// 71 is pruned;
// 81 is pruned;
// 11 is taken;
// we finish since the 2x limit is reached.
assert_eq!(
Staking::electing_voters(bounds_builder.voters_count(2.into()).build().voters)
.unwrap()
.iter()
.map(|(stash, _, _)| stash)
.copied()
.collect::<Vec<_>>(),
vec![11],
);
});
}
#[test]
fn respects_snapshot_count_limits() {
ExtBuilder::default()
.set_status(41, StakerStatus::Validator)
.build_and_execute(|| {
// sum of all nominators who'd be voters (1), plus the self-votes (4).
assert_eq!(<Test as Config>::VoterList::count(), 5);
let bounds_builder = ElectionBoundsBuilder::default();
// if voter count limit is less..
assert_eq!(
Staking::electing_voters(bounds_builder.voters_count(1.into()).build().voters)
.unwrap()
.len(),
1
);
// if voter count limit is equal..
assert_eq!(
Staking::electing_voters(bounds_builder.voters_count(5.into()).build().voters)
.unwrap()
.len(),
5
);
// if voter count limit is more.
assert_eq!(
Staking::electing_voters(bounds_builder.voters_count(55.into()).build().voters)
.unwrap()
.len(),
5
);
// if target count limit is more..
assert_eq!(
Staking::electable_targets(
bounds_builder.targets_count(6.into()).build().targets
)
.unwrap()
.len(),
4
);
// if target count limit is equal..
assert_eq!(
Staking::electable_targets(
bounds_builder.targets_count(4.into()).build().targets
)
.unwrap()
.len(),
4
);
// if target limit count is less, then we return an error.
assert_eq!(
Staking::electable_targets(
bounds_builder.targets_count(1.into()).build().targets
)
.unwrap_err(),
"Target snapshot too big"
);
});
}
#[test]
fn respects_snapshot_size_limits() {
ExtBuilder::default().build_and_execute(|| {
// voters: set size bounds that allows only for 1 voter.
let bounds = ElectionBoundsBuilder::default().voters_size(26.into()).build();
let elected = Staking::electing_voters(bounds.voters).unwrap();
assert!(elected.encoded_size() == 26 as usize);
let prev_len = elected.len();
// larger size bounds means more quota for voters.
let bounds = ElectionBoundsBuilder::default().voters_size(100.into()).build();
let elected = Staking::electing_voters(bounds.voters).unwrap();
assert!(elected.encoded_size() <= 100 as usize);
assert!(elected.len() > 1 && elected.len() > prev_len);
// targets: set size bounds that allows for only one target to fit in the snapshot.
let bounds = ElectionBoundsBuilder::default().targets_size(10.into()).build();
let elected = Staking::electable_targets(bounds.targets).unwrap();
assert!(elected.encoded_size() == 9 as usize);
let prev_len = elected.len();
// larger size bounds means more space for targets.
let bounds = ElectionBoundsBuilder::default().targets_size(100.into()).build();
let elected = Staking::electable_targets(bounds.targets).unwrap();
assert!(elected.encoded_size() <= 100 as usize);
assert!(elected.len() > 1 && elected.len() > prev_len);
});
}
#[test]
fn nomination_quota_checks_at_nominate_works() {
ExtBuilder::default().nominate(false).build_and_execute(|| {
// stash bond of 222 has a nomination quota of 2 targets.
bond(61, 222);
assert_eq!(Staking::api_nominations_quota(222), 2);
// nominating with targets below the nomination quota works.
assert_ok!(Staking::nominate(RuntimeOrigin::signed(61), vec![11]));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(61), vec![11, 12]));
// nominating with targets above the nomination quota returns error.
assert_noop!(
Staking::nominate(RuntimeOrigin::signed(61), vec![11, 12, 13]),
Error::<Test>::TooManyTargets
);
});
}
#[test]
fn lazy_quota_npos_voters_works_above_quota() {
ExtBuilder::default()
.nominate(false)
.add_staker(
61,
60,
300, // 300 bond has 16 nomination quota.
StakerStatus::<AccountId>::Nominator(vec![21, 22, 23, 24, 25]),
)
.build_and_execute(|| {
// unbond 78 from stash 60 so that it's bonded balance is 222, which has a lower
// nomination quota than at nomination time (max 2 targets).
assert_ok!(Staking::unbond(RuntimeOrigin::signed(61), 78));
assert_eq!(Staking::api_nominations_quota(300 - 78), 2);
// even through 61 has nomination quota of 2 at the time of the election, all the
// nominations (5) will be used.
assert_eq!(
Staking::electing_voters(DataProviderBounds::default())
.unwrap()
.iter()
.map(|(stash, _, targets)| (*stash, targets.len()))
.collect::<Vec<_>>(),
vec![(11, 1), (21, 1), (31, 1), (61, 5)],
);
});
}
#[test]
fn nominations_quota_limits_size_work() {
ExtBuilder::default()
.nominate(false)
.add_staker(
71,
70,
333,
StakerStatus::<AccountId>::Nominator(vec![16, 15, 14, 13, 12, 11, 10]),
)
.build_and_execute(|| {
// nominations of controller 70 won't be added due to voter size limit exceeded.
let bounds = ElectionBoundsBuilder::default().voters_size(100.into()).build();
assert_eq!(
Staking::electing_voters(bounds.voters)
.unwrap()
.iter()
.map(|(stash, _, targets)| (*stash, targets.len()))
.collect::<Vec<_>>(),
vec![(11, 1), (21, 1), (31, 1)],
);
assert_eq!(
*staking_events().last().unwrap(),
Event::SnapshotVotersSizeExceeded { size: 75 }
);
// however, if the election voter size bounds were largers, the snapshot would
// include the electing voters of 70.
let bounds = ElectionBoundsBuilder::default().voters_size(1_000.into()).build();
assert_eq!(
Staking::electing_voters(bounds.voters)
.unwrap()
.iter()
.map(|(stash, _, targets)| (*stash, targets.len()))
.collect::<Vec<_>>(),
vec![(11, 1), (21, 1), (31, 1), (71, 7)],
);
});
}
#[test]
fn estimate_next_election_works() {
ExtBuilder::default().session_per_era(5).period(5).build_and_execute(|| {
// first session is always length 0.
for b in 1..20 {
run_to_block(b);
assert_eq!(Staking::next_election_prediction(System::block_number()), 20);
}
// election
run_to_block(20);
assert_eq!(Staking::next_election_prediction(System::block_number()), 45);
assert_eq!(staking_events().len(), 1);
assert_eq!(*staking_events().last().unwrap(), Event::StakersElected);
for b in 21..45 {
run_to_block(b);
assert_eq!(Staking::next_election_prediction(System::block_number()), 45);
}
// election
run_to_block(45);
assert_eq!(Staking::next_election_prediction(System::block_number()), 70);
assert_eq!(staking_events().len(), 3);
assert_eq!(*staking_events().last().unwrap(), Event::StakersElected);
Staking::force_no_eras(RuntimeOrigin::root()).unwrap();
assert_eq!(Staking::next_election_prediction(System::block_number()), u64::MAX);
Staking::force_new_era_always(RuntimeOrigin::root()).unwrap();
assert_eq!(Staking::next_election_prediction(System::block_number()), 45 + 5);
Staking::force_new_era(RuntimeOrigin::root()).unwrap();
assert_eq!(Staking::next_election_prediction(System::block_number()), 45 + 5);
// Do a fail election
MinimumValidatorCount::<Test>::put(1000);
run_to_block(50);
// Election: failed, next session is a new election
assert_eq!(Staking::next_election_prediction(System::block_number()), 50 + 5);
// The new era is still forced until a new era is planned.
assert_eq!(ForceEra::<Test>::get(), Forcing::ForceNew);
MinimumValidatorCount::<Test>::put(2);
run_to_block(55);
assert_eq!(Staking::next_election_prediction(System::block_number()), 55 + 25);
assert_eq!(staking_events().len(), 10);
assert_eq!(
*staking_events().last().unwrap(),
Event::ForceEra { mode: Forcing::NotForcing }
);
assert_eq!(
*staking_events().get(staking_events().len() - 2).unwrap(),
Event::StakersElected
);
// The new era has been planned, forcing is changed from `ForceNew` to `NotForcing`.
assert_eq!(ForceEra::<Test>::get(), Forcing::NotForcing);
})
}
}
#[test]
#[should_panic]
fn count_check_works() {
ExtBuilder::default().build_and_execute(|| {
// We should never insert into the validators or nominators map directly as this will
// not keep track of the count. This test should panic as we verify the count is accurate
// after every test using the `post_checks` in `mock`.
Validators::<Test>::insert(987654321, ValidatorPrefs::default());
Nominators::<Test>::insert(
987654321,
Nominations {
targets: Default::default(),
submitted_in: Default::default(),
suppressed: false,
},
);
})
}
#[test]
fn min_bond_checks_work() {
ExtBuilder::default()
.existential_deposit(100)
.balance_factor(100)
.min_nominator_bond(1_000)
.min_validator_bond(1_500)
.build_and_execute(|| {
// 500 is not enough for any role
assert_ok!(Staking::bond(RuntimeOrigin::signed(3), 500, RewardDestination::Stash));
assert_noop!(
Staking::nominate(RuntimeOrigin::signed(3), vec![1]),
Error::<Test>::InsufficientBond
);
assert_noop!(
Staking::validate(RuntimeOrigin::signed(3), ValidatorPrefs::default()),
Error::<Test>::InsufficientBond,
);
// 1000 is enough for nominator
assert_ok!(Staking::bond_extra(RuntimeOrigin::signed(3), 500));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![1]));
assert_noop!(
Staking::validate(RuntimeOrigin::signed(3), ValidatorPrefs::default()),
Error::<Test>::InsufficientBond,
);
// 1500 is enough for validator
assert_ok!(Staking::bond_extra(RuntimeOrigin::signed(3), 500));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![1]));
assert_ok!(Staking::validate(RuntimeOrigin::signed(3), ValidatorPrefs::default()));
// Can't unbond anything as validator
assert_noop!(
Staking::unbond(RuntimeOrigin::signed(3), 500),
Error::<Test>::InsufficientBond
);
// Once they are a nominator, they can unbond 500
assert_ok!(Staking::nominate(RuntimeOrigin::signed(3), vec![1]));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(3), 500));
assert_noop!(
Staking::unbond(RuntimeOrigin::signed(3), 500),
Error::<Test>::InsufficientBond
);
// Once they are chilled they can unbond everything
assert_ok!(Staking::chill(RuntimeOrigin::signed(3)));
assert_ok!(Staking::unbond(RuntimeOrigin::signed(3), 1000));
})
}
#[test]
fn chill_other_works() {
ExtBuilder::default()
.existential_deposit(100)
.balance_factor(100)
.min_nominator_bond(1_000)
.min_validator_bond(1_500)
.build_and_execute(|| {
let initial_validators = Validators::<Test>::count();
let initial_nominators = Nominators::<Test>::count();
for i in 0..15 {
let a = 4 * i;
let b = 4 * i + 2;
let c = 4 * i + 3;
Balances::make_free_balance_be(&a, 100_000);
Balances::make_free_balance_be(&b, 100_000);
Balances::make_free_balance_be(&c, 100_000);
// Nominator
assert_ok!(Staking::bond(RuntimeOrigin::signed(a), 1000, RewardDestination::Stash));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(a), vec![1]));
// Validator
assert_ok!(Staking::bond(RuntimeOrigin::signed(b), 1500, RewardDestination::Stash));
assert_ok!(Staking::validate(RuntimeOrigin::signed(b), ValidatorPrefs::default()));
}
// To chill other users, we need to:
// * Set a minimum bond amount
// * Set a limit
// * Set a threshold
//
// If any of these are missing, we do not have enough information to allow the
// `chill_other` to succeed from one user to another.
// Can't chill these users
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 0),
Error::<Test>::CannotChillOther
);
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 2),
Error::<Test>::CannotChillOther
);
// Change the minimum bond... but no limits.
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Set(1_500),
ConfigOp::Set(2_000),
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove
));
// Still can't chill these users
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 0),
Error::<Test>::CannotChillOther
);
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 2),
Error::<Test>::CannotChillOther
);
// Add limits, but no threshold
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Set(10),
ConfigOp::Set(10),
ConfigOp::Noop,
ConfigOp::Noop
));
// Still can't chill these users
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 0),
Error::<Test>::CannotChillOther
);
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 2),
Error::<Test>::CannotChillOther
);
// Add threshold, but no limits
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Noop,
ConfigOp::Noop
));
// Still can't chill these users
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 0),
Error::<Test>::CannotChillOther
);
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 2),
Error::<Test>::CannotChillOther
);
// Add threshold and limits
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Set(10),
ConfigOp::Set(10),
ConfigOp::Set(Percent::from_percent(75)),
ConfigOp::Noop
));
// 16 people total because tests start with 2 active one
assert_eq!(Nominators::<Test>::count(), 15 + initial_nominators);
assert_eq!(Validators::<Test>::count(), 15 + initial_validators);
// Users can now be chilled down to 7 people, so we try to remove 9 of them (starting
// with 16)
for i in 6..15 {
let b = 4 * i;
let d = 4 * i + 2;
assert_ok!(Staking::chill_other(RuntimeOrigin::signed(1337), b));
assert_ok!(Staking::chill_other(RuntimeOrigin::signed(1337), d));
}
// chill a nominator. Limit is not reached, not chill-able
assert_eq!(Nominators::<Test>::count(), 7);
assert_noop!(
Staking::chill_other(RuntimeOrigin::signed(1337), 0),
Error::<Test>::CannotChillOther
);
// chill a validator. Limit is reached, chill-able.
assert_eq!(Validators::<Test>::count(), 9);
assert_ok!(Staking::chill_other(RuntimeOrigin::signed(1337), 2));
})
}
#[test]
fn capped_stakers_works() {
ExtBuilder::default().build_and_execute(|| {
let validator_count = Validators::<Test>::count();
assert_eq!(validator_count, 3);
let nominator_count = Nominators::<Test>::count();
assert_eq!(nominator_count, 1);
// Change the maximums
let max = 10;
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Set(10),
ConfigOp::Set(10),
ConfigOp::Set(max),
ConfigOp::Set(max),
ConfigOp::Remove,
ConfigOp::Remove,
));
// can create `max - validator_count` validators
let mut some_existing_validator = AccountId::default();
for i in 0..max - validator_count {
let (_, controller) = testing_utils::create_stash_controller::<Test>(
i + 10_000_000,
100,
RewardDestination::Stash,
)
.unwrap();
assert_ok!(Staking::validate(
RuntimeOrigin::signed(controller),
ValidatorPrefs::default()
));
some_existing_validator = controller;
}
// but no more
let (_, last_validator) =
testing_utils::create_stash_controller::<Test>(1337, 100, RewardDestination::Stash)
.unwrap();
assert_noop!(
Staking::validate(RuntimeOrigin::signed(last_validator), ValidatorPrefs::default()),
Error::<Test>::TooManyValidators,
);
// same with nominators
let mut some_existing_nominator = AccountId::default();
for i in 0..max - nominator_count {
let (_, controller) = testing_utils::create_stash_controller::<Test>(
i + 20_000_000,
100,
RewardDestination::Stash,
)
.unwrap();
assert_ok!(Staking::nominate(RuntimeOrigin::signed(controller), vec![1]));
some_existing_nominator = controller;
}
// one more is too many.
let (_, last_nominator) = testing_utils::create_stash_controller::<Test>(
30_000_000,
100,
RewardDestination::Stash,
)
.unwrap();
assert_noop!(
Staking::nominate(RuntimeOrigin::signed(last_nominator), vec![1]),
Error::<Test>::TooManyNominators
);
// Re-nominate works fine
assert_ok!(Staking::nominate(RuntimeOrigin::signed(some_existing_nominator), vec![1]));
// Re-validate works fine
assert_ok!(Staking::validate(
RuntimeOrigin::signed(some_existing_validator),
ValidatorPrefs::default()
));
// No problem when we set to `None` again
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Noop,
ConfigOp::Noop,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Noop,
ConfigOp::Noop,
));
assert_ok!(Staking::nominate(RuntimeOrigin::signed(last_nominator), vec![1]));
assert_ok!(Staking::validate(
RuntimeOrigin::signed(last_validator),
ValidatorPrefs::default()
));
})
}
#[test]
fn min_commission_works() {
ExtBuilder::default().build_and_execute(|| {
// account 11 controls the stash of itself.
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(5), blocked: false }
));
// event emitted should be correct
assert_eq!(
*staking_events().last().unwrap(),
Event::ValidatorPrefsSet {
stash: 11,
prefs: ValidatorPrefs { commission: Perbill::from_percent(5), blocked: false }
}
);
assert_ok!(Staking::set_staking_configs(
RuntimeOrigin::root(),
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Remove,
ConfigOp::Set(Perbill::from_percent(10)),
));
// can't make it less than 10 now
assert_noop!(
Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(5), blocked: false }
),
Error::<Test>::CommissionTooLow
);
// can only change to higher.
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(10), blocked: false }
));
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(15), blocked: false }
));
})
}
#[test]
#[should_panic]
fn change_of_absolute_max_nominations() {
use frame_election_provider_support::ElectionDataProvider;
ExtBuilder::default()
.add_staker(61, 61, 10, StakerStatus::Nominator(vec![1]))
.add_staker(71, 71, 10, StakerStatus::Nominator(vec![1, 2, 3]))
.balance_factor(10)
.build_and_execute(|| {
// pre-condition
assert_eq!(AbsoluteMaxNominations::get(), 16);
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(101, 2), (71, 3), (61, 1)]
);
// default bounds are unbounded.
let bounds = DataProviderBounds::default();
// 3 validators and 3 nominators
assert_eq!(Staking::electing_voters(bounds).unwrap().len(), 3 + 3);
// abrupt change from 16 to 4, everyone should be fine.
AbsoluteMaxNominations::set(4);
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(101, 2), (71, 3), (61, 1)]
);
assert_eq!(Staking::electing_voters(bounds).unwrap().len(), 3 + 3);
// abrupt change from 4 to 3, everyone should be fine.
AbsoluteMaxNominations::set(3);
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(101, 2), (71, 3), (61, 1)]
);
assert_eq!(Staking::electing_voters(bounds).unwrap().len(), 3 + 3);
// abrupt change from 3 to 2, this should cause some nominators to be non-decodable, and
// thus non-existent unless if they update.
AbsoluteMaxNominations::set(2);
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(101, 2), (61, 1)]
);
// 70 is still in storage..
assert!(Nominators::<Test>::contains_key(71));
// but its value cannot be decoded and default is returned.
assert!(Nominators::<Test>::get(71).is_none());
assert_eq!(Staking::electing_voters(bounds).unwrap().len(), 3 + 2);
assert!(Nominators::<Test>::contains_key(101));
// abrupt change from 2 to 1, this should cause some nominators to be non-decodable, and
// thus non-existent unless if they update.
AbsoluteMaxNominations::set(1);
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(61, 1)]
);
assert!(Nominators::<Test>::contains_key(71));
assert!(Nominators::<Test>::contains_key(61));
assert!(Nominators::<Test>::get(71).is_none());
assert!(Nominators::<Test>::get(61).is_some());
assert_eq!(Staking::electing_voters(bounds).unwrap().len(), 3 + 1);
// now one of them can revive themselves by re-nominating to a proper value.
assert_ok!(Staking::nominate(RuntimeOrigin::signed(71), vec![1]));
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(71, 1), (61, 1)]
);
// or they can be chilled by any account.
assert!(Nominators::<Test>::contains_key(101));
assert!(Nominators::<Test>::get(101).is_none());
assert_ok!(Staking::chill_other(RuntimeOrigin::signed(71), 101));
assert!(!Nominators::<Test>::contains_key(101));
assert!(Nominators::<Test>::get(101).is_none());
})
}
#[test]
fn nomination_quota_max_changes_decoding() {
use frame_election_provider_support::ElectionDataProvider;
ExtBuilder::default()
.add_staker(60, 61, 10, StakerStatus::Nominator(vec![1]))
.add_staker(70, 71, 10, StakerStatus::Nominator(vec![1, 2, 3]))
.add_staker(30, 330, 10, StakerStatus::Nominator(vec![1, 2, 3, 4]))
.add_staker(50, 550, 10, StakerStatus::Nominator(vec![1, 2, 3, 4]))
.balance_factor(10)
.build_and_execute(|| {
// pre-condition.
assert_eq!(MaxNominationsOf::<Test>::get(), 16);
let unbonded_election = DataProviderBounds::default();
assert_eq!(
Nominators::<Test>::iter()
.map(|(k, n)| (k, n.targets.len()))
.collect::<Vec<_>>(),
vec![(70, 3), (101, 2), (50, 4), (30, 4), (60, 1)]
);
// 4 validators and 4 nominators
assert_eq!(Staking::electing_voters(unbonded_election).unwrap().len(), 4 + 4);
});
}
#[test]
fn api_nominations_quota_works() {
ExtBuilder::default().build_and_execute(|| {
assert_eq!(Staking::api_nominations_quota(10), MaxNominationsOf::<Test>::get());
assert_eq!(Staking::api_nominations_quota(333), MaxNominationsOf::<Test>::get());
assert_eq!(Staking::api_nominations_quota(222), 2);
assert_eq!(Staking::api_nominations_quota(111), 1);
})
}
mod sorted_list_provider {
use super::*;
use frame_election_provider_support::SortedListProvider;
#[test]
fn re_nominate_does_not_change_counters_or_list() {
ExtBuilder::default().nominate(true).build_and_execute(|| {
// given
let pre_insert_voter_count =
(Nominators::<Test>::count() + Validators::<Test>::count()) as u32;
assert_eq!(<Test as Config>::VoterList::count(), pre_insert_voter_count);
assert_eq!(
<Test as Config>::VoterList::iter().collect::<Vec<_>>(),
vec![11, 21, 31, 101]
);
// when account 101 renominates
assert_ok!(Staking::nominate(RuntimeOrigin::signed(101), vec![41]));
// then counts don't change
assert_eq!(<Test as Config>::VoterList::count(), pre_insert_voter_count);
// and the list is the same
assert_eq!(
<Test as Config>::VoterList::iter().collect::<Vec<_>>(),
vec![11, 21, 31, 101]
);
});
}
#[test]
fn re_validate_does_not_change_counters_or_list() {
ExtBuilder::default().nominate(false).build_and_execute(|| {
// given
let pre_insert_voter_count =
(Nominators::<Test>::count() + Validators::<Test>::count()) as u32;
assert_eq!(<Test as Config>::VoterList::count(), pre_insert_voter_count);
assert_eq!(<Test as Config>::VoterList::iter().collect::<Vec<_>>(), vec![11, 21, 31]);
// when account 11 re-validates
assert_ok!(Staking::validate(RuntimeOrigin::signed(11), Default::default()));
// then counts don't change
assert_eq!(<Test as Config>::VoterList::count(), pre_insert_voter_count);
// and the list is the same
assert_eq!(<Test as Config>::VoterList::iter().collect::<Vec<_>>(), vec![11, 21, 31]);
});
}
}
#[test]
fn force_apply_min_commission_works() {
let prefs = |c| ValidatorPrefs { commission: Perbill::from_percent(c), blocked: false };
let validators = || Validators::<Test>::iter().collect::<Vec<_>>();
ExtBuilder::default().build_and_execute(|| {
assert_ok!(Staking::validate(RuntimeOrigin::signed(31), prefs(10)));
assert_ok!(Staking::validate(RuntimeOrigin::signed(21), prefs(5)));
// Given
assert_eq!(validators(), vec![(31, prefs(10)), (21, prefs(5)), (11, prefs(0))]);
MinCommission::<Test>::set(Perbill::from_percent(5));
// When applying to a commission greater than min
assert_ok!(Staking::force_apply_min_commission(RuntimeOrigin::signed(1), 31));
// Then the commission is not changed
assert_eq!(validators(), vec![(31, prefs(10)), (21, prefs(5)), (11, prefs(0))]);
// When applying to a commission that is equal to min
assert_ok!(Staking::force_apply_min_commission(RuntimeOrigin::signed(1), 21));
// Then the commission is not changed
assert_eq!(validators(), vec![(31, prefs(10)), (21, prefs(5)), (11, prefs(0))]);
// When applying to a commission that is less than the min
assert_ok!(Staking::force_apply_min_commission(RuntimeOrigin::signed(1), 11));
// Then the commission is bumped to the min
assert_eq!(validators(), vec![(31, prefs(10)), (21, prefs(5)), (11, prefs(5))]);
// When applying commission to a validator that doesn't exist then storage is not altered
assert_noop!(
Staking::force_apply_min_commission(RuntimeOrigin::signed(1), 420),
Error::<Test>::NotStash
);
});
}
#[test]
fn proportional_slash_stop_slashing_if_remaining_zero() {
let c = |era, value| UnlockChunk::<Balance> { era, value };
// we have some chunks, but they are not affected.
let unlocking = bounded_vec![c(1, 10), c(2, 10)];
// Given
let mut ledger = StakingLedger::<Test>::new(123, 20);
ledger.total = 40;
ledger.unlocking = unlocking;
assert_eq!(BondingDuration::get(), 3);
// should not slash more than the amount requested, by accidentally slashing the first chunk.
assert_eq!(ledger.slash(18, 1, 0), 18);
}
#[test]
fn proportional_ledger_slash_works() {
let c = |era, value| UnlockChunk::<Balance> { era, value };
// Given
let mut ledger = StakingLedger::<Test>::new(123, 10);
assert_eq!(BondingDuration::get(), 3);
// When we slash a ledger with no unlocking chunks
assert_eq!(ledger.slash(5, 1, 0), 5);
// Then
assert_eq!(ledger.total, 5);
assert_eq!(ledger.active, 5);
assert_eq!(LedgerSlashPerEra::get().0, 5);
assert_eq!(LedgerSlashPerEra::get().1, Default::default());
// When we slash a ledger with no unlocking chunks and the slash amount is greater then the
// total
assert_eq!(ledger.slash(11, 1, 0), 5);
// Then
assert_eq!(ledger.total, 0);
assert_eq!(ledger.active, 0);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, Default::default());
// Given
ledger.unlocking = bounded_vec![c(4, 10), c(5, 10)];
ledger.total = 2 * 10;
ledger.active = 0;
// When all the chunks overlap with the slash eras
assert_eq!(ledger.slash(20, 0, 0), 20);
// Then
assert_eq!(ledger.unlocking, vec![]);
assert_eq!(ledger.total, 0);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(4, 0), (5, 0)]));
// Given
ledger.unlocking = bounded_vec![c(4, 100), c(5, 100), c(6, 100), c(7, 100)];
ledger.total = 4 * 100;
ledger.active = 0;
// When the first 2 chunks don't overlap with the affected range of unlock eras.
assert_eq!(ledger.slash(140, 0, 3), 140);
// Then
assert_eq!(ledger.unlocking, vec![c(4, 100), c(5, 100), c(6, 30), c(7, 30)]);
assert_eq!(ledger.total, 4 * 100 - 140);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(6, 30), (7, 30)]));
// Given
ledger.unlocking = bounded_vec![c(4, 100), c(5, 100), c(6, 100), c(7, 100)];
ledger.total = 4 * 100;
ledger.active = 0;
// When the first 2 chunks don't overlap with the affected range of unlock eras.
assert_eq!(ledger.slash(15, 0, 3), 15);
// Then
assert_eq!(ledger.unlocking, vec![c(4, 100), c(5, 100), c(6, 100 - 8), c(7, 100 - 7)]);
assert_eq!(ledger.total, 4 * 100 - 15);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(6, 92), (7, 93)]));
// Given
ledger.unlocking = bounded_vec![c(4, 40), c(5, 100), c(6, 10), c(7, 250)];
ledger.active = 500;
// 900
ledger.total = 40 + 10 + 100 + 250 + 500;
// When we have a partial slash that touches all chunks
assert_eq!(ledger.slash(900 / 2, 0, 0), 450);
// Then
assert_eq!(ledger.active, 500 / 2);
assert_eq!(ledger.unlocking, vec![c(4, 40 / 2), c(5, 100 / 2), c(6, 10 / 2), c(7, 250 / 2)]);
assert_eq!(ledger.total, 900 / 2);
assert_eq!(LedgerSlashPerEra::get().0, 500 / 2);
assert_eq!(
LedgerSlashPerEra::get().1,
BTreeMap::from([(4, 40 / 2), (5, 100 / 2), (6, 10 / 2), (7, 250 / 2)])
);
// slash 1/4th with not chunk.
ledger.unlocking = bounded_vec![];
ledger.active = 500;
ledger.total = 500;
// When we have a partial slash that touches all chunks
assert_eq!(ledger.slash(500 / 4, 0, 0), 500 / 4);
// Then
assert_eq!(ledger.active, 3 * 500 / 4);
assert_eq!(ledger.unlocking, vec![]);
assert_eq!(ledger.total, ledger.active);
assert_eq!(LedgerSlashPerEra::get().0, 3 * 500 / 4);
assert_eq!(LedgerSlashPerEra::get().1, Default::default());
// Given we have the same as above,
ledger.unlocking = bounded_vec![c(4, 40), c(5, 100), c(6, 10), c(7, 250)];
ledger.active = 500;
ledger.total = 40 + 10 + 100 + 250 + 500; // 900
assert_eq!(ledger.total, 900);
// When we have a higher min balance
assert_eq!(
ledger.slash(
900 / 2,
25, /* min balance - chunks with era 0 & 2 will be slashed to <=25, causing it to
* get swept */
0
),
450
);
assert_eq!(ledger.active, 500 / 2);
// the last chunk was not slashed 50% like all the rest, because some other earlier chunks got
// dusted.
assert_eq!(ledger.unlocking, vec![c(5, 100 / 2), c(7, 150)]);
assert_eq!(ledger.total, 900 / 2);
assert_eq!(LedgerSlashPerEra::get().0, 500 / 2);
assert_eq!(
LedgerSlashPerEra::get().1,
BTreeMap::from([(4, 0), (5, 100 / 2), (6, 0), (7, 150)])
);
// Given
// slash order --------------------NA--------2----------0----------1----
ledger.unlocking = bounded_vec![c(4, 40), c(5, 100), c(6, 10), c(7, 250)];
ledger.active = 500;
ledger.total = 40 + 10 + 100 + 250 + 500; // 900
assert_eq!(
ledger.slash(
500 + 10 + 250 + 100 / 2, // active + era 6 + era 7 + era 5 / 2
0,
3 /* slash era 6 first, so the affected parts are era 6, era 7 and
* ledge.active. This will cause the affected to go to zero, and then we will
* start slashing older chunks */
),
500 + 250 + 10 + 100 / 2
);
// Then
assert_eq!(ledger.active, 0);
assert_eq!(ledger.unlocking, vec![c(4, 40), c(5, 100 / 2)]);
assert_eq!(ledger.total, 90);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(5, 100 / 2), (6, 0), (7, 0)]));
// Given
// iteration order------------------NA---------2----------0----------1----
ledger.unlocking = bounded_vec![c(4, 100), c(5, 100), c(6, 100), c(7, 100)];
ledger.active = 100;
ledger.total = 5 * 100;
// When
assert_eq!(
ledger.slash(
351, // active + era 6 + era 7 + era 5 / 2 + 1
50, // min balance - everything slashed below 50 will get dusted
3 /* slash era 3+3 first, so the affected parts are era 6, era 7 and
* ledge.active. This will cause the affected to go to zero, and then we will
* start slashing older chunks */
),
400
);
// Then
assert_eq!(ledger.active, 0);
assert_eq!(ledger.unlocking, vec![c(4, 100)]);
assert_eq!(ledger.total, 100);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(5, 0), (6, 0), (7, 0)]));
// Tests for saturating arithmetic
// Given
let slash = u64::MAX as Balance * 2;
// The value of the other parts of ledger that will get slashed
let value = slash - (10 * 4);
ledger.active = 10;
ledger.unlocking = bounded_vec![c(4, 10), c(5, 10), c(6, 10), c(7, value)];
ledger.total = value + 40;
// When
let slash_amount = ledger.slash(slash, 0, 0);
assert_eq_error_rate!(slash_amount, slash, 5);
// Then
assert_eq!(ledger.active, 0); // slash of 9
assert_eq!(ledger.unlocking, vec![]);
assert_eq!(ledger.total, 0);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(LedgerSlashPerEra::get().1, BTreeMap::from([(4, 0), (5, 0), (6, 0), (7, 0)]));
// Given
use sp_runtime::PerThing as _;
let slash = u64::MAX as Balance * 2;
let value = u64::MAX as Balance * 2;
let unit = 100;
// slash * value that will saturate
assert!(slash.checked_mul(value).is_none());
// but slash * unit won't.
assert!(slash.checked_mul(unit).is_some());
ledger.unlocking = bounded_vec![c(4, unit), c(5, value), c(6, unit), c(7, unit)];
//--------------------------------------note value^^^
ledger.active = unit;
ledger.total = unit * 4 + value;
// When
assert_eq!(ledger.slash(slash, 0, 0), slash);
// Then
// The amount slashed out of `unit`
let affected_balance = value + unit * 4;
let ratio =
Perquintill::from_rational_with_rounding(slash, affected_balance, Rounding::Up).unwrap();
// `unit` after the slash is applied
let unit_slashed = {
let unit_slash = ratio.mul_ceil(unit);
unit - unit_slash
};
let value_slashed = {
let value_slash = ratio.mul_ceil(value);
value - value_slash
};
assert_eq!(ledger.active, unit_slashed);
assert_eq!(ledger.unlocking, vec![c(5, value_slashed), c(7, 32)]);
assert_eq!(ledger.total, value_slashed + 32);
assert_eq!(LedgerSlashPerEra::get().0, 0);
assert_eq!(
LedgerSlashPerEra::get().1,
BTreeMap::from([(4, 0), (5, value_slashed), (6, 0), (7, 32)])
);
}
#[test]
fn reducing_max_unlocking_chunks_abrupt() {
// Concern is on validators only
// By Default 11, 10 are stash and ctrl and 21,20
ExtBuilder::default().build_and_execute(|| {
// given a staker at era=10 and MaxUnlockChunks set to 2
MaxUnlockingChunks::set(2);
start_active_era(10);
assert_ok!(Staking::bond(RuntimeOrigin::signed(3), 300, RewardDestination::Staked));
assert!(matches!(Staking::ledger(3.into()), Ok(_)));
// when staker unbonds
assert_ok!(Staking::unbond(RuntimeOrigin::signed(3), 20));
// then an unlocking chunk is added at `current_era + bonding_duration`
// => 10 + 3 = 13
let expected_unlocking: BoundedVec<UnlockChunk<Balance>, MaxUnlockingChunks> =
bounded_vec![UnlockChunk { value: 20 as Balance, era: 13 as EraIndex }];
assert!(matches!(Staking::ledger(3.into()),
Ok(StakingLedger {
unlocking,
..
}) if unlocking==expected_unlocking));
// when staker unbonds at next era
start_active_era(11);
assert_ok!(Staking::unbond(RuntimeOrigin::signed(3), 50));
// then another unlock chunk is added
let expected_unlocking: BoundedVec<UnlockChunk<Balance>, MaxUnlockingChunks> =
bounded_vec![UnlockChunk { value: 20, era: 13 }, UnlockChunk { value: 50, era: 14 }];
assert!(matches!(Staking::ledger(3.into()),
Ok(StakingLedger {
unlocking,
..
}) if unlocking==expected_unlocking));
// when staker unbonds further
start_active_era(12);
// then further unbonding not possible
assert_noop!(Staking::unbond(RuntimeOrigin::signed(3), 20), Error::<Test>::NoMoreChunks);
// when max unlocking chunks is reduced abruptly to a low value
MaxUnlockingChunks::set(1);
// then unbond, rebond ops are blocked with ledger in corrupt state
assert_noop!(Staking::unbond(RuntimeOrigin::signed(3), 20), Error::<Test>::NotController);
assert_noop!(Staking::rebond(RuntimeOrigin::signed(3), 100), Error::<Test>::NotController);
// reset the ledger corruption
MaxUnlockingChunks::set(2);
})
}
#[test]
fn cannot_set_unsupported_validator_count() {
ExtBuilder::default().build_and_execute(|| {
MaxWinners::set(50);
// set validator count works
assert_ok!(Staking::set_validator_count(RuntimeOrigin::root(), 30));
assert_ok!(Staking::set_validator_count(RuntimeOrigin::root(), 50));
// setting validator count above 100 does not work
assert_noop!(
Staking::set_validator_count(RuntimeOrigin::root(), 51),
Error::<Test>::TooManyValidators,
);
})
}
#[test]
fn increase_validator_count_errors() {
ExtBuilder::default().build_and_execute(|| {
MaxWinners::set(50);
assert_ok!(Staking::set_validator_count(RuntimeOrigin::root(), 40));
// increase works
assert_ok!(Staking::increase_validator_count(RuntimeOrigin::root(), 6));
assert_eq!(ValidatorCount::<Test>::get(), 46);
// errors
assert_noop!(
Staking::increase_validator_count(RuntimeOrigin::root(), 5),
Error::<Test>::TooManyValidators,
);
})
}
#[test]
fn scale_validator_count_errors() {
ExtBuilder::default().build_and_execute(|| {
MaxWinners::set(50);
assert_ok!(Staking::set_validator_count(RuntimeOrigin::root(), 20));
// scale value works
assert_ok!(Staking::scale_validator_count(
RuntimeOrigin::root(),
Percent::from_percent(200)
));
assert_eq!(ValidatorCount::<Test>::get(), 40);
// errors
assert_noop!(
Staking::scale_validator_count(RuntimeOrigin::root(), Percent::from_percent(126)),
Error::<Test>::TooManyValidators,
);
})
}
#[test]
fn set_min_commission_works_with_admin_origin() {
ExtBuilder::default().build_and_execute(|| {
// no minimum commission set initially
assert_eq!(MinCommission::<Test>::get(), Zero::zero());
// root can set min commission
assert_ok!(Staking::set_min_commission(RuntimeOrigin::root(), Perbill::from_percent(10)));
assert_eq!(MinCommission::<Test>::get(), Perbill::from_percent(10));
// Non privileged origin can not set min_commission
assert_noop!(
Staking::set_min_commission(RuntimeOrigin::signed(2), Perbill::from_percent(15)),
BadOrigin
);
// Admin Origin can set min commission
assert_ok!(Staking::set_min_commission(
RuntimeOrigin::signed(1),
Perbill::from_percent(15),
));
// setting commission below min_commission fails
assert_noop!(
Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(14), blocked: false }
),
Error::<Test>::CommissionTooLow
);
// setting commission >= min_commission works
assert_ok!(Staking::validate(
RuntimeOrigin::signed(11),
ValidatorPrefs { commission: Perbill::from_percent(15), blocked: false }
));
})
}
#[test]
fn can_page_exposure() {
let mut others: Vec<IndividualExposure<AccountId, Balance>> = vec![];
let mut total_stake: Balance = 0;
// 19 nominators
for i in 1..20 {
let individual_stake: Balance = 100 * i as Balance;
others.push(IndividualExposure { who: i, value: individual_stake });
total_stake += individual_stake;
}
let own_stake: Balance = 500;
total_stake += own_stake;
assert_eq!(total_stake, 19_500);
// build full exposure set
let exposure: Exposure<AccountId, Balance> =
Exposure { total: total_stake, own: own_stake, others };
// when
let (exposure_metadata, exposure_page): (
PagedExposureMetadata<Balance>,
Vec<ExposurePage<AccountId, Balance>>,
) = exposure.clone().into_pages(3);
// then
// 7 pages of nominators.
assert_eq!(exposure_page.len(), 7);
assert_eq!(exposure_metadata.page_count, 7);
// first page stake = 100 + 200 + 300
assert!(matches!(exposure_page[0], ExposurePage { page_total: 600, .. }));
// second page stake = 0 + 400 + 500 + 600
assert!(matches!(exposure_page[1], ExposurePage { page_total: 1500, .. }));
// verify overview has the total
assert_eq!(exposure_metadata.total, 19_500);
// verify total stake is same as in the original exposure.
assert_eq!(
exposure_page.iter().map(|a| a.page_total).reduce(|a, b| a + b).unwrap(),
19_500 - exposure_metadata.own
);
// verify own stake is correct
assert_eq!(exposure_metadata.own, 500);
// verify number of nominators are same as in the original exposure.
assert_eq!(exposure_page.iter().map(|a| a.others.len()).reduce(|a, b| a + b).unwrap(), 19);
assert_eq!(exposure_metadata.nominator_count, 19);
}
#[test]
fn should_retain_era_info_only_upto_history_depth() {
ExtBuilder::default().build_and_execute(|| {
// remove existing exposure
Pallet::<Test>::clear_era_information(0);
let validator_stash = 10;
for era in 0..4 {
ClaimedRewards::<Test>::insert(era, &validator_stash, vec![0, 1, 2]);
for page in 0..3 {
ErasStakersPaged::<Test>::insert(
(era, &validator_stash, page),
ExposurePage { page_total: 100, others: vec![] },
);
}
}
for i in 0..4 {
// Count of entries remaining in ClaimedRewards = total - cleared_count
assert_eq!(ClaimedRewards::<Test>::iter().count(), (4 - i));
// 1 claimed_rewards entry for each era
assert_eq!(ClaimedRewards::<Test>::iter_prefix(i as EraIndex).count(), 1);
// 3 entries (pages) for each era
assert_eq!(ErasStakersPaged::<Test>::iter_prefix((i as EraIndex,)).count(), 3);
// when clear era info
Pallet::<Test>::clear_era_information(i as EraIndex);
// then all era entries are cleared
assert_eq!(ClaimedRewards::<Test>::iter_prefix(i as EraIndex).count(), 0);
assert_eq!(ErasStakersPaged::<Test>::iter_prefix((i as EraIndex,)).count(), 0);
}
});
}
#[test]
fn test_legacy_claimed_rewards_is_checked_at_reward_payout() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
// Create a validator:
bond_validator(11, 1000);
// reward validator for next 2 eras
mock::start_active_era(1);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(2);
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
mock::start_active_era(3);
//verify rewards are not claimed
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
1,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
0
),
false
);
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
2,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
0
),
false
);
// assume reward claim for era 1 was stored in legacy storage
Ledger::<Test>::insert(
11,
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![1],
},
);
// verify rewards for era 1 cannot be claimed
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 1, 0),
Error::<Test>::AlreadyClaimed
.with_weight(<Test as Config>::WeightInfo::payout_stakers_alive_staked(0)),
);
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
1,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
0
),
true
);
// verify rewards for era 2 can be claimed
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 2, 0));
assert_eq!(
EraInfo::<Test>::is_rewards_claimed_with_legacy_fallback(
2,
Staking::ledger(11.into()).as_ref().unwrap(),
&11,
0
),
true
);
// but the new claimed rewards for era 2 is not stored in legacy storage
assert_eq!(
Ledger::<Test>::get(11).unwrap(),
StakingLedgerInspect {
stash: 11,
total: 1000,
active: 1000,
unlocking: Default::default(),
legacy_claimed_rewards: bounded_vec![1],
},
);
// instead it is kept in `ClaimedRewards`
assert_eq!(ClaimedRewards::<Test>::get(2, 11), vec![0]);
});
}
#[test]
fn test_validator_exposure_is_backward_compatible_with_non_paged_rewards_payout() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
// case 1: exposure exist in clipped.
// set page cap to 10
MaxExposurePageSize::set(10);
bond_validator(11, 1000);
let mut expected_individual_exposures: Vec<IndividualExposure<AccountId, Balance>> = vec![];
let mut total_exposure: Balance = 0;
// 1st exposure page
for i in 0..10 {
let who = 1000 + i;
let value = 1000 + i as Balance;
bond_nominator(who, value, vec![11]);
expected_individual_exposures.push(IndividualExposure { who, value });
total_exposure += value;
}
for i in 10..15 {
let who = 1000 + i;
let value = 1000 + i as Balance;
bond_nominator(who, value, vec![11]);
expected_individual_exposures.push(IndividualExposure { who, value });
total_exposure += value;
}
mock::start_active_era(1);
// reward validator for current era
Pallet::<Test>::reward_by_ids(vec![(11, 1)]);
// start new era
mock::start_active_era(2);
// verify exposure for era 1 is stored in paged storage, that each exposure is stored in
// one and only one page, and no exposure is repeated.
let actual_exposure_page_0 = ErasStakersPaged::<Test>::get((1, 11, 0)).unwrap();
let actual_exposure_page_1 = ErasStakersPaged::<Test>::get((1, 11, 1)).unwrap();
expected_individual_exposures.iter().for_each(|exposure| {
assert!(
actual_exposure_page_0.others.contains(exposure) ||
actual_exposure_page_1.others.contains(exposure)
);
});
assert_eq!(
expected_individual_exposures.len(),
actual_exposure_page_0.others.len() + actual_exposure_page_1.others.len()
);
// verify `EraInfo` returns page from paged storage
assert_eq!(
EraInfo::<Test>::get_paged_exposure(1, &11, 0).unwrap().others(),
&actual_exposure_page_0.others
);
assert_eq!(
EraInfo::<Test>::get_paged_exposure(1, &11, 1).unwrap().others(),
&actual_exposure_page_1.others
);
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 2);
// validator is exposed
assert!(<Staking as sp_staking::StakingInterface>::is_exposed_in_era(&11, &1));
// nominators are exposed
for i in 10..15 {
let who: AccountId = 1000 + i;
assert!(<Staking as sp_staking::StakingInterface>::is_exposed_in_era(&who, &1));
}
// case 2: exposure exist in ErasStakers and ErasStakersClipped (legacy).
// delete paged storage and add exposure to clipped storage
<ErasStakersPaged<Test>>::remove((1, 11, 0));
<ErasStakersPaged<Test>>::remove((1, 11, 1));
<ErasStakersOverview<Test>>::remove(1, 11);
<ErasStakers<Test>>::insert(
1,
11,
Exposure {
total: total_exposure,
own: 1000,
others: expected_individual_exposures.clone(),
},
);
let mut clipped_exposure = expected_individual_exposures.clone();
clipped_exposure.sort_by(|a, b| b.who.cmp(&a.who));
clipped_exposure.truncate(10);
<ErasStakersClipped<Test>>::insert(
1,
11,
Exposure { total: total_exposure, own: 1000, others: clipped_exposure.clone() },
);
// verify `EraInfo` returns exposure from clipped storage
let actual_exposure_paged = EraInfo::<Test>::get_paged_exposure(1, &11, 0).unwrap();
assert_eq!(actual_exposure_paged.others(), &clipped_exposure);
assert_eq!(actual_exposure_paged.own(), 1000);
assert_eq!(actual_exposure_paged.exposure_metadata.page_count, 1);
let actual_exposure_full = EraInfo::<Test>::get_full_exposure(1, &11);
assert_eq!(actual_exposure_full.others, expected_individual_exposures);
assert_eq!(actual_exposure_full.own, 1000);
assert_eq!(actual_exposure_full.total, total_exposure);
// validator is exposed
assert!(<Staking as sp_staking::StakingInterface>::is_exposed_in_era(&11, &1));
// nominators are exposed
for i in 10..15 {
let who: AccountId = 1000 + i;
assert!(<Staking as sp_staking::StakingInterface>::is_exposed_in_era(&who, &1));
}
// for pages other than 0, clipped storage returns empty exposure
assert_eq!(EraInfo::<Test>::get_paged_exposure(1, &11, 1), None);
// page size is 1 for clipped storage
assert_eq!(EraInfo::<Test>::get_page_count(1, &11), 1);
// payout for page 0 works
assert_ok!(Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 0, 0));
// payout for page 1 fails
assert_noop!(
Staking::payout_stakers_by_page(RuntimeOrigin::signed(1337), 11, 0, 1),
Error::<Test>::InvalidPage
.with_weight(<Test as Config>::WeightInfo::payout_stakers_alive_staked(0))
);
});
}
mod staking_interface {
use frame_support::storage::with_storage_layer;
use sp_staking::StakingInterface;
use super::*;
#[test]
fn force_unstake_with_slash_works() {
ExtBuilder::default().build_and_execute(|| {
// without slash
let _ = with_storage_layer::<(), _, _>(|| {
// bond an account, can unstake
assert_eq!(Staking::bonded(&11), Some(11));
assert_ok!(<Staking as StakingInterface>::force_unstake(11));
Err(DispatchError::from("revert"))
});
// bond again and add a slash, still can unstake.
assert_eq!(Staking::bonded(&11), Some(11));
add_slash(&11);
assert_ok!(<Staking as StakingInterface>::force_unstake(11));
});
}
#[test]
fn do_withdraw_unbonded_with_wrong_slash_spans_works_as_expected() {
ExtBuilder::default().build_and_execute(|| {
on_offence_now(
&[OffenceDetails {
offender: (11, Staking::eras_stakers(active_era(), &11)),
reporters: vec![],
}],
&[Perbill::from_percent(100)],
);
assert_eq!(Staking::bonded(&11), Some(11));
assert_noop!(
Staking::withdraw_unbonded(RuntimeOrigin::signed(11), 0),
Error::<Test>::IncorrectSlashingSpans
);
let num_slashing_spans = Staking::slashing_spans(&11).map_or(0, |s| s.iter().count());
assert_ok!(Staking::withdraw_unbonded(
RuntimeOrigin::signed(11),
num_slashing_spans as u32
));
});
}
#[test]
fn status() {
ExtBuilder::default().build_and_execute(|| {
// stash of a validator is identified as a validator
assert_eq!(Staking::status(&11).unwrap(), StakerStatus::Validator);
// .. but not the controller.
assert!(Staking::status(&10).is_err());
// stash of nominator is identified as a nominator
assert_eq!(Staking::status(&101).unwrap(), StakerStatus::Nominator(vec![11, 21]));
// .. but not the controller.
assert!(Staking::status(&100).is_err());
// stash of chilled is identified as a chilled
assert_eq!(Staking::status(&41).unwrap(), StakerStatus::Idle);
// .. but not the controller.
assert!(Staking::status(&40).is_err());
// random other account.
assert!(Staking::status(&42).is_err());
})
}
}
mod ledger {
use super::*;
#[test]
fn paired_account_works() {
ExtBuilder::default().build_and_execute(|| {
assert_ok!(Staking::bond(
RuntimeOrigin::signed(10),
100,
RewardDestination::Account(10)
));
assert_eq!(<Bonded<Test>>::get(&10), Some(10));
assert_eq!(
StakingLedger::<Test>::paired_account(StakingAccount::Controller(10)),
Some(10)
);
assert_eq!(StakingLedger::<Test>::paired_account(StakingAccount::Stash(10)), Some(10));
assert_eq!(<Bonded<Test>>::get(&42), None);
assert_eq!(StakingLedger::<Test>::paired_account(StakingAccount::Controller(42)), None);
assert_eq!(StakingLedger::<Test>::paired_account(StakingAccount::Stash(42)), None);
// bond manually stash with different controller. This is deprecated but the migration
// has not been complete yet (controller: 100, stash: 200)
assert_ok!(bond_controller_stash(100, 200));
assert_eq!(<Bonded<Test>>::get(&200), Some(100));
assert_eq!(
StakingLedger::<Test>::paired_account(StakingAccount::Controller(100)),
Some(200)
);
assert_eq!(
StakingLedger::<Test>::paired_account(StakingAccount::Stash(200)),
Some(100)
);
})
}
#[test]
fn get_ledger_works() {
ExtBuilder::default().build_and_execute(|| {
// stash does not exist
assert!(StakingLedger::<Test>::get(StakingAccount::Stash(42)).is_err());
// bonded and paired
assert_eq!(<Bonded<Test>>::get(&11), Some(11));
match StakingLedger::<Test>::get(StakingAccount::Stash(11)) {
Ok(ledger) => {
assert_eq!(ledger.controller(), Some(11));
assert_eq!(ledger.stash, 11);
},
Err(_) => panic!("staking ledger must exist"),
};
// bond manually stash with different controller. This is deprecated but the migration
// has not been complete yet (controller: 100, stash: 200)
assert_ok!(bond_controller_stash(100, 200));
assert_eq!(<Bonded<Test>>::get(&200), Some(100));
match StakingLedger::<Test>::get(StakingAccount::Stash(200)) {
Ok(ledger) => {
assert_eq!(ledger.controller(), Some(100));
assert_eq!(ledger.stash, 200);
},
Err(_) => panic!("staking ledger must exist"),
};
match StakingLedger::<Test>::get(StakingAccount::Controller(100)) {
Ok(ledger) => {
assert_eq!(ledger.controller(), Some(100));
assert_eq!(ledger.stash, 200);
},
Err(_) => panic!("staking ledger must exist"),
};
})
}
#[test]
fn bond_works() {
ExtBuilder::default().build_and_execute(|| {
assert!(!StakingLedger::<Test>::is_bonded(StakingAccount::Stash(42)));
assert!(<Bonded<Test>>::get(&42).is_none());
let mut ledger: StakingLedger<Test> = StakingLedger::default_from(42);
let reward_dest = RewardDestination::Account(10);
assert_ok!(ledger.clone().bond(reward_dest));
assert!(StakingLedger::<Test>::is_bonded(StakingAccount::Stash(42)));
assert!(<Bonded<Test>>::get(&42).is_some());
assert_eq!(<Payee<Test>>::get(&42), reward_dest);
// cannot bond again.
assert!(ledger.clone().bond(reward_dest).is_err());
// once bonded, update works as expected.
ledger.legacy_claimed_rewards = bounded_vec![1];
assert_ok!(ledger.update());
})
}
#[test]
fn is_bonded_works() {
ExtBuilder::default().build_and_execute(|| {
assert!(!StakingLedger::<Test>::is_bonded(StakingAccount::Stash(42)));
assert!(!StakingLedger::<Test>::is_bonded(StakingAccount::Controller(42)));
// adds entry to Bonded without Ledger pair (should not happen).
<Bonded<Test>>::insert(42, 42);
assert!(!StakingLedger::<Test>::is_bonded(StakingAccount::Controller(42)));
assert_eq!(<Bonded<Test>>::get(&11), Some(11));
assert!(StakingLedger::<Test>::is_bonded(StakingAccount::Stash(11)));
assert!(StakingLedger::<Test>::is_bonded(StakingAccount::Controller(11)));
<Bonded<Test>>::remove(42); // ensures try-state checks pass.
})
}
#[test]
#[allow(deprecated)]
fn set_payee_errors_on_controller_destination() {
ExtBuilder::default().build_and_execute(|| {
Payee::<Test>::insert(11, RewardDestination::Staked);
assert_noop!(
Staking::set_payee(RuntimeOrigin::signed(11), RewardDestination::Controller),
Error::<Test>::ControllerDeprecated
);
assert_eq!(Payee::<Test>::get(&11), RewardDestination::Staked);
})
}
#[test]
#[allow(deprecated)]
fn update_payee_migration_works() {
ExtBuilder::default().build_and_execute(|| {
// migrate a `Controller` variant to `Account` variant.
Payee::<Test>::insert(11, RewardDestination::Controller);
assert_eq!(Payee::<Test>::get(&11), RewardDestination::Controller);
assert_ok!(Staking::update_payee(RuntimeOrigin::signed(11), 11));
assert_eq!(Payee::<Test>::get(&11), RewardDestination::Account(11));
// Do not migrate a variant if not `Controller`.
Payee::<Test>::insert(21, RewardDestination::Stash);
assert_eq!(Payee::<Test>::get(&21), RewardDestination::Stash);
assert_noop!(
Staking::update_payee(RuntimeOrigin::signed(11), 21),
Error::<Test>::NotController
);
assert_eq!(Payee::<Test>::get(&21), RewardDestination::Stash);
})
}
}
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