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Staking: store last min-active-bond on-chain (#12889)

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* Staking: store last min-active-bond on-chain

Storing the `min-active-bond` onchain helps the UIs with minimal on-chain costs.

Closes https://github.com/paritytech/substrate/issues/12746

* Avoid relying on  sorting to set the

* Addresses PR comments
This commit is contained in:
Gonçalo Pestana
2022-12-14 22:55:24 +00:00
committed by GitHub
parent 391adaf443
commit 14bd4bde25
3 changed files with 43 additions and 1 deletions
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substrate/frame/staking/src/tests.rs
+26
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@@ -4463,6 +4463,32 @@ mod election_data_provider {
);
}
#[test]
fn set_minimum_active_stake_is_correct() {
ExtBuilder::default()
.nominate(false)
.add_staker(61, 60, 2_000, StakerStatus::<AccountId>::Nominator(vec![21]))
.add_staker(71, 70, 10, StakerStatus::<AccountId>::Nominator(vec![21]))
.add_staker(81, 80, 50, StakerStatus::<AccountId>::Nominator(vec![21]))
.build_and_execute(|| {
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(None));
assert_eq!(MinimumActiveStake::<Test>::get(), 10);
// remove staker with lower bond by limiting the number of voters and check
// `MinimumActiveStake` again after electing voters.
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(Some(5)));
assert_eq!(MinimumActiveStake::<Test>::get(), 50);
});
}
#[test]
fn set_minimum_active_stake_zero_correct() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {
assert_ok!(<Staking as ElectionDataProvider>::electing_voters(None));
assert_eq!(MinimumActiveStake::<Test>::get(), 0);
});
}
#[test]
fn voters_include_self_vote() {
ExtBuilder::default().nominate(false).build_and_execute(|| {