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Allow referendums to begin out of order (#4345)

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* Allow referendums to begin out of order

* Make `inject_referendum` infallible

* Merge remote-tracking branch 'origin/gav-verified-id' into gav-verified-id

# Conflicts:
#	frame/identity/src/lib.rs

* Renames.
This commit is contained in:
Gavin Wood
2019-12-12 00:27:13 +09:00
committed by GitHub
parent 7773daaf5b
commit 8131dc8a66
1 changed files with 70 additions and 34 deletions
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substrate/frame/democracy/src/lib.rs
+70 -34
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@@ -276,8 +276,9 @@ decl_storage! {
/// The next free referendum index, aka the number of referenda started so far.
pub ReferendumCount get(fn referendum_count) build(|_| 0 as ReferendumIndex): ReferendumIndex;
/// The next referendum index that should be tallied.
pub NextTally get(fn next_tally) build(|_| 0 as ReferendumIndex): ReferendumIndex;
/// The lowest referendum index representing an unbaked referendum. Equal to
/// `ReferendumCount` if there isn't a unbaked referendum.
pub LowestUnbaked get(fn lowest_unbaked) build(|_| 0 as ReferendumIndex): ReferendumIndex;
/// Information concerning any given referendum.
pub ReferendumInfoOf get(fn referendum_info):
map ReferendumIndex => Option<(ReferendumInfo<T::BlockNumber, T::Hash>)>;
@@ -541,7 +542,7 @@ decl_module! {
let now = <system::Module<T>>::block_number();
// We don't consider it an error if `vote_period` is too low, like `emergency_propose`.
let period = voting_period.max(T::EmergencyVotingPeriod::get());
Self::inject_referendum(now + period, proposal_hash, threshold, delay).map(|_| ())?;
Self::inject_referendum(now + period, proposal_hash, threshold, delay);
}
/// Veto and blacklist the external proposal hash.
@@ -763,7 +764,7 @@ impl<T: Trait> Module<T> {
pub fn active_referenda()
-> Vec<(ReferendumIndex, ReferendumInfo<T::BlockNumber, T::Hash>)>
{
let next = Self::next_tally();
let next = Self::lowest_unbaked();
let last = Self::referendum_count();
(next..last).into_iter()
.filter_map(|i| Self::referendum_info(i).map(|info| (i, info)))
@@ -774,11 +775,11 @@ impl<T: Trait> Module<T> {
pub fn maturing_referenda_at(
n: T::BlockNumber
) -> Vec<(ReferendumIndex, ReferendumInfo<T::BlockNumber, T::Hash>)> {
let next = Self::next_tally();
let next = Self::lowest_unbaked();
let last = Self::referendum_count();
(next..last).into_iter()
.filter_map(|i| Self::referendum_info(i).map(|info| (i, info)))
.take_while(|&(_, ref info)| info.end == n)
.filter(|&(_, ref info)| info.end == n)
.collect()
}
@@ -867,7 +868,7 @@ impl<T: Trait> Module<T> {
proposal_hash: T::Hash,
threshold: VoteThreshold,
delay: T::BlockNumber
) -> result::Result<ReferendumIndex, &'static str> {
) -> ReferendumIndex {
<Module<T>>::inject_referendum(
<system::Module<T>>::block_number() + T::VotingPeriod::get(),
proposal_hash,
@@ -900,26 +901,26 @@ impl<T: Trait> Module<T> {
proposal_hash: T::Hash,
threshold: VoteThreshold,
delay: T::BlockNumber,
) -> result::Result<ReferendumIndex, &'static str> {
) -> ReferendumIndex {
let ref_index = Self::referendum_count();
if ref_index.checked_sub(1)
.and_then(Self::referendum_info)
.map(|i| i.end > end)
.unwrap_or(false)
{
Err("Cannot inject a referendum that ends earlier than preceeding referendum")?
}
ReferendumCount::put(ref_index + 1);
let item = ReferendumInfo { end, proposal_hash, threshold, delay };
<ReferendumInfoOf<T>>::insert(ref_index, item);
Self::deposit_event(RawEvent::Started(ref_index, threshold));
Ok(ref_index)
ref_index
}
/// Remove all info on a referendum.
fn clear_referendum(ref_index: ReferendumIndex) {
<ReferendumInfoOf<T>>::remove(ref_index);
LowestUnbaked::mutate(|i| if *i == ref_index {
*i += 1;
let end = ReferendumCount::get();
while !Self::is_active_referendum(*i) && *i < end {
*i += 1;
}
});
<VotersFor<T>>::remove(ref_index);
for v in Self::voters_for(ref_index) {
<VoteOf<T>>::remove((ref_index, v));
@@ -967,7 +968,7 @@ impl<T: Trait> Module<T> {
proposal,
threshold,
T::EnactmentPeriod::get(),
)?;
);
Ok(())
} else {
Err("No external proposal waiting")
@@ -996,7 +997,7 @@ impl<T: Trait> Module<T> {
proposal,
VoteThreshold::SuperMajorityApprove,
T::EnactmentPeriod::get(),
)?;
);
}
Ok(())
} else {
@@ -1037,6 +1038,7 @@ impl<T: Trait> Module<T> {
}
Self::clear_referendum(index);
if approved {
Self::deposit_event(RawEvent::Passed(index));
if info.delay.is_zero() {
@@ -1050,7 +1052,6 @@ impl<T: Trait> Module<T> {
} else {
Self::deposit_event(RawEvent::NotPassed(index));
}
NextTally::put(index + 1);
Ok(())
}
@@ -1277,7 +1278,7 @@ mod tests {
set_balance_proposal_hash(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
next_block();
@@ -1304,7 +1305,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
assert_eq!(Balances::reserved_balance(6), 12);
@@ -1329,7 +1330,7 @@ mod tests {
set_balance_proposal_hash(2),
VoteThreshold::SuperMajorityApprove,
1
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
assert_noop!(
@@ -1470,7 +1471,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
2
).unwrap();
);
assert!(Democracy::referendum_info(r).is_some());
assert_noop!(Democracy::emergency_cancel(Origin::signed(3), r), "Invalid origin");
@@ -1484,7 +1485,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
2
).unwrap();
);
assert!(Democracy::referendum_info(r).is_some());
assert_noop!(Democracy::emergency_cancel(Origin::signed(4), r), "cannot cancel the same proposal twice");
});
@@ -2013,6 +2014,41 @@ mod tests {
});
}
#[test]
fn ooo_inject_referendums_should_work() {
new_test_ext().execute_with(|| {
System::set_block_number(1);
let r1 = Democracy::inject_referendum(
3,
set_balance_proposal_hash_and_note(3),
VoteThreshold::SuperMajorityApprove,
0
);
let r2 = Democracy::inject_referendum(
2,
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
);
assert_ok!(Democracy::vote(Origin::signed(1), r2, AYE));
assert_eq!(Democracy::voters_for(r2), vec![1]);
assert_eq!(Democracy::vote_of((r2, 1)), AYE);
assert_eq!(Democracy::tally(r2), (1, 0, 1));
next_block();
assert_eq!(Balances::free_balance(&42), 2);
assert_ok!(Democracy::vote(Origin::signed(1), r1, AYE));
assert_eq!(Democracy::voters_for(r1), vec![1]);
assert_eq!(Democracy::vote_of((r1, 1)), AYE);
assert_eq!(Democracy::tally(r1), (1, 0, 1));
next_block();
assert_eq!(Balances::free_balance(&42), 3);
});
}
#[test]
fn simple_passing_should_work() {
new_test_ext().execute_with(|| {
@@ -2022,7 +2058,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
assert_eq!(Democracy::voters_for(r), vec![1]);
@@ -2045,7 +2081,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
assert_ok!(Democracy::cancel_referendum(Origin::ROOT, r.into()));
@@ -2065,7 +2101,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, NAY));
assert_eq!(Democracy::voters_for(r), vec![1]);
@@ -2088,7 +2124,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, BIG_AYE));
assert_ok!(Democracy::vote(Origin::signed(2), r, BIG_NAY));
@@ -2115,7 +2151,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
1
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, AYE));
assert_ok!(Democracy::vote(Origin::signed(2), r, AYE));
assert_ok!(Democracy::vote(Origin::signed(3), r, AYE));
@@ -2143,7 +2179,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(5), r, BIG_NAY));
assert_ok!(Democracy::vote(Origin::signed(6), r, BIG_AYE));
@@ -2168,7 +2204,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(4), r, BIG_AYE));
assert_ok!(Democracy::vote(Origin::signed(5), r, BIG_NAY));
assert_ok!(Democracy::vote(Origin::signed(6), r, BIG_AYE));
@@ -2191,7 +2227,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, Vote {
aye: false,
conviction: Conviction::Locked5x
@@ -2251,7 +2287,7 @@ mod tests {
set_balance_proposal_hash_and_note(2),
VoteThreshold::SuperMajorityApprove,
0
).unwrap();
);
assert_ok!(Democracy::vote(Origin::signed(1), r, Vote {
aye: false,
conviction: Conviction::Locked5x