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// Copyright 2020-2021 Parity Technologies (UK) Ltd.
// This file is part of Parity Bridges Common.
// Parity Bridges Common is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity Bridges Common is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
//! Tests for Grandpa equivocations collector code.
use bp_header_chain::justification::EquivocationsCollector;
use bp_test_utils::*;
use finality_grandpa::Precommit;
use sp_consensus_grandpa::EquivocationProof;
type TestHeader = sp_runtime::testing::Header;
#[test]
fn duplicate_votes_are_not_considered_equivocations() {
let voter_set = voter_set();
let base_justification = make_default_justification::<TestHeader>(&test_header(1));
let mut collector =
EquivocationsCollector::new(TEST_GRANDPA_SET_ID, &voter_set, &base_justification).unwrap();
collector.parse_justification(&base_justification.clone()).unwrap();
assert_eq!(collector.into_equivocation_proofs().len(), 0);
}
#[test]
fn equivocations_are_detected_in_base_justification_redundant_votes() {
let voter_set = voter_set();
let mut base_justification = make_default_justification::<TestHeader>(&test_header(1));
let first_vote = base_justification.commit.precommits[0].clone();
let equivocation = signed_precommit::<TestHeader>(
&ALICE,
header_id::<TestHeader>(1),
base_justification.round,
TEST_GRANDPA_SET_ID,
);
base_justification.commit.precommits.push(equivocation.clone());
let collector =
EquivocationsCollector::new(TEST_GRANDPA_SET_ID, &voter_set, &base_justification).unwrap();
assert_eq!(
collector.into_equivocation_proofs(),
vec![EquivocationProof::new(
1,
sp_consensus_grandpa::Equivocation::Precommit(finality_grandpa::Equivocation {
round_number: 1,
identity: ALICE.into(),
first: (
Precommit {
target_hash: first_vote.precommit.target_hash,
target_number: first_vote.precommit.target_number
},
first_vote.signature
),
second: (
Precommit {
target_hash: equivocation.precommit.target_hash,
target_number: equivocation.precommit.target_number
},
equivocation.signature
)
})
)]
);
}
#[test]
fn equivocations_are_detected_in_extra_justification_redundant_votes() {
let voter_set = voter_set();
let base_justification = make_default_justification::<TestHeader>(&test_header(1));
let first_vote = base_justification.commit.precommits[0].clone();
let mut extra_justification = base_justification.clone();
let equivocation = signed_precommit::<TestHeader>(
&ALICE,
header_id::<TestHeader>(1),
base_justification.round,
TEST_GRANDPA_SET_ID,
);
extra_justification.commit.precommits.push(equivocation.clone());
let mut collector =
EquivocationsCollector::new(TEST_GRANDPA_SET_ID, &voter_set, &base_justification).unwrap();
collector.parse_justification(&extra_justification).unwrap();
assert_eq!(
collector.into_equivocation_proofs(),
vec![EquivocationProof::new(
1,
sp_consensus_grandpa::Equivocation::Precommit(finality_grandpa::Equivocation {
round_number: 1,
identity: ALICE.into(),
first: (
Precommit {
target_hash: first_vote.precommit.target_hash,
target_number: first_vote.precommit.target_number
},
first_vote.signature
),
second: (
Precommit {
target_hash: equivocation.precommit.target_hash,
target_number: equivocation.precommit.target_number
},
equivocation.signature
)
})
)]
);
}