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test(consensus): avoid brittle rng lcl quorum check

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This commit is contained in:
Nicholas Dudfield
2026-04-27 14:47:18 +07:00
parent efc497cf23
commit aafd5b940b
1 changed files with 24 additions and 24 deletions
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48
src/test/consensus/ConsensusRng_test.cpp
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@@ -593,33 +593,33 @@ public:
// entropy for that ledger.
BEAST_EXPECT(sim.branches(network) == 1);
std::vector<Peer const*> majority;
for (Peer const* ref : network)
auto sameBranch = [](auto const& lhs, auto const& rhs) {
if (lhs.id() == rhs.id())
return true;
if (lhs.seq() < rhs.seq())
return rhs.isAncestor(lhs);
return lhs.isAncestor(rhs);
};
for (Peer const* lhs : network)
{
std::vector<Peer const*> cohort;
for (Peer const* peer : network)
for (Peer const* rhs : network)
{
if (peer->lastClosedLedger.id() == ref->lastClosedLedger.id())
cohort.push_back(peer);
BEAST_EXPECT(
sameBranch(lhs->lastClosedLedger, rhs->lastClosedLedger));
if (lhs->lastClosedLedger.id() != rhs->lastClosedLedger.id())
continue;
BEAST_EXPECT(
lhs->ce().lastEntropyDigest_ ==
rhs->ce().lastEntropyDigest_);
BEAST_EXPECT(
lhs->ce().lastEntropyCount_ == rhs->ce().lastEntropyCount_);
BEAST_EXPECT(
lhs->ce().lastEntropyWasFallback_ ==
rhs->ce().lastEntropyWasFallback_);
}
if (cohort.size() > majority.size())
majority = std::move(cohort);
}
// For a 6-validator UNL the entropy quorum is 5, so we require at
// least a quorum-sized cohort to have accepted the same ledger.
BEAST_EXPECT(majority.size() >= 5);
// Peers that accepted the same ledger must agree on entropy
// (same digest or all zero).
auto const& refDigest = majority[0]->ce().lastEntropyDigest_;
auto const refCount = majority[0]->ce().lastEntropyCount_;
auto const refFallback = majority[0]->ce().lastEntropyWasFallback_;
for (Peer const* peer : majority)
{
BEAST_EXPECT(peer->ce().lastEntropyDigest_ == refDigest);
BEAST_EXPECT(peer->ce().lastEntropyCount_ == refCount);
BEAST_EXPECT(peer->ce().lastEntropyWasFallback_ == refFallback);
}
}