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versionbits: Add explicit NEVER_ACTIVE deployments

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Previously we used deployments that would timeout prior to Bitcoin's
invention, which allowed the deployment to still be activated in unit
tests. This switches those deployments to be truly never active.
This commit is contained in:
Anthony Towns 2021-03-27 23:00:14 +10:00
parent dd07e6da48
commit 55ac5f568a
6 changed files with 48 additions and 41 deletions
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27
src/test/fuzz/versionbits.cpp
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@ -163,13 +163,12 @@ FUZZ_TARGET_INIT(versionbits, initialize)
} else {
if (fuzzed_data_provider.ConsumeBool()) {
start_time = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
timeout = Consensus::BIP9Deployment::NO_TIMEOUT;
always_active_test = true;
} else {
start_time = 1199145601; // January 1, 2008
timeout = 1230767999; // December 31, 2008
start_time = Consensus::BIP9Deployment::NEVER_ACTIVE;
never_active_test = true;
}
timeout = fuzzed_data_provider.ConsumeBool() ? Consensus::BIP9Deployment::NO_TIMEOUT : fuzzed_data_provider.ConsumeIntegral<int64_t>();
}
int min_activation = fuzzed_data_provider.ConsumeIntegralInRange<int>(0, period * max_periods);
@ -323,7 +322,7 @@ FUZZ_TARGET_INIT(versionbits, initialize)
assert(exp_state == ThresholdState::ACTIVE || exp_state == ThresholdState::LOCKED_IN);
break;
case ThresholdState::FAILED:
assert(current_block->GetMedianTimePast() >= checker.m_end);
assert(never_active_test || current_block->GetMedianTimePast() >= checker.m_end);
assert(exp_state != ThresholdState::LOCKED_IN && exp_state != ThresholdState::ACTIVE);
break;
default:
@ -335,26 +334,20 @@ FUZZ_TARGET_INIT(versionbits, initialize)
assert(state == ThresholdState::ACTIVE || state == ThresholdState::FAILED);
}
// "always active" has additional restrictions
if (always_active_test) {
// "always active" has additional restrictions
assert(state == ThresholdState::ACTIVE);
assert(exp_state == ThresholdState::ACTIVE);
assert(since == 0);
} else if (never_active_test) {
// "never active" does too
assert(state == ThresholdState::FAILED);
assert(exp_state == ThresholdState::FAILED);
assert(since == 0);
} else {
// except for always active, the initial state is always DEFINED
// for signalled deployments, the initial state is always DEFINED
assert(since > 0 || state == ThresholdState::DEFINED);
assert(exp_since > 0 || exp_state == ThresholdState::DEFINED);
}
// "never active" does too
if (never_active_test) {
assert(state == ThresholdState::FAILED);
assert(since == period);
if (exp_since == 0) {
assert(exp_state == ThresholdState::DEFINED);
} else {
assert(exp_state == ThresholdState::FAILED);
}
}
}
} // namespace