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Make planning epoch config change in BABE easier (#5776)

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* Make planning epoch config change in BABE easier

* Bump node runtime version

* Update frame/babe/src/lib.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* BabeEpochConfiguration -> NextConfigDescriptor

* Add tests for babe config changes

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
Co-authored-by: André Silva <andre.beat@gmail.com>
This commit is contained in:
Wei Tang
2020-05-20 22:08:20 +02:00
committed by GitHub
parent 3f3753b8e4
commit e04f237152
2 changed files with 51 additions and 3 deletions
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substrate/frame/babe/src/tests.rs
+33
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@@ -22,6 +22,7 @@ use mock::*;
use frame_support::traits::OnFinalize;
use pallet_session::ShouldEndSession;
use sp_core::crypto::IsWrappedBy;
use sp_consensus_babe::AllowedSlots;
use sp_consensus_vrf::schnorrkel::{VRFOutput, VRFProof};
const EMPTY_RANDOMNESS: [u8; 32] = [
@@ -150,3 +151,35 @@ fn can_predict_next_epoch_change() {
assert_eq!(Babe::next_expected_epoch_change(System::block_number()), Some(5 + 2));
})
}
#[test]
fn can_enact_next_config() {
new_test_ext(0).1.execute_with(|| {
assert_eq!(<Test as Trait>::EpochDuration::get(), 3);
// this sets the genesis slot to 6;
go_to_block(1, 6);
assert_eq!(Babe::genesis_slot(), 6);
assert_eq!(Babe::current_slot(), 6);
assert_eq!(Babe::epoch_index(), 0);
go_to_block(2, 7);
Babe::plan_config_change(NextConfigDescriptor::V1 {
c: (1, 4),
allowed_slots: AllowedSlots::PrimarySlots,
});
progress_to_block(4);
Babe::on_finalize(9);
let header = System::finalize();
let consensus_log = sp_consensus_babe::ConsensusLog::NextConfigData(
sp_consensus_babe::digests::NextConfigDescriptor::V1 {
c: (1, 4),
allowed_slots: AllowedSlots::PrimarySlots,
}
);
let consensus_digest = DigestItem::Consensus(BABE_ENGINE_ID, consensus_log.encode());
assert_eq!(header.digest.logs[2], consensus_digest.clone())
});
}