Fix Ethereum pallet benchmarks (#601)

bridges/bin/rialto/runtime/src/exchange.rs

@@ -133,7 +133,7 @@ pub(crate) fn prepare_environment_for_claim<T: pallet_bridge_eth_poa::Config<I>,
 ) -> bp_eth_poa::H256 {
 	use bp_eth_poa::compute_merkle_root;
 	use pallet_bridge_eth_poa::{
-		test_utils::{insert_header, validator_utils::validator, HeaderBuilder},
+		test_utils::{insert_dummy_header, validator_utils::validator, HeaderBuilder},
 		BridgeStorage, Storage,
 	};
 
@@ -143,7 +143,7 @@ pub(crate) fn prepare_environment_for_claim<T: pallet_bridge_eth_poa::Config<I>,
 		.receipts_root(compute_merkle_root(transactions.iter().map(|(_, receipt)| receipt)))
 		.sign_by(&validator(0));
 	let header_id = header.compute_id();
-	insert_header(&mut storage, header);
+	insert_dummy_header(&mut storage, header);
 	storage.finalize_and_prune_headers(Some(header_id), 0);
 
 	header_id.hash

bridges/modules/ethereum/src/finality.rs

@@ -140,7 +140,7 @@ fn is_finalized(
 }
 
 /// Prepare 'votes' of header and its ancestors' signers.
-fn prepare_votes<Submitter>(
+pub(crate) fn prepare_votes<Submitter>(
 	mut cached_votes: CachedFinalityVotes<Submitter>,
 	best_finalized: HeaderId,
 	validators: &BTreeSet<&Address>,

bridges/modules/ethereum/src/lib.rs

@@ -1049,6 +1049,7 @@ pub(crate) mod tests {
 		genesis, insert_header, run_test, run_test_with_genesis, validators_addresses, HeaderBuilder, TestRuntime,
 		GAS_LIMIT,
 	};
+	use crate::test_utils::validator_utils::*;
 	use bp_eth_poa::compute_merkle_root;
 
 	const TOTAL_VALIDATORS: usize = 3;
@@ -1069,33 +1070,24 @@ pub(crate) mod tests {
 	}
 
 	fn example_header_with_failed_receipt() -> AuraHeader {
-		AuraHeader {
-			number: 3,
-			transactions_root: compute_merkle_root(vec![example_tx()].into_iter()),
-			receipts_root: compute_merkle_root(vec![example_tx_receipt(false)].into_iter()),
-			parent_hash: example_header().compute_hash(),
-			..Default::default()
-		}
+		HeaderBuilder::with_parent(&example_header())
+			.transactions_root(compute_merkle_root(vec![example_tx()].into_iter()))
+			.receipts_root(compute_merkle_root(vec![example_tx_receipt(false)].into_iter()))
+			.sign_by(&validator(0))
 	}
 
 	fn example_header() -> AuraHeader {
-		AuraHeader {
-			number: 2,
-			transactions_root: compute_merkle_root(vec![example_tx()].into_iter()),
-			receipts_root: compute_merkle_root(vec![example_tx_receipt(true)].into_iter()),
-			parent_hash: example_header_parent().compute_hash(),
-			..Default::default()
-		}
+		HeaderBuilder::with_parent(&example_header_parent())
+			.transactions_root(compute_merkle_root(vec![example_tx()].into_iter()))
+			.receipts_root(compute_merkle_root(vec![example_tx_receipt(true)].into_iter()))
+			.sign_by(&validator(0))
 	}
 
 	fn example_header_parent() -> AuraHeader {
-		AuraHeader {
-			number: 1,
-			transactions_root: compute_merkle_root(vec![example_tx()].into_iter()),
-			receipts_root: compute_merkle_root(vec![example_tx_receipt(true)].into_iter()),
-			parent_hash: genesis().compute_hash(),
-			..Default::default()
-		}
+		HeaderBuilder::with_parent(&genesis())
+			.transactions_root(compute_merkle_root(vec![example_tx()].into_iter()))
+			.receipts_root(compute_merkle_root(vec![example_tx_receipt(true)].into_iter()))
+			.sign_by(&validator(0))
 	}
 
 	fn with_headers_to_prune<T>(f: impl Fn(BridgeStorage<TestRuntime>) -> T) -> T {
@@ -1277,10 +1269,7 @@ pub(crate) mod tests {
 			let header_with_entry = HeaderBuilder::with_parent_number(interval - 1).sign_by_set(&ctx.validators);
 			let header_with_entry_hash = header_with_entry.compute_hash();
 			insert_header(&mut storage, header_with_entry);
-			assert_eq!(
-				FinalityCache::<TestRuntime>::get(&header_with_entry_hash),
-				Some(Default::default()),
-			);
+			assert!(FinalityCache::<TestRuntime>::get(&header_with_entry_hash).is_some());
 
 			// when we later prune this header, cache entry is removed
 			BlocksToPrune::<DefaultInstance>::put(PruningRange {

bridges/modules/ethereum/src/test_utils.rs

@@ -228,7 +228,41 @@ where
 }
 
 /// Insert unverified header into storage.
+///
+/// This function assumes that the header is signed by validator from the current set.
 pub fn insert_header<S: Storage>(storage: &mut S, header: AuraHeader) {
+	let id = header.compute_id();
+	let best_finalized = storage.finalized_block();
+	let import_context = storage.import_context(None, &header.parent_hash).unwrap();
+	let parent_finality_votes = storage.cached_finality_votes(&header.parent_id().unwrap(), &best_finalized, |_| false);
+	let finality_votes = crate::finality::prepare_votes(
+		parent_finality_votes,
+		best_finalized,
+		&import_context.validators_set().validators.iter().collect(),
+		id,
+		&header,
+		None,
+	)
+	.unwrap();
+
+	storage.insert_header(HeaderToImport {
+		context: storage.import_context(None, &header.parent_hash).unwrap(),
+		is_best: true,
+		id,
+		header,
+		total_difficulty: 0.into(),
+		enacted_change: None,
+		scheduled_change: None,
+		finality_votes,
+	});
+}
+
+/// Insert unverified header into storage.
+///
+/// No assumptions about header author are made. The cost is that finality votes cache
+/// is filled incorrectly, so this function shall not be used if you're going to insert
+/// (or import) header descendants.
+pub fn insert_dummy_header<S: Storage>(storage: &mut S, header: AuraHeader) {
 	storage.insert_header(HeaderToImport {
 		context: storage.import_context(None, &header.parent_hash).unwrap(),
 		is_best: true,