client/beefy: fix incorrect BEEFY justifications import test (#12593)

Signed-off-by: Adrian Catangiu <adrian@parity.io>

substrate/client/beefy/src/tests.rs

@@ -755,10 +755,16 @@ fn beefy_importing_blocks() {
 		block_on(block_import.import_block(params(block, None), HashMap::new())).unwrap(),
 		ImportResult::AlreadyInChain
 	);
-	// Verify no justifications present:
+	// Verify no BEEFY justifications present:
 	{
 		// none in backend,
-		assert!(full_client.justifications(&block_id).unwrap().is_none());
+		assert_eq!(
+			full_client
+				.justifications(&block_id)
+				.unwrap()
+				.and_then(|j| j.get(BEEFY_ENGINE_ID).cloned()),
+			None
+		);
 		// and none sent to BEEFY worker.
 		block_on(poll_fn(move |cx| {
 			assert_eq!(justif_recv.poll_next_unpin(cx), Poll::Pending);
@@ -787,11 +793,18 @@ fn beefy_importing_blocks() {
 			..Default::default()
 		}),
 	);
-	// Verify justification successfully imported:
+	// Verify BEEFY justification successfully imported:
 	{
-		// available in backend,
-		assert!(full_client.justifications(&BlockId::Number(block_num)).unwrap().is_some());
-		// and also sent to BEEFY worker.
+		// still not in backend (worker is responsible for appending to backend),
+		assert_eq!(
+			full_client
+				.justifications(&block_id)
+				.unwrap()
+				.and_then(|j| j.get(BEEFY_ENGINE_ID).cloned()),
+			None
+		);
+		// but sent to BEEFY worker
+		// (worker will append it to backend when all previous mandatory justifs are there as well).
 		block_on(poll_fn(move |cx| {
 			match justif_recv.poll_next_unpin(cx) {
 				Poll::Ready(Some(_justification)) => (),
@@ -823,10 +836,16 @@ fn beefy_importing_blocks() {
 			..Default::default()
 		}),
 	);
-	// Verify bad justifications was not imported:
+	// Verify bad BEEFY justifications was not imported:
 	{
 		// none in backend,
-		assert!(full_client.justifications(&block_id).unwrap().is_none());
+		assert_eq!(
+			full_client
+				.justifications(&BlockId::Number(block_num))
+				.unwrap()
+				.and_then(|j| j.get(BEEFY_ENGINE_ID).cloned()),
+			None
+		);
 		// and none sent to BEEFY worker.
 		block_on(poll_fn(move |cx| {
 			assert_eq!(justif_recv.poll_next_unpin(cx), Poll::Pending);