fix test (#3683)

Summary
The TestPseudonodeFailedEnqueuedTasks test wasn't accounting correctly for errPseudonodeBacklogFull errors.

Test Plan
Run 1000 times localy. I was able to reproduce it consistently.

1 files changed, 6 insertions, 5 deletions

diff --git a/agreement/pseudonode_test.go b/agreement/pseudonode_test.go
index b4209ffde..dfb9f2ce1 100644
--- a/agreement/pseudonode_test.go
+++ b/agreement/pseudonode_test.go
@@ -520,11 +520,12 @@ func TestPseudonodeFailedEnqueuedTasks(t *testing.T) {
 	for i := 0; i < pseudonodeVerificationBacklog*2; i++ {
 		ch, err = pb.MakeProposals(context.Background(), startRound, period(i))
 		if err != nil {
-			require.Subset(t, []int{pseudonodeVerificationBacklog, pseudonodeVerificationBacklog + 1}, []int{i})
+			require.ErrorAs(t, errPseudonodeBacklogFull, &err)
 			break
 		}
 		channels = append(channels, ch)
 	}
+	enqueuedProposals := len(channels)
 	require.Error(t, err, "MakeProposals did not returned an error when being overflowed with requests")
 	require.True(t, errors.Is(err, errPseudonodeBacklogFull))
 
@@ -533,17 +534,17 @@ func TestPseudonodeFailedEnqueuedTasks(t *testing.T) {
 	for i := 0; i < pseudonodeVerificationBacklog*2; i++ {
 		ch, err = pb.MakeVotes(context.Background(), startRound, period(i), step(i%5), makeProposalValue(period(i), accounts[0].Address()), persist)
 		if err != nil {
-			require.Subset(t, []int{pseudonodeVerificationBacklog, pseudonodeVerificationBacklog + 1}, []int{i})
+			require.ErrorAs(t, errPseudonodeBacklogFull, &err)
 			break
 		}
 		channels = append(channels, ch)
 	}
 	require.Error(t, err, "MakeVotes did not returned an error when being overflowed with requests")
-
+	enqueuedVotes := len(channels) - enqueuedProposals
 	// drain output channels.
 	for _, ch := range channels {
 		drainChannel(ch)
 	}
-	require.Equal(t, 330, subStrLogger.instancesFound[0])
-	require.Equal(t, 330, subStrLogger.instancesFound[1])
+	require.Equal(t, enqueuedVotes*len(accounts), subStrLogger.instancesFound[0])
+	require.Equal(t, enqueuedProposals*len(accounts), subStrLogger.instancesFound[1])
 }