Use seconds.
MODIFY
WalletWasabi.Tests/UnitTests/BlockNotifierTests.cs
WalletWasabi.Tests/UnitTests/BlockNotifierTests.cs
@@ -111,7 +111,7 @@ namespace WalletWasabi.Tests.UnitTests
notifier.TriggerRound();
// Wait at most 1500 ms or until cts is canceled
- await WaitForCancelSignalAsync(TimeSpan.FromMilliseconds(1500), cts.Token).ConfigureAwait(false);
+ await WaitForCancelSignalAsync(TimeSpan.FromSeconds(1.5), cts.Token).ConfigureAwait(false);
Assert.True(string.IsNullOrEmpty(message), message);

Use seconds.