Fixed test issuing non-serialized messages to the subject. #1973
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Should resolve the test failure of #1972 .
When the main part of the test succeded, an onCompleted was sent out from the main thread which was not serialized in respect to the onNext(1) issued from the worker thread, therefore, two replay was attempted sometimes. At first the caughtUp was seen false, the replay was entered but the next instruction cleared the index causing the IllegalStateException.