Motivation:
2b65258568 only partially addressed the synchronization issues that are present in FlowControlHandlerTest. A few tests are attempting to validate state changes made across an EventLoop thread and the JUnit thread but are not properly synchronized.
Modifications:
- Ensure that conditions which verify expectations set in another thread have synchronization gates to ensure the event has actually occurred.
- Remove the message counter verification in favor of using individual CountDownLatch objects
Result:
FLowControlHanderTest has less race conditions which may lead to test failures.
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