cleanupTestCoroutines
Called after the test completes.
It checks that there were no uncaught exceptions caught by its CoroutineExceptionHandler. If there were any, then the first one is thrown, whereas the rest are suppressed by it.
It runs the tasks pending in the scheduler at the current time. If there are any uncompleted tasks afterwards, it fails with UncompletedCoroutinesError.
It checks whether some new child Jobs were created but not completed since this TestCoroutineScope was created. If so, it fails with UncompletedCoroutinesError.
For backward compatibility, if the CoroutineExceptionHandler is an UncaughtExceptionCaptor, its TestCoroutineExceptionHandler.cleanupTestCoroutines behavior is performed. Likewise, if the ContinuationInterceptor is a DelayController, its DelayController.cleanupTestCoroutines is called.
Throws
the first uncaught exception, if there are any uncaught exceptions.
if any pending tasks are active.
if called more than once.