public void Clear_ImageQueueChangesEventFired()
{
_testScheduler.ScheduleAsync(TimeSpan.FromTicks(5), (s, t) => _sut.Clear());
ITestableObserver <ImageQueueChangedEvent> imageQueueChanges = _testScheduler.Start(() => _sut.ImageQueueChanges, 0, 0, 100);
imageQueueChanges.Messages.Should().HaveCount(1);
A.CallTo(() => _innerQueue.Clear()).MustHaveHappened();
}
public async Task Clear()
{
await _imageQueue.Clear();
_queueChanges.OnNext(new ImageQueueChangedEvent());
}