public void Enqueue_ImageQueueChangesEventFired()
{
var savedImages = new[] { A.Dummy <ISavedImage>() };
_testScheduler.ScheduleAsync(TimeSpan.FromTicks(5), (s, t) => _sut.Enqueue(savedImages));
ITestableObserver <ImageQueueChangedEvent> imageQueueChanges = _testScheduler.Start(() => _sut.ImageQueueChanges, 0, 0, 100);
imageQueueChanges.Messages.Should().HaveCount(1);
A.CallTo(() => _innerQueue.Enqueue(savedImages)).MustHaveHappened();
}
public async Task Enqueue(IEnumerable <ISavedImage> savedImages)
{
await _imageQueue.Enqueue(savedImages);
_queueChanges.OnNext(new ImageQueueChangedEvent());
}