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