CODEWITHSUNDEEP
c#wpfunit-testingsystem.reactivedispatcher
José F. Romaniello
José F. Romaniello

Reputation: 14156

Unit testing something with ObserveOnDispatcher

I've some code in my view model as follows:

miService.GetSomething(par1, par2)
.ObserveOnDispatcher()
.Subscribe(dt =>
 {
    DoSomething(dt);
 });

Then in my test, I'm "mocking" my service as follows:

miService.Setup(ms => ms.GetSomething(....))
.Returns(Observable.Return(XYZ));

The problem is that due to the ObserveOnDispatcher, the subscribe delegate is never executed.

I've seen some code with DispatcherFrame and PushFrame, but the problem is that I don't know "where", I can call 

frame.Continue = false;

Upvotes: 2

Views: 1587

Answers (1)

Samuel Jack
Samuel Jack

Reputation: 33270

You could try

var frame = new DispatcherFrame();
Dispatcher.CurrentDispatcher.BeginInvoke(
  DispatcherPriority.Background, 
  new Action(() => frame.Continue = false));
Dispatcher.PushFrame(frame);

Upvotes: 5

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