Unit Test - Verify Observable is subscribed

Question

I have got the java code like this

 mDataManager.getObservable(\"hello\").subscribe( subscriber );

and I want to verify the follow

Answer 1

I spent hours today and realize it was a silly mistake. Please check your @PrepareForTest if you are using PowerMockito.

@PrepareForTest({Observable.class})

also don't forget to mock it. I did it on @before :

PowerMockito.mockStatic(Observable.class);

I hope it can help. Thank you