@Test
public void testGetVideoById() {

    VideoMetadataInfoEntity fakeVideoMetadataInfoEntity = createVideoMetadataInfoEntity();
    Observable<VideoMetadataInfoEntity> fakeObservable = Observable.just( fakeVideoMetadataInfoEntity );
    given( mockVideoApi.getVideoById( FAKE_VIDEO_ID ) ).willReturn( fakeObservable );
    masterBackendVideoDataStore.getVideoById(FAKE_VIDEO_ID);
    verify( mockVideoApi ).getVideoById( FAKE_VIDEO_ID );
}