在改装中使用call<t>对象时进行本地单元测试

我有以下单元测试:

@Test
    fun loadMovieTrailer() {
        val video = Video("id", "name", "site",
                "videoId", 20, "type")

        val observableResponse =
                Observable.just(MovieApi.VideoWrapper(Lists.newArrayList(video)))
        `when`(movieApi.trailers(anyString())).thenReturn(observableResponse)


        with(viewModel) {
            assertFalse(isTrailersVisible.get())

            showTrailers(movie)

            assertTrue(isTrailersVisible.get())
            assertFalse(trailers.isEmpty())
            assertTrue(trailers.size == 1)
        }
    }

这就是 movieApi.trailers 改进API方法:

@GET("3/movie/{movieId}/videos")
    fun trailers(@Path("movieId") movieId: String): Observable<VideoWrapper>

我在movieapi中有另一个方法,我想为它编写一个测试:

@GET("3/discover/movie?language=en&sort_by=popularity.desc")
    fun popularMovies(@Query("page") page: Int): Call<MovieWrapper>

你看到它回来了 Call<T> 对象而不是 Observable . 如何在测试方法中替换以下部件?

Observable.just(MovieApi.VideoWrapper(Lists.newArrayList(video)))
            `when`(movieApi.trailers(anyString())).thenReturn(observableResponse)

完整示例代码可在以下位置找到: https://github.com/Ali-Rezaei/TMDb-Paging