@Test
public void downloadYouTubeVideo_VideoUploadFailed_ReturnsNull() {

    MockInterceptor okHttpMockInterceptor = new MockInterceptor();
    okHttpMockInterceptor.addRule()
            .get()
            .urlStarts("https://jumpcutter.letum.ch/youtube")
            .answer(request -> new Response.Builder().code(404));
    OkHttpClient okHttpClient = new OkHttpClient.Builder()
            .addInterceptor(okHttpMockInterceptor)
            .build();
    ServerWrapper server = new ServerWrapper(okHttpClient, null);
    String videoId = server.downloadYouTubeVideo(null);
    Assert.assertEquals(null, videoId);
}