    @Test
    public void testRhymesWithSuccess() {

        Response<RhymesResponse> response = Response.success(new RhymesResponse(new Rhymes(
                Arrays.asList("hi", "bye", "sigh"))));

        String word = "high";

        when(apiService.rhymes(word)).thenReturn(Observable.just(response));

        Pair<String, Response<RhymesResponse>> pair =
                wordsApiDataProvider.rhymes(word).toBlocking().single();

        assertNotNull(pair);
        assertEquals(word, pair.first);
        assertEquals(3, pair.second.body().rhymesObject().list().size());
    }