@Test
public void itReturnsAudioUrlWhenGetFeeds() {

  Feed feed = repository.getFeed(expectedId);
  Episode episode = feed.getEpisodes().get(firstPosition);
  Episode expectedEpisode = new Episode() {
    @Override
    public String getAudioUrl() {
      return "http://example.com/newest_episode.mp3";
    }
  };
  assertThat(episode.getAudioUrl(), is(expectedEpisode.getAudioUrl()));
}