func TestSubtitlesFirst(t *testing.T) {
subtitles := opensubtitles.Subtitles{
opensubtitles.Subtitle{},
opensubtitles.Subtitle{},
}
assert.Len(t, subtitles, 2)
assert.NotNil(t, subtitles.First(), 0)
}
func TestGetFirst(t *testing.T) {
subtitles := opensubtitles.Subtitles{}
assert.Len(t, subtitles, 0)
assert.Nil(t, subtitles.First())
}