def test_internal_tags(s):
        pl = Playlist(s.temp, "playlist")
        pl.extend(s.TWO_SONGS)

        s.failIfEqual(pl.comma("~long-length"), "")
        s.failIfEqual(pl.comma("~tracks"), "")
        s.failIfEqual(pl.comma("~discs"), "")
        s.failUnlessEqual(pl.comma("~foo"), "")

        s.failUnlessEqual(pl.comma(""), "")
        s.failUnlessEqual(pl.comma("~"), "")
        s.failUnlessEqual(pl.get("~#"), "")
    def test_internal_tags(s):
        pl = Playlist(s.temp, "playlist")
        pl.extend(s.TWO_SONGS)

        s.failIfEqual(pl.comma("~long-length"), "")
        s.failIfEqual(pl.comma("~tracks"), "")
        s.failIfEqual(pl.comma("~discs"), "")
        s.failUnlessEqual(pl.comma("~foo"), "")

        s.failUnlessEqual(pl.comma(""), "")
        s.failUnlessEqual(pl.comma("~"), "")
        s.failUnlessEqual(pl.get("~#"), "")
        pl.delete()