def test_clear_playlist_nonexistent(capfd):
player = VideoPlayer()
player.clear_playlist("my_cool_playlist")
out, err = capfd.readouterr()
lines = out.splitlines()
assert len(lines) == 1
assert "Cannot clear playlist my_cool_playlist: Playlist does not exist" in lines[0]
def test_clear_playlist(capfd):
player = VideoPlayer()
player.create_playlist("my_cool_playlist")
player.add_to_playlist("my_cool_playlist", "amazing_cats_video_id")
player.show_playlist("my_cool_playlist")
player.clear_playlist("my_COOL_playlist")
player.show_playlist("my_cool_playlist")
out, err = capfd.readouterr()
lines = out.splitlines()
assert len(lines) == 7
assert "Successfully created new playlist: my_cool_playlist" in lines[0]
assert "Added video to my_cool_playlist: Amazing Cats" in lines[1]
assert "Showing playlist: my_cool_playlist" in lines[2]
assert "Amazing Cats (amazing_cats_video_id) [#cat #animal]" in lines[3]
assert "Successfully removed all videos from my_COOL_playlist" in lines[4]
assert "Showing playlist: my_cool_playlist" in lines[5]
assert "No videos here yet" in lines[6]