mopidy/tests/backends/base/current_playlist.py
2012-10-16 14:43:31 +02:00

292 lines
11 KiB
Python

import mock
import random
from pykka.registry import ActorRegistry
from mopidy import audio, core
from mopidy.core import PlaybackState
from mopidy.models import CpTrack, Playlist, Track
from tests.backends.base import populate_playlist
class CurrentPlaylistControllerTest(object):
tracks = []
def setUp(self):
self.audio = mock.Mock(spec=audio.Audio)
self.backend = self.backend_class.start(audio=self.audio).proxy()
self.core = core.Core(audio=audio, backend=self.backend)
self.controller = self.core.current_playlist
self.playback = self.core.playback
assert len(self.tracks) == 3, 'Need three tracks to run tests.'
def tearDown(self):
ActorRegistry.stop_all()
def test_length(self):
self.assertEqual(0, len(self.controller.cp_tracks))
self.assertEqual(0, self.controller.length)
self.controller.append(self.tracks)
self.assertEqual(3, len(self.controller.cp_tracks))
self.assertEqual(3, self.controller.length)
def test_add(self):
for track in self.tracks:
cp_track = self.controller.add(track)
self.assertEqual(track, self.controller.tracks[-1])
self.assertEqual(cp_track, self.controller.cp_tracks[-1])
self.assertEqual(track, cp_track.track)
def test_add_at_position(self):
for track in self.tracks[:-1]:
cp_track = self.controller.add(track, 0)
self.assertEqual(track, self.controller.tracks[0])
self.assertEqual(cp_track, self.controller.cp_tracks[0])
self.assertEqual(track, cp_track.track)
@populate_playlist
def test_add_at_position_outside_of_playlist(self):
test = lambda: self.controller.add(
self.tracks[0], len(self.tracks) + 2)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_get_by_cpid(self):
cp_track = self.controller.cp_tracks[1]
self.assertEqual(cp_track, self.controller.get(cpid=cp_track.cpid))
@populate_playlist
def test_get_by_uri(self):
cp_track = self.controller.cp_tracks[1]
self.assertEqual(cp_track, self.controller.get(uri=cp_track.track.uri))
@populate_playlist
def test_get_by_uri_raises_error_for_invalid_uri(self):
test = lambda: self.controller.get(uri='foobar')
self.assertRaises(LookupError, test)
@populate_playlist
def test_clear(self):
self.controller.clear()
self.assertEqual(len(self.controller.tracks), 0)
def test_clear_empty_playlist(self):
self.controller.clear()
self.assertEqual(len(self.controller.tracks), 0)
@populate_playlist
def test_clear_when_playing(self):
self.playback.play()
self.assertEqual(self.playback.state, PlaybackState.PLAYING)
self.controller.clear()
self.assertEqual(self.playback.state, PlaybackState.STOPPED)
def test_get_by_uri_returns_unique_match(self):
track = Track(uri='a')
self.controller.append([Track(uri='z'), track, Track(uri='y')])
self.assertEqual(track, self.controller.get(uri='a')[1])
def test_get_by_uri_raises_error_if_multiple_matches(self):
track = Track(uri='a')
self.controller.append([Track(uri='z'), track, track])
try:
self.controller.get(uri='a')
self.fail(u'Should raise LookupError if multiple matches')
except LookupError as e:
self.assertEqual(u'"uri=a" match multiple tracks', e[0])
def test_get_by_uri_raises_error_if_no_match(self):
self.controller.playlist = Playlist(
tracks=[Track(uri='z'), Track(uri='y')])
try:
self.controller.get(uri='a')
self.fail(u'Should raise LookupError if no match')
except LookupError as e:
self.assertEqual(u'"uri=a" match no tracks', e[0])
def test_get_by_multiple_criteria_returns_elements_matching_all(self):
track1 = Track(uri='a', name='x')
track2 = Track(uri='b', name='x')
track3 = Track(uri='b', name='y')
self.controller.append([track1, track2, track3])
self.assertEqual(track1, self.controller.get(uri='a', name='x')[1])
self.assertEqual(track2, self.controller.get(uri='b', name='x')[1])
self.assertEqual(track3, self.controller.get(uri='b', name='y')[1])
def test_get_by_criteria_that_is_not_present_in_all_elements(self):
track1 = Track()
track2 = Track(uri='b')
track3 = Track()
self.controller.append([track1, track2, track3])
self.assertEqual(track2, self.controller.get(uri='b')[1])
def test_append_appends_to_the_current_playlist(self):
self.controller.append([Track(uri='a'), Track(uri='b')])
self.assertEqual(len(self.controller.tracks), 2)
self.controller.append([Track(uri='c'), Track(uri='d')])
self.assertEqual(len(self.controller.tracks), 4)
self.assertEqual(self.controller.tracks[0].uri, 'a')
self.assertEqual(self.controller.tracks[1].uri, 'b')
self.assertEqual(self.controller.tracks[2].uri, 'c')
self.assertEqual(self.controller.tracks[3].uri, 'd')
def test_append_does_not_reset_version(self):
version = self.controller.version
self.controller.append([])
self.assertEqual(self.controller.version, version)
@populate_playlist
def test_append_preserves_playing_state(self):
self.playback.play()
track = self.playback.current_track
self.controller.append(self.controller.tracks[1:2])
self.assertEqual(self.playback.state, PlaybackState.PLAYING)
self.assertEqual(self.playback.current_track, track)
@populate_playlist
def test_append_preserves_stopped_state(self):
self.controller.append(self.controller.tracks[1:2])
self.assertEqual(self.playback.state, PlaybackState.STOPPED)
self.assertEqual(self.playback.current_track, None)
def test_index_returns_index_of_track(self):
cp_tracks = []
for track in self.tracks:
cp_tracks.append(self.controller.add(track))
self.assertEquals(0, self.controller.index(cp_tracks[0]))
self.assertEquals(1, self.controller.index(cp_tracks[1]))
self.assertEquals(2, self.controller.index(cp_tracks[2]))
def test_index_raises_value_error_if_item_not_found(self):
test = lambda: self.controller.index(CpTrack(0, Track()))
self.assertRaises(ValueError, test)
@populate_playlist
def test_move_single(self):
self.controller.move(0, 0, 2)
tracks = self.controller.tracks
self.assertEqual(tracks[2], self.tracks[0])
@populate_playlist
def test_move_group(self):
self.controller.move(0, 2, 1)
tracks = self.controller.tracks
self.assertEqual(tracks[1], self.tracks[0])
self.assertEqual(tracks[2], self.tracks[1])
@populate_playlist
def test_moving_track_outside_of_playlist(self):
tracks = len(self.controller.tracks)
test = lambda: self.controller.move(0, 0, tracks + 5)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_move_group_outside_of_playlist(self):
tracks = len(self.controller.tracks)
test = lambda: self.controller.move(0, 2, tracks + 5)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_move_group_out_of_range(self):
tracks = len(self.controller.tracks)
test = lambda: self.controller.move(tracks + 2, tracks + 3, 0)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_move_group_invalid_group(self):
test = lambda: self.controller.move(2, 1, 0)
self.assertRaises(AssertionError, test)
def test_tracks_attribute_is_immutable(self):
tracks1 = self.controller.tracks
tracks2 = self.controller.tracks
self.assertNotEqual(id(tracks1), id(tracks2))
@populate_playlist
def test_remove(self):
track1 = self.controller.tracks[1]
track2 = self.controller.tracks[2]
version = self.controller.version
self.controller.remove(uri=track1.uri)
self.assertLess(version, self.controller.version)
self.assertNotIn(track1, self.controller.tracks)
self.assertEqual(track2, self.controller.tracks[1])
@populate_playlist
def test_removing_track_that_does_not_exist(self):
test = lambda: self.controller.remove(uri='/nonexistant')
self.assertRaises(LookupError, test)
def test_removing_from_empty_playlist(self):
test = lambda: self.controller.remove(uri='/nonexistant')
self.assertRaises(LookupError, test)
@populate_playlist
def test_shuffle(self):
random.seed(1)
self.controller.shuffle()
shuffled_tracks = self.controller.tracks
self.assertNotEqual(self.tracks, shuffled_tracks)
self.assertEqual(set(self.tracks), set(shuffled_tracks))
@populate_playlist
def test_shuffle_subset(self):
random.seed(1)
self.controller.shuffle(1, 3)
shuffled_tracks = self.controller.tracks
self.assertNotEqual(self.tracks, shuffled_tracks)
self.assertEqual(self.tracks[0], shuffled_tracks[0])
self.assertEqual(set(self.tracks), set(shuffled_tracks))
@populate_playlist
def test_shuffle_invalid_subset(self):
test = lambda: self.controller.shuffle(3, 1)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_shuffle_superset(self):
tracks = len(self.controller.tracks)
test = lambda: self.controller.shuffle(1, tracks + 5)
self.assertRaises(AssertionError, test)
@populate_playlist
def test_shuffle_open_subset(self):
random.seed(1)
self.controller.shuffle(1)
shuffled_tracks = self.controller.tracks
self.assertNotEqual(self.tracks, shuffled_tracks)
self.assertEqual(self.tracks[0], shuffled_tracks[0])
self.assertEqual(set(self.tracks), set(shuffled_tracks))
@populate_playlist
def test_slice_returns_a_subset_of_tracks(self):
track_slice = self.controller.slice(1, 3)
self.assertEqual(2, len(track_slice))
self.assertEqual(self.tracks[1], track_slice[0].track)
self.assertEqual(self.tracks[2], track_slice[1].track)
@populate_playlist
def test_slice_returns_empty_list_if_indexes_outside_tracks_list(self):
self.assertEqual(0, len(self.controller.slice(7, 8)))
self.assertEqual(0, len(self.controller.slice(-1, 1)))
def test_version_does_not_change_when_appending_nothing(self):
version = self.controller.version
self.controller.append([])
self.assertEquals(version, self.controller.version)
def test_version_increases_when_appending_something(self):
version = self.controller.version
self.controller.append([Track()])
self.assertLess(version, self.controller.version)