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mopidy/tests/core/test_playback.py
Thomas Adamcik 0169ce7cad core: Make sure the about-to-finish callback gets run in the actor. 
When about to finish gets called we are running in some GStreamer thread. Our
audio code then calls the shim core callback which is responsible for
transferring our execution to the core actor thread and waiting for the
response. From this point we do normal actor calls to the backend(s) which in
turn call into the audio actor. Since the initial audio code that was called is
outside the actor this should never deadlock due to this loop.
2015-10-06 22:45:06 +02:00

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from __future__ import absolute_import, unicode_literals
import unittest
import mock
import pykka
from mopidy import backend, core
from mopidy.internal import deprecation
from mopidy.models import Track
from tests import dummy_audio
# TODO: Replace this with dummy_backend now that it uses a real
# playbackprovider Since we rely on our DummyAudio to actually emit events we
# need a "real" backend and not a mock so the right calls make it through to
# audio.
class TestBackend(pykka.ThreadingActor, backend.Backend):
uri_schemes = ['dummy']
def __init__(self, config, audio):
super(TestBackend, self).__init__()
self.playback = backend.PlaybackProvider(audio=audio, backend=self)
class BaseTest(unittest.TestCase):
config = {'core': {'max_tracklist_length': 10000}}
tracks = [Track(uri='dummy:a', length=1234),
Track(uri='dummy:b', length=1234),
Track(uri='dummy:c', length=1234)]
def setUp(self): # noqa: N802
# TODO: use create_proxy helpers.
self.audio = dummy_audio.DummyAudio.start().proxy()
self.backend = TestBackend.start(
audio=self.audio, config=self.config).proxy()
self.core = core.Core(
audio=self.audio, backends=[self.backend], config=self.config)
self.playback = self.core.playback
# We don't have a core actor running, so call about to finish directly.
self.audio.set_about_to_finish_callback(
self.playback._on_about_to_finish)
with deprecation.ignore('core.tracklist.add:tracks_arg'):
self.core.tracklist.add(self.tracks)
self.events = []
self.patcher = mock.patch('mopidy.audio.listener.AudioListener.send')
self.send_mock = self.patcher.start()
def send(event, **kwargs):
self.events.append((event, kwargs))
self.send_mock.side_effect = send
def tearDown(self): # noqa: N802
pykka.ActorRegistry.stop_all()
self.patcher.stop()
def replay_events(self, until=None):
while self.events:
if self.events[0][0] == until:
break
event, kwargs = self.events.pop(0)
self.core.on_event(event, **kwargs)
def trigger_about_to_finish(self, replay_until=None):
self.replay_events()
callback = self.audio.get_about_to_finish_callback().get()
callback()
self.replay_events(until=replay_until)
class TestPlayHandling(BaseTest):
def test_get_current_tl_track_play(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.assertEqual(
self.core.playback.get_current_tl_track(), tl_tracks[0])
def test_get_current_track_play(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.assertEqual(
self.core.playback.get_current_track(), self.tracks[0])
def test_get_current_tlid_play(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.assertEqual(
self.core.playback.get_current_tlid(), tl_tracks[0].tlid)
def test_play_skips_to_next_on_unplayable_track(self):
"""Checks that we handle backend.change_track failing."""
tl_tracks = self.core.tracklist.get_tl_tracks()
self.audio.trigger_fake_playback_failure(tl_tracks[0].track.uri)
self.core.playback.play(tl_tracks[0])
self.replay_events()
current_tl_track = self.core.playback.get_current_tl_track()
self.assertEqual(tl_tracks[1], current_tl_track)
def test_play_tlid(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tlid=tl_tracks[1].tlid)
self.replay_events()
current_tl_track = self.core.playback.get_current_tl_track()
self.assertEqual(tl_tracks[1], current_tl_track)
class TestNextHandling(BaseTest):
def test_get_current_tl_track_next(self):
self.core.playback.play()
self.replay_events()
self.core.playback.next()
self.replay_events()
tl_tracks = self.core.tracklist.get_tl_tracks()
current_tl_track = self.core.playback.get_current_tl_track()
self.assertEqual(current_tl_track, tl_tracks[1])
def test_get_pending_tl_track_next(self):
self.core.playback.play()
self.replay_events()
self.core.playback.next()
tl_tracks = self.core.tracklist.get_tl_tracks()
self.assertEqual(self.core.playback._pending_tl_track, tl_tracks[1])
def test_get_current_track_next(self):
self.core.playback.play()
self.replay_events()
self.core.playback.next()
self.replay_events()
current_track = self.core.playback.get_current_track()
self.assertEqual(current_track, self.tracks[1])
def test_next_keeps_finished_track_in_tracklist(self):
tl_track = self.core.tracklist.get_tl_tracks()[0]
self.core.playback.play(tl_track)
self.replay_events()
self.core.playback.next()
self.replay_events()
self.assertIn(tl_track, self.core.tracklist.tl_tracks)
class TestPreviousHandling(BaseTest):
# TODO Test previous() more
def test_get_current_tl_track_prev(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[1])
self.core.playback.previous()
self.replay_events()
self.assertEqual(
self.core.playback.get_current_tl_track(), tl_tracks[0])
def test_get_current_track_prev(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[1])
self.core.playback.previous()
self.replay_events()
self.assertEqual(
self.core.playback.get_current_track(), self.tracks[0])
def test_previous_keeps_finished_track_in_tracklist(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[1])
self.core.playback.previous()
self.replay_events()
self.assertIn(tl_tracks[1], self.core.tracklist.tl_tracks)
def test_previous_keeps_finished_track_even_in_consume_mode(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[1])
self.core.tracklist.consume = True
self.core.playback.previous()
self.replay_events()
self.assertIn(tl_tracks[1], self.core.tracklist.tl_tracks)
class TestPlayUnknownHanlding(BaseTest):
tracks = [Track(uri='unknown:a', length=1234),
Track(uri='dummy:b', length=1234)]
# TODO: move to UnplayableTest?
def test_play_skips_to_next_on_track_without_playback_backend(self):
self.core.playback.play()
self.replay_events()
current_track = self.core.playback.get_current_track()
self.assertEqual(current_track, self.tracks[1])
class OnAboutToFinishTest(BaseTest):
def test_on_about_to_finish_keeps_finished_track_in_tracklist(self):
tl_track = self.core.tracklist.get_tl_tracks()[0]
self.core.playback.play(tl_track)
self.trigger_about_to_finish()
self.assertIn(tl_track, self.core.tracklist.tl_tracks)
class TestConsumeHandling(BaseTest):
def test_next_in_consume_mode_removes_finished_track(self):
tl_track = self.core.tracklist.get_tl_tracks()[0]
self.core.playback.play(tl_track)
self.core.tracklist.consume = True
self.replay_events()
self.core.playback.next()
self.replay_events()
self.assertNotIn(tl_track, self.core.tracklist.get_tl_tracks())
def test_on_about_to_finish_in_consume_mode_removes_finished_track(self):
tl_track = self.core.tracklist.get_tl_tracks()[0]
self.core.playback.play(tl_track)
self.core.tracklist.consume = True
self.trigger_about_to_finish()
self.assertNotIn(tl_track, self.core.tracklist.get_tl_tracks())
class TestCurrentAndPendingTlTrack(BaseTest):
def test_get_current_tl_track_none(self):
self.assertEqual(
self.core.playback.get_current_tl_track(), None)
def test_get_current_tlid_none(self):
self.assertEqual(self.core.playback.get_current_tlid(), None)
def test_pending_tl_track_is_none(self):
self.core.playback.play()
self.replay_events()
self.assertEqual(self.playback._pending_tl_track, None)
def test_pending_tl_track_after_about_to_finish(self):
self.core.playback.play()
self.replay_events()
self.trigger_about_to_finish(replay_until='stream_changed')
self.assertEqual(self.playback._pending_tl_track.track.uri, 'dummy:b')
def test_pending_tl_track_after_stream_changed(self):
self.trigger_about_to_finish()
self.assertEqual(self.playback._pending_tl_track, None)
def test_current_tl_track_after_about_to_finish(self):
self.core.playback.play()
self.replay_events()
self.trigger_about_to_finish(replay_until='stream_changed')
self.assertEqual(self.playback.current_tl_track.track.uri, 'dummy:a')
def test_current_tl_track_after_stream_changed(self):
self.core.playback.play()
self.replay_events()
self.trigger_about_to_finish()
self.assertEqual(self.playback.current_tl_track.track.uri, 'dummy:b')
def test_current_tl_track_after_end_of_stream(self):
self.core.playback.play()
self.replay_events()
self.trigger_about_to_finish()
self.trigger_about_to_finish()
self.trigger_about_to_finish() # EOS
self.assertEqual(self.playback.current_tl_track, None)
@mock.patch(
'mopidy.core.playback.listener.CoreListener', spec=core.CoreListener)
class EventEmissionTest(BaseTest):
def test_play_when_stopped_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'playback_state_changed',
old_state='stopped', new_state='playing'),
mock.call(
'track_playback_started', tl_track=tl_tracks[0]),
])
def test_play_when_paused_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.pause()
self.replay_events()
listener_mock.reset_mock()
self.core.playback.play(tl_tracks[1])
self.replay_events()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=mock.ANY),
mock.call(
'playback_state_changed',
old_state='paused', new_state='playing'),
mock.call(
'track_playback_started', tl_track=tl_tracks[1]),
])
def test_play_when_playing_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
listener_mock.reset_mock()
self.core.playback.play(tl_tracks[2])
self.replay_events()
# TODO: Do we want to emit playing->playing for this case?
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=mock.ANY),
mock.call(
'playback_state_changed', old_state='playing',
new_state='playing'),
mock.call(
'track_playback_started', tl_track=tl_tracks[2]),
])
def test_pause_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.seek(1000)
listener_mock.reset_mock()
self.core.playback.pause()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'playback_state_changed',
old_state='playing', new_state='paused'),
mock.call(
'track_playback_paused',
tl_track=tl_tracks[0], time_position=1000),
])
def test_resume_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.pause()
self.core.playback.seek(1000)
listener_mock.reset_mock()
self.core.playback.resume()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'playback_state_changed',
old_state='paused', new_state='playing'),
mock.call(
'track_playback_resumed',
tl_track=tl_tracks[0], time_position=1000),
])
def test_stop_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.seek(1000)
listener_mock.reset_mock()
self.core.playback.stop()
self.replay_events()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'playback_state_changed',
old_state='playing', new_state='stopped'),
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=1000),
])
def test_next_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.seek(1000)
listener_mock.reset_mock()
self.core.playback.next()
self.replay_events()
# TODO: should we be emitting playing -> playing?
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=mock.ANY),
mock.call(
'track_playback_started', tl_track=tl_tracks[1]),
])
def test_on_end_of_track_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
listener_mock.reset_mock()
self.trigger_about_to_finish()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=mock.ANY),
mock.call(
'track_playback_started', tl_track=tl_tracks[1]),
])
def test_seek_emits_seeked_event(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
listener_mock.reset_mock()
self.core.playback.seek(1000)
listener_mock.send.assert_called_once_with(
'seeked', time_position=1000)
def test_seek_past_end_of_track_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
listener_mock.reset_mock()
self.core.playback.seek(self.tracks[0].length * 5)
self.replay_events()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[0], time_position=mock.ANY),
mock.call(
'track_playback_started', tl_track=tl_tracks[1]),
])
def test_previous_emits_events(self, listener_mock):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[1])
self.replay_events()
listener_mock.reset_mock()
self.core.playback.previous()
self.replay_events()
self.assertListEqual(
listener_mock.send.mock_calls,
[
mock.call(
'track_playback_ended',
tl_track=tl_tracks[1], time_position=mock.ANY),
mock.call(
'track_playback_started', tl_track=tl_tracks[0]),
])
class UnplayableURITest(BaseTest):
def setUp(self): # noqa: N802
super(UnplayableURITest, self).setUp()
self.core.tracklist.clear()
tl_tracks = self.core.tracklist.add([Track(uri='unplayable://')])
self.core.playback._set_current_tl_track(tl_tracks[0])
def test_pause_changes_state_even_if_track_is_unplayable(self):
self.core.playback.pause()
self.assertEqual(self.core.playback.state, core.PlaybackState.PAUSED)
def test_resume_does_nothing_if_track_is_unplayable(self):
self.core.playback.state = core.PlaybackState.PAUSED
self.core.playback.resume()
self.assertEqual(self.core.playback.state, core.PlaybackState.PAUSED)
def test_stop_changes_state_even_if_track_is_unplayable(self):
self.core.playback.state = core.PlaybackState.PAUSED
self.core.playback.stop()
self.assertEqual(self.core.playback.state, core.PlaybackState.STOPPED)
def test_time_position_returns_0_if_track_is_unplayable(self):
result = self.core.playback.time_position
self.assertEqual(result, 0)
def test_seek_fails_for_unplayable_track(self):
self.core.playback.state = core.PlaybackState.PLAYING
success = self.core.playback.seek(1000)
self.assertFalse(success)
class SeekTest(BaseTest):
def test_seek_normalizes_negative_positions_to_zero(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.seek(-100) # Dummy audio doesn't progress time.
self.assertEqual(0, self.core.playback.get_time_position())
def test_seek_fails_for_track_without_duration(self):
track = self.tracks[0].replace(length=None)
self.core.tracklist.clear()
self.core.tracklist.add([track])
self.core.playback.play()
self.replay_events()
self.assertFalse(self.core.playback.seek(1000))
self.assertEqual(0, self.core.playback.get_time_position())
def test_seek_play_stay_playing(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.replay_events()
self.core.playback.seek(1000)
self.assertEqual(self.core.playback.state, core.PlaybackState.PLAYING)
def test_seek_paused_stay_paused(self):
tl_tracks = self.core.tracklist.get_tl_tracks()
self.core.playback.play(tl_tracks[0])
self.core.playback.pause()
self.replay_events()
self.core.playback.seek(1000)
self.assertEqual(self.core.playback.state, core.PlaybackState.PAUSED)
class TestStream(BaseTest):
def test_get_stream_title_before_playback(self):
self.assertEqual(self.playback.get_stream_title(), None)
def test_get_stream_title_during_playback(self):
self.core.playback.play()
self.replay_events()
self.assertEqual(self.playback.get_stream_title(), None)
def test_get_stream_title_during_playback_with_tags_change(self):
self.core.playback.play()
self.audio.trigger_fake_tags_changed({'organization': ['baz']})
self.audio.trigger_fake_tags_changed({'title': ['foobar']}).get()
self.replay_events()
self.assertEqual(self.playback.get_stream_title(), 'foobar')
def test_get_stream_title_after_next(self):
self.core.playback.play()
self.audio.trigger_fake_tags_changed({'organization': ['baz']})
self.audio.trigger_fake_tags_changed({'title': ['foobar']}).get()
self.replay_events()
self.core.playback.next()
self.replay_events()
self.assertEqual(self.playback.get_stream_title(), None)
def test_get_stream_title_after_next_with_tags_change(self):
self.core.playback.play()
self.audio.trigger_fake_tags_changed({'organization': ['baz']})
self.audio.trigger_fake_tags_changed({'title': ['foo']}).get()
self.replay_events()
self.core.playback.next()
self.audio.trigger_fake_tags_changed({'organization': ['baz']})
self.audio.trigger_fake_tags_changed({'title': ['bar']}).get()
self.replay_events()
self.assertEqual(self.playback.get_stream_title(), 'bar')
def test_get_stream_title_after_stop(self):
self.core.playback.play()
self.audio.trigger_fake_tags_changed({'organization': ['baz']})
self.audio.trigger_fake_tags_changed({'title': ['foobar']}).get()
self.replay_events()
self.core.playback.stop()
self.replay_events()
self.assertEqual(self.playback.get_stream_title(), None)
class BackendSelectionTest(unittest.TestCase):
def setUp(self): # noqa: N802
config = {
'core': {
'max_tracklist_length': 10000,
}
}
self.backend1 = mock.Mock()
self.backend1.uri_schemes.get.return_value = ['dummy1']
self.playback1 = mock.Mock(spec=backend.PlaybackProvider)
self.backend1.playback = self.playback1
self.backend2 = mock.Mock()
self.backend2.uri_schemes.get.return_value = ['dummy2']
self.playback2 = mock.Mock(spec=backend.PlaybackProvider)
self.backend2.playback = self.playback2
self.tracks = [
Track(uri='dummy1:a', length=40000),
Track(uri='dummy2:a', length=40000),
]
self.core = core.Core(config, mixer=None, backends=[
self.backend1, self.backend2])
self.tl_tracks = self.core.tracklist.add(self.tracks)
def trigger_stream_changed(self):
pending = self.core.playback._pending_tl_track
if pending:
self.core.stream_changed(uri=pending.track.uri)
else:
self.core.stream_changed(uri=None)
def test_play_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.playback1.prepare_change.assert_called_once_with()
self.playback1.change_track.assert_called_once_with(self.tracks[0])
self.playback1.play.assert_called_once_with()
self.assertFalse(self.playback2.play.called)
def test_play_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.assertFalse(self.playback1.play.called)
self.playback2.prepare_change.assert_called_once_with()
self.playback2.change_track.assert_called_once_with(self.tracks[1])
self.playback2.play.assert_called_once_with()
def test_pause_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.core.playback.pause()
self.playback1.pause.assert_called_once_with()
self.assertFalse(self.playback2.pause.called)
def test_pause_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.core.playback.pause()
self.assertFalse(self.playback1.pause.called)
self.playback2.pause.assert_called_once_with()
def test_resume_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.core.playback.pause()
self.core.playback.resume()
self.playback1.resume.assert_called_once_with()
self.assertFalse(self.playback2.resume.called)
def test_resume_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.core.playback.pause()
self.core.playback.resume()
self.assertFalse(self.playback1.resume.called)
self.playback2.resume.assert_called_once_with()
def test_stop_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.core.playback.stop()
self.trigger_stream_changed()
self.playback1.stop.assert_called_once_with()
self.assertFalse(self.playback2.stop.called)
def test_stop_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.core.playback.stop()
self.trigger_stream_changed()
self.assertFalse(self.playback1.stop.called)
self.playback2.stop.assert_called_once_with()
def test_seek_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.core.playback.seek(10000)
self.playback1.seek.assert_called_once_with(10000)
self.assertFalse(self.playback2.seek.called)
def test_seek_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.core.playback.seek(10000)
self.assertFalse(self.playback1.seek.called)
self.playback2.seek.assert_called_once_with(10000)
def test_time_position_selects_dummy1_backend(self):
self.core.playback.play(self.tl_tracks[0])
self.trigger_stream_changed()
self.core.playback.seek(10000)
self.core.playback.time_position
self.playback1.get_time_position.assert_called_once_with()
self.assertFalse(self.playback2.get_time_position.called)
def test_time_position_selects_dummy2_backend(self):
self.core.playback.play(self.tl_tracks[1])
self.trigger_stream_changed()
self.core.playback.seek(10000)
self.core.playback.time_position
self.assertFalse(self.playback1.get_time_position.called)
self.playback2.get_time_position.assert_called_once_with()
class CorePlaybackWithOldBackendTest(unittest.TestCase):
def test_type_error_from_old_backend_does_not_crash_core(self):
config = {
'core': {
'max_tracklist_length': 10000,
}
}
b = mock.Mock()
b.actor_ref.actor_class.__name__ = 'DummyBackend'
b.uri_schemes.get.return_value = ['dummy1']
b.playback = mock.Mock(spec=backend.PlaybackProvider)
b.playback.play.side_effect = TypeError
b.library.lookup.return_value.get.return_value = [
Track(uri='dummy1:a', length=40000)]
c = core.Core(config, mixer=None, backends=[b])
c.tracklist.add(uris=['dummy1:a'])
c.playback.play() # No TypeError == test passed.
b.playback.play.assert_called_once_with()
class Bug1177RegressionTest(unittest.TestCase):
def test(self):
config = {
'core': {
'max_tracklist_length': 10000,
}
}
b = mock.Mock()
b.uri_schemes.get.return_value = ['dummy']
b.playback = mock.Mock(spec=backend.PlaybackProvider)
b.playback.change_track.return_value.get.return_value = True
b.playback.play.return_value.get.return_value = True
track1 = Track(uri='dummy:a', length=40000)
track2 = Track(uri='dummy:b', length=40000)
c = core.Core(config, mixer=None, backends=[b])
c.tracklist.add([track1, track2])
c.playback.play()
b.playback.change_track.assert_called_once_with(track1)
b.playback.change_track.reset_mock()
c.playback.pause()
c.playback.next()
b.playback.change_track.assert_called_once_with(track2)
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