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import pytest
from notifier import Notifier
from player_mock import Player
@pytest.fixture
def mockPlayer():
return Player()
@pytest.fixture
def uut(mockPlayer):
return Notifier(mockPlayer)
def test_allEvents(uut):
def checkEvent(uut, event):
callbacks = 2
calledFlags = [False] * callbacks
values = [None] * callbacks
def createCallback(i):
def cb(value):
nonlocal calledFlags, values
calledFlags[i] = True
values[i] = value
return cb
for i in range(0, callbacks):
uut.registerCallback(event, createCallback(i))
assert not any(calledFlags)
uut.notify(event, 123)
assert all(calledFlags)
assert values == [123] * callbacks
checkEvent(uut, Notifier.PLAYING_STATE_EVENT)
checkEvent(uut, Notifier.PLAYBACK_VOLUME_EVENT)
checkEvent(uut, Notifier.PLAYBACK_RATE_EVENT)
checkEvent(uut, Notifier.CURRENT_SONG_EVENT)
checkEvent(uut, Notifier.CURRENT_AB_EVENT)
checkEvent(uut, Notifier.AB_LIMIT_ENABLED_EVENT)
def test_eventWithoutRegisteredCallbacks(uut):
uut.notify(Notifier.PLAYING_STATE_EVENT, 0)
# expect no crash
def test_eventsWithMockPlayer(uut, mockPlayer):
def checkEvent(eventCode, simulateEvent, expectedValue):
called = False
receivedValue = None
def callback(value):
nonlocal called, receivedValue
called = True
receivedValue = value
uut.registerCallback(eventCode, callback)
assert not called
simulateEvent()
assert called
assert receivedValue == expectedValue
mockPlayer.state = 1
mockPlayer.volume = 75
checkEvent(Notifier.PLAYING_STATE_EVENT, mockPlayer.simulatePlayingStateChanged, True)
checkEvent(Notifier.PLAYBACK_VOLUME_EVENT, mockPlayer.simulatePlaybackVolumeChanged, 75)
def test_singleEventNotification(uut):
playingStateCalled = False
def playingStateCallback(value):
nonlocal playingStateCalled
playingStateCalled = True
volumeCalled = False
def volumeCallback(value):
nonlocal volumeCalled
volumeCalled = True
uut.registerCallback(Notifier.PLAYING_STATE_EVENT, playingStateCallback)
uut.registerCallback(Notifier.PLAYBACK_VOLUME_EVENT, volumeCallback)
assert not playingStateCalled
assert not volumeCalled
uut.notify(Notifier.PLAYING_STATE_EVENT, 0)
assert playingStateCalled
assert not volumeCalled
playingStateCalled = False
uut.notify(Notifier.PLAYBACK_VOLUME_EVENT, 0)
assert not playingStateCalled
assert volumeCalled
volumeCalled = False
uut.notify(Notifier.PLAYBACK_RATE_EVENT, 0)
assert not playingStateCalled
assert not volumeCalled
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