def test__add_disconnects_signal_if_manager_is_disabled(self):
manager = SignalsManager()
manager.disable()
signal = self.make_Signal()
manager.add(signal)
self.assertThat(signal.connect, MockNotCalled())
self.assertThat(signal.disconnect, MockCalledOnceWith())
def test__remove_removes_the_signal(self):
manager = SignalsManager()
signal = self.make_Signal()
manager.add(signal)
manager.remove(signal)
self.assertThat(manager._signals, HasLength(0))
self.assertThat(signal.connect, MockNotCalled())
self.assertThat(signal.disconnect, MockNotCalled())
def test__disable_disables_all_signals(self):
manager = SignalsManager()
signals = [self.make_Signal(), self.make_Signal()]
for signal in signals:
manager.add(signal)
manager.disable()
self.assertThat(
signals,
AllMatch(
MatchesAll(
AfterPreprocessing((lambda signal: signal.connect),
MockNotCalled()),
AfterPreprocessing((lambda signal: signal.disconnect),
MockCalledOnceWith()),
)))
def test__add_adds_the_signal(self):
manager = SignalsManager()
signal = self.make_Signal()
self.assertThat(manager.add(signal), Is(signal))
self.assertThat(manager._signals, Equals({signal}))
# The manager is in its "new" state, neither enabled nor disabled, so
# the signal is not asked to connect or disconnect yet.
self.assertThat(signal.connect, MockNotCalled())
self.assertThat(signal.disconnect, MockNotCalled())
