def test_notify_eventually(self):
dn = gui.DelayedNotification(timeout=500)
call = Mock()
dn.notification.connect(call)
dn.changed()
self.process_events(lambda: True, timeout=1)
self.assertIsNone(call.call_args) # no immediate notification
self.process_events(lambda: call.call_args is not None)
def test_delay_by_change(self):
dn = gui.DelayedNotification(timeout=500)
call = Mock()
dn.notification.connect(call)
timer = QTimer()
timer.timeout.connect(dn.changed)
timer.start(100)
dn.changed()
# notification should never be emitted as the input changes too fast
with self.assertRaises(TimeoutError):
self.process_events(lambda: call.call_args is not None, timeout=1000)
def test_no_notification_on_no_change(self):
dn = gui.DelayedNotification(timeout=500)
call = Mock()
dn.notification.connect(call)
dn.changed(42)
dn.notify_immediately() # only for faster test
self.process_events(lambda: call.call_args is not None) # wait for the first call
dn.changed(43)
dn.changed(42)
# notification should not be called again
with self.assertRaises(TimeoutError):
self.process_events(lambda: len(call.call_args_list) > 1, timeout=1000)
def test_immediate(self):
dn = gui.DelayedNotification(timeout=5000)
call = Mock()
dn.notification.connect(call)
dn.notify_immediately()
self.process_events(lambda: call.call_args is not None, timeout=1)