def test_notify(self):
hardware_device = Mock()
hardware_device.read = Mock(return_value=0)
sensor_group = DigitalSensorGroup(1, hardware_device)
sensor = DigitalSensor("test", sensor_group, 0)
assert sensor.state == DigitalSensor.HIGH
hardware_device.read = Mock(return_value=1)
sensor_group.notify(self)
assert sensor.state == DigitalSensor.LOW
def test_observer(self):
hardware_device = Mock()
hardware_device.read = Mock(return_value=0)
observer = Mock()
sensor_group = DigitalSensorGroup(8, hardware_device)
sensor_group.register_observer(observer, 0)
sensor_group.notify(hardware_device)
sensor_group._get_state(0)
hardware_device.read = Mock(return_value=1)
sensor_group.notify(hardware_device)
sensor_group._get_state(0)
observer.notify.assert_called_once_with(sensor_group)
observer.notify.reset_mock()
hardware_device.read = Mock(return_value=4)
sensor_group.notify(hardware_device)
sensor_group._get_state(0)
hardware_device.read = Mock(return_value=5)
sensor_group.notify(hardware_device)
sensor_group._get_state(0)
hardware_device.read = Mock(return_value=7)
sensor_group.notify(hardware_device)
sensor_group._get_state(0)
observer.notify.assert_called_once_with(sensor_group)
observer.notify.reset_mock()