class TestLED(TestCase):
PIN = 20
BRIGHTNESS = 75
def setUp(self):
from datacom.week02 import LED
MockRPi.GPIO.reset_mock()
self.uut = LED(self.PIN, self.BRIGHTNESS)
@patch("datacom.week01.LED.__init__")
def test_init(self, mock_super):
from datacom.week01 import LED as BaseLED
from datacom.week02 import LED
assert self.uut._brightness == self.BRIGHTNESS, "Brightness member variable set incorrectly"
self.assertEqual(self.uut._pwm, MockRPi.GPIO.PWM(),
"PWM protected member variable not set correctly")
assert MockRPi.GPIO.PWM.call_args_list[0] == call(
self.PIN, 1000), "PWM object not setup correctly"
self.uut._pwm.start.assert_called_once_with(
0), "Missing call to start PWM object"
MockRPi.reset_mock()
led = LED(self.PIN)
assert isinstance(led, BaseLED), "Invalid class inheritance"
assert led._brightness == 100, "Brightness member variable default value incorrect"
mock_super.assert_called_once_with(
self.PIN), "Missing call to superclass init"
def test_brightness(self):
from datacom.week02 import LED
self.assertIsInstance(LED.brightness, property,
"LED.brightness is not a property")
self.assertEqual(self.uut.brightness, self.BRIGHTNESS,
"LED.brightness getter failed")
MockRPi.reset_mock()
self.uut.brightness = 34
self.assertEqual(self.uut.brightness, 34,
"LED.brightness setter failed")
self.assertEqual(self.uut._brightness, 34,
"LED.brightness setter failed")
self.uut._pwm.ChangeDutyCycle.assert_called_once_with(34)
def test_on(self):
MockRPi.reset_mock()
self.uut.on()
self.uut._pwm.start.assert_called_once_with(
self.BRIGHTNESS), "Missing call to start PWM object"
def test_off(self):
self.uut.off()
self.uut._pwm.stop.assert_called_once_with(
), "Missing call to stop PWM object"
def test_del(self):
from datacom.week02 import LED
led = LED(self.PIN)
del led
self.uut._pwm.stop.assert_called_once_with(
), "Missing call to stop PWM object"
def test_init(self, mock_super):
from datacom.week01 import LED as BaseLED
from datacom.week02 import LED
assert self.uut._brightness == self.BRIGHTNESS, "Brightness member variable set incorrectly"
self.assertEqual(self.uut._pwm, MockRPi.GPIO.PWM(),
"PWM protected member variable not set correctly")
assert MockRPi.GPIO.PWM.call_args_list[0] == call(
self.PIN, 1000), "PWM object not setup correctly"
self.uut._pwm.start.assert_called_once_with(
0), "Missing call to start PWM object"
MockRPi.reset_mock()
led = LED(self.PIN)
assert isinstance(led, BaseLED), "Invalid class inheritance"
assert led._brightness == 100, "Brightness member variable default value incorrect"
mock_super.assert_called_once_with(
self.PIN), "Missing call to superclass init"
def setUp(self):
from datacom.week02 import LED
MockRPi.GPIO.reset_mock()
self.uut = LED(self.PIN, self.BRIGHTNESS)
def test_del(self):
from datacom.week02 import LED
led = LED(self.PIN)
del led
self.uut._pwm.stop.assert_called_once_with(
), "Missing call to stop PWM object"