def test_backend_get_digital_state() -> None:
"""Test that we can read back the digital state of a pin."""
backend = SBArduinoHardwareBackend("COM0", SBArduinoSerial)
# This should put the pin into the most recent (or default) output state.
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_OUTPUT)
assert backend.get_gpio_pin_digital_state(2) is False
backend.write_gpio_pin_digital_state(2, True)
assert backend.get_gpio_pin_digital_state(2) is True
backend.write_gpio_pin_digital_state(2, False)
assert backend.get_gpio_pin_digital_state(2) is False
def test_backend_write_digital_state() -> None:
"""Test that we can write the digital state of a pin."""
backend = SBArduinoHardwareBackend("COM0", SBArduinoSerial)
serial = cast(SBArduinoSerial, backend._serial)
serial.check_data_sent_by_constructor()
# This should put the pin into the most recent (or default) output state.
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_OUTPUT)
serial.check_sent_data(b"W 2 L\n")
backend.write_gpio_pin_digital_state(2, True)
serial.check_sent_data(b"W 2 H\n")
backend.write_gpio_pin_digital_state(2, False)
serial.check_sent_data(b"W 2 L\n")
serial.check_all_received_data_consumed()
def test_backend_digital_state_persists() -> None:
"""Test switching to a different mode and then back to output."""
backend = SBArduinoHardwareBackend("COM0", SBArduinoSerial)
serial = cast(SBArduinoSerial, backend._serial)
serial.check_data_sent_by_constructor()
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_OUTPUT)
serial.check_sent_data(b"W 2 L\n")
backend.write_gpio_pin_digital_state(2, True)
serial.check_sent_data(b"W 2 H\n")
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_INPUT)
serial.check_sent_data(b"W 2 Z\n")
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_OUTPUT)
serial.check_sent_data(b"W 2 H\n")
backend.write_gpio_pin_digital_state(2, False)
serial.check_sent_data(b"W 2 L\n")
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_INPUT)
serial.check_sent_data(b"W 2 Z\n")
backend.set_gpio_pin_mode(2, GPIOPinMode.DIGITAL_OUTPUT)
serial.check_sent_data(b"W 2 L\n")
serial.check_all_received_data_consumed()
def test_backend_write_digital_state_requires_digital_pin() -> None:
"""Check that pins 14-19 are not supported by write digital state."""
backend = SBArduinoHardwareBackend("COM0", SBArduinoSerial)
with pytest.raises(NotSupportedByHardwareError):
backend.write_gpio_pin_digital_state(14, True)
def test_backend_write_digital_state_requires_pin_mode() -> None:
"""Check that pin must be in DIGITAL_OUTPUT mode for write digital state to work."""
backend = SBArduinoHardwareBackend("COM0", SBArduinoSerial)
assert backend.get_gpio_pin_mode(2) is not GPIOPinMode.DIGITAL_OUTPUT
with pytest.raises(ValueError):
backend.write_gpio_pin_digital_state(2, True)