Source code for tests.test_io_pins

from .pigpio_mocks import patch_pigpio_base, patch_pigpio_gpio, soft_frequencies
from import Pin, PWMOutput
from secrets import token_bytes

import pytest
import random

[docs]@pytest.mark.parametrize("seed", [token_bytes(8) for _ in range(2)]) @pytest.mark.parametrize("gpio", range(53)) def test_mode(patch_pigpio_gpio, seed, gpio): """__________________________________________________________________________________________________________TEST #1 Tests the mode setting & getting methods of Pin - Initializes a Pin - Reads mode off pin (should be random) - Writes a mode to Pin - Reads the mode back from the Pin - Asserts that the first (random) mode read is a valid mode - Asserts that the second mode is the mode we set """ random.seed(seed) mode = random.choice([key for key in Pin._PIGPIO_MODES.keys()]) results = [] pin = Pin(gpio) results.append(pin.mode) if mode == 'Fake Mode': with pytest.raises(ValueError): pin.mode = mode else: pin.mode = mode results.append(pin.mode) assert results[1] == mode assert results[0] in Pin._PIGPIO_MODES """__________________________________________________________________________________________________________ """
[docs]def test_bad_mode_exception(patch_pigpio_gpio): """__________________________________________________________________________________________________________TEST #2 Tests that an exception is thrown if an attempt is made to set an unrecognized mode """ gpio = random.choice(range(53)) mode = 'Fake Mode' pin = Pin(gpio) with pytest.raises(ValueError): pin.mode = mode """__________________________________________________________________________________________________________ """
[docs]@pytest.mark.parametrize("gpio", range(31)) @pytest.mark.parametrize("level", [0, 1]) def test_read_write_toggle(patch_pigpio_gpio, gpio, level): """__________________________________________________________________________________________________________TEST #3 Tests the toggle feature of a Pin - Initializes a random Pin (in User_GPIO) - Sets mode to 'OUTPUT' - Writes a random level to Pin - Reads the pin and stores in results - Writes the level to Pin again - Toggles the Pin - Reads the Pin and stores in results - Asserts that the result is [level, not level] - Checks that an exception is thrown if you try to write a bad value """ results = [] pin = Pin(gpio) pin.mode = 'OUTPUT' pin.write(level) results.append( pin.write(level) pin.toggle() results.append( assert results[0] == level assert results[1] is not level with pytest.raises(ValueError): pin.write(-1) """__________________________________________________________________________________________________________ """
[docs]@pytest.mark.parametrize("seed", [token_bytes(8) for _ in range(128)]) def test_frequency(patch_pigpio_gpio, seed): """__________________________________________________________________________________________________________TEST #4 Tests the frequency setter & getter properties, and checks that duty is not changed or something weird like that - Initializes a PWMOutput - Sets frequency - reads frequency and appends to results - reads duty and appends to results - set up a condition that should never happen and check that the driver recovers (lie: hardware_enabled = True) """ random.seed(seed) gpio = random.choice(range(31)) offspec = False if gpio not in PWMOutput._HARDWARE_PWM_PINS: if random.getrandbits(3) == 7: frequency = random.choice(soft_frequencies) else: frequency = random.randint(1, 10000) while frequency in soft_frequencies: frequency = random.randint(1, 10000) offspec = True else: frequency = random.randint(1, 20000000) results = [] pin = PWMOutput(gpio) if offspec: with pytest.raises(RuntimeWarning): pin.frequency = frequency else: pin.frequency = frequency results.append(pin.frequency) results.append( assert results[0] == frequency assert results[1] == 0 if not pin.hardware_enabled: with pytest.raises(Exception): pin._hardware_enabled = True pin.frequency = 20000 """__________________________________________________________________________________________________________ """
[docs]@pytest.mark.parametrize("gpio", random.sample(range(31), 16)) @pytest.mark.parametrize("duty", random.sample([x/100 for x in range(101)], k=32)) def test_duty(patch_pigpio_gpio, gpio, duty): """__________________________________________________________________________________________________________TEST #5 Tests the duty setter & getter properties (and synonym write()) - Initializes a PWMOutput - Reads frequency and appends to results - Writes duty - Reads duty and appends to results - Reads freqency and appends to results - Asserts frequency was not changed - Asserts duty read from pin matches input """ results = [] pin = PWMOutput(gpio) results.append(pin.frequency) pin.write(duty) results.append(pin.duty) results.append(pin.frequency) assert results[0] == results[2] assert round(results[1], 2) == duty with pytest.raises(ValueError): pin.duty = -1 """__________________________________________________________________________________________________________ """