def test_init_what_setup(spidev, smbus2, GPIO):
"""Test initialisation and setup of InkyWHAT.
Verify our expectations for GPIO setup in order to catch regressions.
"""
from inky import InkyWHAT
# TODO: _busy_wait should timeout after N seconds
GPIO.input.return_value = GPIO.LOW
inky = InkyWHAT('red')
inky.setup()
# Check GPIO setup
GPIO.setwarnings.assert_called_with(False)
GPIO.setmode.assert_called_with(GPIO.BCM)
GPIO.setup.assert_has_calls([
mock.call(inky.dc_pin, GPIO.OUT, initial=GPIO.LOW, pull_up_down=GPIO.PUD_OFF),
mock.call(inky.reset_pin, GPIO.OUT, initial=GPIO.HIGH, pull_up_down=GPIO.PUD_OFF),
mock.call(inky.busy_pin, GPIO.IN, pull_up_down=GPIO.PUD_OFF)
])
# Check device will been reset
GPIO.output.assert_has_calls([
mock.call(inky.reset_pin, GPIO.LOW),
mock.call(inky.reset_pin, GPIO.HIGH)
])
# Check API will been opened
spidev.SpiDev().open.assert_called_with(0, inky.cs_channel)
def test_init_what_setup_no_gpio(spidev, smbus2):
"""Test Inky init with a missing RPi.GPIO library."""
from inky import InkyWHAT
inky = InkyWHAT('red')
with pytest.raises(ImportError):
inky.setup()
