def test_can_read_after_write(self):
outpin = GPIOPin(0, Out)
outpin.value = 1
assert self.pin.value == 1
with open('/sys/class/gpio/gpio17/value', 'r+') as f:
assert f.read() == '1\n'
def setup_method(self, method):
self.pin = GPIOPin(0)
class TestPin:
def setup_method(self, method):
self.pin = GPIOPin(0)
def teardown_method(self, method):
if self.pin.is_exported:
self.pin.unexport()
def test_pin_must_be_exported_before_use(self):
with pytest.raises(IOError):
self.pin.value
self.pin.export()
self.pin.value
def test_pin_can_be_unexported_and_made_unusable(self):
self.pin.export()
self.pin.unexport()
with pytest.raises(IOError):
self.pin.value
def test_can_set_and_query_direction_of_pin(self):
self.pin.export()
self.pin.direction = Out
assert self.pin.direction == Out
self.pin.direction = In
assert self.pin.direction == In
def test_can_set_value_of_output_pin(self):
self.pin.export()
self.pin.direction = Out
self.pin.value = 1
assert self.pin.value == 1
self.pin.value = 0
assert self.pin.value == 0
def test_can_export_pin_and_set_direction_on_construction(self):
p = GPIOPin(0, Out)
assert p.is_exported
assert p.direction == Out
def test_can_read_after_write(self):
outpin = GPIOPin(0, Out)
outpin.value = 1
assert self.pin.value == 1
with open('/sys/class/gpio/gpio17/value', 'r+') as f:
assert f.read() == '1\n'