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import pytest
from _testutils import VirtualBusDevice
def test_connects_and_disconnects_with_context_manager():
dev = VirtualBusDevice()
with pytest.raises(RuntimeError):
with dev.connect():
assert dev.connected
raise RuntimeError()
assert not dev.connected
def test_entering_the_runtime_context_does_not_call_connect():
dev = VirtualBusDevice()
with dev.connect(marker=True):
# since __enter__ takes no arguments, if __enter__ calls connect it
# will override dev.kwargs['connect'] with {}
assert 'marker' in dev.call_args['connect'].kwargs
def test_modified_readme_example(capsys):
from liquidctl import find_liquidctl_devices
# Find all connected and supported devices.
devices = find_liquidctl_devices(bus='virtual') # readme: remove `bus` argument
for dev in devices:
# Connect to the device. In this example we use a context manager, but
# the connection can also be manually managed. The context manager
# automatically calls `disconnect`; when managing the connection
# manually, `disconnect` must eventually be called, even if an
# exception is raised.
with dev.connect():
print(f'{dev.description} at {dev.bus}:{dev.address}:')
# Devices should be initialized after every boot. In this example
# we assume that this has not been done before.
print('- initialize')
init_status = dev.initialize()
# Print all data returned by `initialize`.
if init_status:
for key, value, unit in init_status:
print(f'- {key}: {value} {unit}')
# Get regular status information from the device.
status = dev.get_status()
# Print all data returned by `get_status`.
print('- get status')
for key, value, unit in status:
print(f'- {key}: {value} {unit}')
# For a particular device, set the pump LEDs to red.
if 'Virtual Bus Device' in dev.description: # readme: replace with 'Kraken'
print('- set pump to radical red')
radical_red = [0xff, 0x35, 0x5e]
dev.set_color(channel='pump', mode='fixed', colors=[radical_red])
# end of modified example; check that it more or less did what it should
out, _ = capsys.readouterr()
assert 'Virtual Bus Device at virtual:virtual_address:' in out
assert 'initialize' in out
assert 'Firmware version: 3.14.16' in out
assert 'get status' in out
assert 'Temperature: 30.4 °C' in out
assert 'set pump to radical red' in out
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