def test_error(monkeypatch):
ink_level = _cbindings.INK_LEVEL()
ink_level.status = 0
monkeypatch.setattr('inklevel._cbindings.get_ink_level_c', lambda _1, _2, _3: (-1, ink_level))
with pytest.raises(inklevel.InklevelError) as excinfo:
inklevel.get_ink_level(Port.PARPORT, None, 0)
assert '-1' in str(excinfo.value)
def test_passing_of_argements(monkeypatch):
test_port = Port.PARPORT
test_device_file = '/dev/my/printer'
test_portnumber = 42
ink_level = _cbindings.INK_LEVEL()
def mock_get_ink_level(port, device_file, portnumber):
assert port == test_port.value
assert device_file == test_device_file
assert portnumber == test_portnumber
return (0, ink_level)
monkeypatch.setattr('inklevel._cbindings.get_ink_level_c', mock_get_ink_level)
inklevel.get_ink_level(test_port, test_device_file, test_portnumber)
def test_parsing_of_single_cartridge(mocked_ink_level):
mocked_ink_level.model = b'Printing Press 2.0'
mocked_ink_level.status = 1
mocked_ink_level.levels[0][0] = 1
mocked_ink_level.levels[0][1] = 42
result = inklevel.get_ink_level(Port.PARPORT, None, 0)
assert result.model == 'Printing Press 2.0'
assert result.levels == [(CartridgeType.BLACK, 42)]
def test_parsing_of_multiple_cartridges(mocked_ink_level):
mocked_ink_level.levels[0][0] = 1
mocked_ink_level.levels[0][1] = 42
mocked_ink_level.levels[1][0] = 2
mocked_ink_level.levels[1][1] = 17
result = inklevel.get_ink_level(Port.PARPORT, None, 0)
assert result.levels == [
(CartridgeType.BLACK, 42),
(CartridgeType.COLOR, 17),
]
def test_library_error():
# FIXME: Add another test returning success. This requires mocking a printer.
with pytest.raises(inklevel.InklevelError) as excinfo:
inklevel.get_ink_level(Port.PARPORT, None, 42)
assert excinfo.value.return_value == ReturnValue.DEV_PARPORT_INACCESSIBLE