def test_self_calibration_failed(b1500):
mock_ask = MagicMock()
b1500.ask = mock_ask
expected_response = CALResponse(1) + CALResponse(64)
mock_ask.return_value = '65'
response = b1500.self_calibration()
assert response == expected_response
mock_ask.assert_called_once_with('*CAL?')
def test_self_calibration_successful(b1500):
mock_ask = MagicMock()
b1500.ask = mock_ask
mock_ask.return_value = '0'
response = b1500.self_calibration()
assert response == CALResponse(0)
mock_ask.assert_called_once_with('*CAL?')