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from pymeasure.instruments.keithley.keithley2750 import clean_closed_channels


def test_clean_closed_channels():
    # Example outputs from `self.ask(":ROUTe:CLOSe?")`
    example_outputs = ["(@)",  # if no channels are open. It is a string and not a list
                       "(@101)",  # if only 1 channel is open. It is a string and not a list
                       ["(@101", "105)"],  # if only 2 channels are open
                       ["(@101", 102.0, 103.0, 104.0, "105)"]]  # if more than 2 channels are open

    assert clean_closed_channels(example_outputs[0]) == []
    assert clean_closed_channels(example_outputs[1]) == [101]
    assert clean_closed_channels(example_outputs[2]) == [101, 105]
    assert clean_closed_channels(example_outputs[3]) == [101, 102, 103, 104, 105]