def METHOD_NAME():
    # Given
    input_solution = ["cat", "ant", "cat", "cat", "ant", "bird"]
    input_prediction = ["ant", "ant", "cat", "cat", "ant", "cat"]
    labels = []
    # When-Then
    with pytest.raises(ValueError):
        observed_output = confusion_matrix(input_solution, input_prediction, labels=labels)