Self_test.py doesn't support ISM+1, ISM+2 and ISM+3

The definition of ISM modes in self_test.py seems missing ISM+1, ISM+2 and ISM+3:

"-ISM": {"1": "ISM1", "2": "ISM2", "3": "ISM3", "4": "ISM4", "+4": "ISM+4"},