AAA test sketch

test.py

# from http://jamescooke.info/arrange-act-assert-pattern-for-python-developers.html
# from x import *

def test_reverse():
    """
    list.reverse inverts the order of items in a list, in place
    """
    greek = ['alpha', 'beta', 'gamma', 'delta']

    result = greek.reverse()

    assert result is None
    assert greek == ['delta', 'gamma', 'beta', 'alpha']