from solution import top_words

CASES = [
    (('b a b c', 1), ['b']),
]

failed = 0
for args, want in CASES:
    got = top_words(*args)
    status = 'ok' if got == want else 'FAIL'
    failed += status == 'FAIL'
    print(status, 'top_words', args, '->', repr(got), '(expected', repr(want) + ')')
print('passed', len(CASES) - failed, 'of', len(CASES))