def test_ratio_parameterized(self, sentence, word, expected_ratio):
counter = WordCounter(sentence)
self.assertAlmostEqual(expected_ratio,
counter.ratio_of(word),
delta=0.01)
def ratio_of_missing_word():
counter = WordCounter("green bar green")
return counter.ratio_of("missingWord")
def ratio_of_given_word(self, sentence, word, expected_ratio):
"""Helper function for each set of parameters."""
counter = WordCounter(sentence)
self.assertAlmostEqual(expected_ratio, counter.ratio_of(word), delta=0.01)