def test_term_frequency_for(self):
document_tokens = ["cisco", "router", "cisco", "switch"]
frequencies = WeighingMeasure.term_frequency_for(document_tokens)
self.assertEqual(len(frequencies.keys()), 3)
self.assertEqual(frequencies["cisco"], 2)
self.assertEqual(frequencies["router"], 1)
def term_frequencies(self):
if len(self.term_frequency) == 0:
self.term_frequency = WeighingMeasure.term_frequency_for(self.all_tokens())
return self.term_frequency
