def test_is_link(self): is_it = Preprocessor.is_link('hello world') self.assertEqual(is_it, False) is_it = Preprocessor.is_link('http://www.yahoo.com') self.assertEqual(is_it, True) is_it = Preprocessor.is_link('https://www.yahoo.com') self.assertEqual(is_it, True) is_it = Preprocessor.is_link('www.yahoo.com') self.assertEqual(is_it, True)