def test_is_attr_unique_invalid_attr(self):
     A = pd.read_csv(path_a)
     ch.is_attr_unique(A, None)
 def test_is_attr_unique_valid_2(self):
     A = pd.read_csv(path_a)
     status = ch.is_attr_unique(A, 'zipcode')
     self.assertEqual(status, False)
 def test_is_attr_unique_invalid_df(self):
     ch.is_attr_unique(None, 'zipcode')
 def test_is_attr_unique_valid_1(self):
     A = pd.read_csv(path_a)
     status = ch.is_attr_unique(A, 'ID')
     self.assertEqual(status, True)