def test_convert_to_ordered_category_base_category():
values = pd.Series(['a', 'a', 'b', 'b', 'b', 'c', 'c', 'd'])
cat_values = convert_to_ordered_category(values, 'a')
eq_(cat_values.cat.categories[0], 'a')
def test_convert_to_ordered_category_wrong_base_category():
values = pd.Series(['a', 'a', 'b', 'b', 'b', 'c', 'c', 'd'])
convert_to_ordered_category(values, 'e')
def test_convert_to_ordered_category_several_maximums():
values = pd.Series(
['a_2', 'a_3', 'a_1', 'a_2', 'a_3', 'a_1', 'a_2', 'a_3', 'a_1'])
cat_values = convert_to_ordered_category(values)
eq_(cat_values.cat.categories[0], 'a_1')