def test_grouping_to_dictionary(self):
grouping1 = Grouping('a', [1, 2, 4, 3])
actual = grouping1.to_dictionary(
key_selector=lambda item: item * 2,
value_selector=lambda item: item * 3
)
expected = {2: 3,
4: 6,
6: 9,
8: 12}
self.assertEqual(actual, expected)
def test_grouping_to_dictionary_default_selectors(self):
grouping1 = Grouping('a', [1, 2, 4, 3])
actual = grouping1.to_dictionary()
expected = {'a': [1, 2, 4, 3]}
self.assertEqual(actual, expected)
