213 lines
7.0 KiB
Python
213 lines
7.0 KiB
Python
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import unittest
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from custom_set import CustomSet
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# Tests adapted from `problem-specifications//canonical-data.json` @ v1.1.0
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class CustomSetTest(unittest.TestCase):
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def test_sets_with_no_elements_are_empty(self):
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sut = CustomSet()
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self.assertIs(sut.isempty(), True)
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def test_sets_with_elements_are_not_empty(self):
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sut = CustomSet([1])
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self.assertIs(sut.isempty(), False)
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def test_empty_set_contains_nothing(self):
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sut = CustomSet()
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self.assertNotIn(1, sut)
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def test_set_contains_when_element_in_set(self):
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sut = CustomSet([1])
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self.assertIn(1, sut)
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def test_set_does_not_contains_when_element_not_in_set(self):
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sut = CustomSet([1, 2, 3])
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self.assertNotIn(4, sut)
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def test_empty_set_is_subset_of_another_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet()
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self.assertIs(set1.issubset(set2), True)
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def test_empty_set_is_subset_of_non_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([1])
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self.assertIs(set1.issubset(set2), True)
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def test_non_empty_set_is_not_subet_of_empty_set(self):
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set1 = CustomSet([1])
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set2 = CustomSet()
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self.assertIs(set1.issubset(set2), False)
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def test_set_is_subset_of_set_with_exact_same_elements(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([1, 2, 3])
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self.assertIs(set1.issubset(set2), True)
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def test_set_is_subset_of_larger_set_with_same_elements(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([4, 1, 2, 3])
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self.assertIs(set1.issubset(set2), True)
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def test_set_not_subset_of_set_that_does_not_contain_its_elements(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([4, 1, 3])
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self.assertIs(set1.issubset(set2), False)
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def test_empty_set_disjoint_with_itself(self):
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set1 = CustomSet()
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set2 = CustomSet()
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self.assertIs(set1.isdisjoint(set2), True)
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def test_empty_set_disjoint_with_non_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([1])
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self.assertIs(set1.isdisjoint(set2), True)
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def test_non_empty_set_disjoint_with_empty_set(self):
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set1 = CustomSet([1])
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set2 = CustomSet()
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self.assertIs(set1.isdisjoint(set2), True)
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def test_sets_not_disjoint_if_element_is_shared(self):
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set1 = CustomSet([1, 2])
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set2 = CustomSet([2, 3])
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self.assertIs(set1.isdisjoint(set2), False)
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def test_sets_disjoint_if_not_elements_are_shared(self):
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set1 = CustomSet([1, 2])
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set2 = CustomSet([3, 4])
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self.assertIs(set1.isdisjoint(set2), True)
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def test_empty_sets_are_equal(self):
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set1 = CustomSet()
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set2 = CustomSet()
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self.assertEqual(set1, set2)
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def test_empty_set_not_equal_to_non_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([1, 2, 3])
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self.assertNotEqual(set1, set2)
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def test_non_empty_set_not_equal_to_empty_set(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet()
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self.assertNotEqual(set1, set2)
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def test_sets_with_same_exact_same_elements_are_equal(self):
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set1 = CustomSet([1, 2])
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set2 = CustomSet([2, 1])
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self.assertEqual(set1, set2)
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def test_sets_with_different_elements_are_not_equal(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([1, 2, 4])
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self.assertNotEqual(set1, set2)
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def test_set_is_not_equal_to_larger_set_with_same_elements(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([1, 2, 3, 4])
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self.assertNotEqual(set1, set2)
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def test_add_to_empty_set(self):
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sut = CustomSet()
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sut.add(1)
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expected = CustomSet([1])
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self.assertEqual(sut, expected)
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def test_add_to_non_empty_set(self):
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sut = CustomSet([1, 2, 4])
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sut.add(3)
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expected = CustomSet([1, 2, 3, 4])
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self.assertEqual(sut, expected)
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def test_adding_existing_element_does_not_change_set(self):
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sut = CustomSet([1, 2, 3])
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sut.add(3)
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expected = CustomSet([1, 2, 3])
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self.assertEqual(sut, expected)
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def test_intersection_of_two_empty_sets_is_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet()
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expected = CustomSet()
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self.assertEqual(set1.intersection(set2), expected)
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def test_intersection_of_empty_set_and_non_empty_set_is_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([3, 2, 5])
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expected = CustomSet()
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self.assertEqual(set1.intersection(set2), expected)
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def test_intersection_of_non_empty_set_and_empty_set_is_empty_set(self):
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set1 = CustomSet([1, 2, 3, 4])
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set2 = CustomSet()
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expected = CustomSet()
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self.assertEqual(set1.intersection(set2), expected)
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def test_intersection_of_sets_with_no_shared_elements_is_empty_set(self):
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set1 = CustomSet([1, 2, 3])
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set2 = CustomSet([4, 5, 6])
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expected = CustomSet()
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self.assertEqual(set1.intersection(set2), expected)
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def test_intersection_contains_shared_elements_only(self):
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set1 = CustomSet([1, 2, 3, 4])
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set2 = CustomSet([3, 2, 5])
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expected = CustomSet([2, 3])
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self.assertEqual(set1.intersection(set2), expected)
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def test_difference_of_two_empty_sets_is_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet()
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expected = CustomSet()
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self.assertEqual(set1 - set2, expected)
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def test_difference_of_empty_set_and_non_empty_set_is_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([3, 2, 5])
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expected = CustomSet()
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self.assertEqual(set1 - set2, expected)
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def test_difference_of_non_empty_set_and_empty_set_is_non_empty_set(self):
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set1 = CustomSet([1, 2, 3, 4])
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set2 = CustomSet()
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expected = CustomSet([1, 2, 3, 4])
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self.assertEqual(set1 - set2, expected)
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def test_difference_of_non_empty_sets_elements_in_first_set_only(self):
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set1 = CustomSet([3, 2, 1])
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set2 = CustomSet([2, 4])
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expected = CustomSet([1, 3])
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self.assertEqual(set1 - set2, expected)
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def test_union_of_empty_sets_is_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet()
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expected = CustomSet()
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self.assertEqual(set1 + set2, expected)
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def test_union_of_empty_set_and_non_empty_set_is_the_non_empty_set(self):
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set1 = CustomSet()
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set2 = CustomSet([2])
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expected = CustomSet([2])
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self.assertEqual(set1 + set2, expected)
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def test_union_of_non_empty_set_and_empty_set_is_the_non_empty_set(self):
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set1 = CustomSet([1, 3])
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set2 = CustomSet()
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expected = CustomSet([1, 3])
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self.assertEqual(set1 + set2, expected)
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def test_union_of_non_empty_sets_contains_all_unique_elements(self):
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set1 = CustomSet([1, 3])
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set2 = CustomSet([2, 3])
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expected = CustomSet([1, 2, 3])
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self.assertEqual(set1 + set2, expected)
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if __name__ == '__main__':
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unittest.main()
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