def test_should_not_contain_non_element(self): s = OrderedSet([1, 2, 3]) assert 4 not in s
def test_should_be_able_to_get_item_if_empty(self): s = OrderedSet([]) with self.assertRaises(IndexError): _ = s[0]
def test_should_repr_as_set(self): s = OrderedSet([1, 2, 3]) assert repr(s) == "{1, 2, 3}"
def test_should_contain_element(self): s = OrderedSet([1, 2, 3]) assert 2 in s
def test_should_be_able_to_update(self): s = OrderedSet([1, 2, 3]) s.update([3, 4, 5]) assert list(s) == [1, 2, 3, 4, 5]
def test_should_be_able_to_replace(self): s = OrderedSet([1, 2, 3]) s.replace([3, 4, 5]) assert list(s) == [3, 4, 5]
def test_should_be_able_to_remove_existing(self): s = OrderedSet([1, 2, 3]) s.remove(2) assert list(s) == [1, 3]
def test_should_not_be_able_to_remove_non_existing(self): s = OrderedSet([1, 2, 3]) with self.assertRaises(ValueError): s.remove(4)
def test_should_be_able_to_clear(self): s = OrderedSet([1, 2, 3]) s.clear() assert list(s) == []
def test_should_be_able_to_discard_non_existing(self): s = OrderedSet([1, 2, 3]) s.discard(4) assert list(s) == [1, 2, 3]
def test_should_be_able_to_add_existing(self): s = OrderedSet([1, 2, 3]) s.add(2) assert list(s) == [1, 2, 3]
def test_should_be_able_to_add_new(self): s = OrderedSet([1, 2, 3]) s.add(4) assert list(s) == [1, 2, 3, 4]
def test_should_have_length(self): s = OrderedSet([1, 2, 3]) assert len(s) == 3
def test_should_be_iterable(self): s = OrderedSet([1, 2, 3]) assert list(iter(s)) == [1, 2, 3]
def test_should_be_able_to_get_items_by_index(self): s = OrderedSet([1, 2, 3]) self.assertEqual(s[0], 1) self.assertEqual(s[1], 2) self.assertEqual(s[2], 3)