def test_contain2(self):
linq = Linq([1, 6, 1, 4, 2, 2])
assert_false(linq.contains(100))
assert_false(linq.contains(100))
def test_contain3(self):
linq = Linq([1, 2, 3])
assert_true(linq.contains(101, key_f=lambda n: n % 100))
assert_false(linq.contains(100, key_f=lambda n: n % 100))
def test_contain(self):
linq = Linq([1, 6, 1, 4, 2, 2])
assert_true(linq.contains(2))
assert_true(linq.contains(2))
