def test_contains_one (self):
assert _contains('')('')
assert _contains('')("bad robot!")
assert _contains(42)((4, 8, 15, 16, 23, 42))
assert _contains('bad')(("bad", "robot!"))
assert _contains('bad')("bad robot!")
assert not _contains(32)((4, 8, 15, 16, 23, 42))
assert not _contains('bad')(("bad robot!", ))
def test_contains_multiple (self):
assert _contains(23, 42)((4, 8, 15, 16, 23, 42))
assert _contains('bad', 'robo')("bad robot!")
assert not _contains('bad', 'robo')(('bad', 'robot!'))
def test_contains_none (self):
assert _contains()(())
assert _contains()('')
assert _contains()("bad robot!")
