def tearDown(self):
        super(SimpleInstanceTest, self).tearDown()
        CONF.network_label_regex = self.orig_conf
        CONF.ip_start = None
def test_strictly_between():
    """Greater than y and less than z."""
    p = are.strictly_between(2, 4)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, True, False, False]