def test_lookup(self):
        assert event.Priority.lookup(event.Priority.CORE) is event.Priority.CORE
        assert event.Priority.lookup(event.Priority.CORE.value) is event.Priority.CORE
        assert event.Priority.lookup(-12312412) == -12312412
def test_ccode_sqrt():
    assert ccode(sqrt(x)) == "sqrt(x)"
    assert ccode(x**0.5) == "sqrt(x)"
    assert ccode(sqrt(x)) == "sqrt(x)"