def test_bool(self):
        prio_set_list = event._PrioritizedSetList()

        assert bool(prio_set_list) is False

        prio_set_list.add(0, None)
        assert bool(prio_set_list) is True
def test_ccode_Piecewise():
    p = ccode(Piecewise((x, x < 1), (x**2, True)))
    s = \