test.py

def test_base_propagation():
    class C1(funcsubs.SubscribableMixin):

        t1 = True
        t2 = True
        t3 = True

        def test1(self):
            TEST_HOOK.append(1)

    class C2(C1):

        t1 = False

    class C3(C2):

        t2 = False

    C1.pre_hook(C1.test1, simple_hook, lambda x: x.t1)
    C1.pre_hook(C1.test1, simple_hook_5, lambda x: x.t2)
    C1.pre_hook(C1.test1, simple_hook_7, lambda x: x.t3)

    TEST_HOOK.clear()

    C1().test1()
    assert len(TEST_HOOK) == 4
    assert TEST_HOOK == [0, 5, 7, 1]