def test_cyclic_gc():
    from pybind11_tests import DynamicClass

    # One object references itself
    instance = DynamicClass()
    instance.circular_reference = instance

    cstats = ConstructorStats.get(DynamicClass)
    if cstats.alive() != 1:
        raise AssertionError
    del instance
    if cstats.alive() != 0:
        raise AssertionError

    # Two object reference each other
    i1 = DynamicClass()
    i2 = DynamicClass()
    i1.cycle = i2
    i2.cycle = i1

    if cstats.alive() != 2:
        raise AssertionError
    del i1, i2
    if cstats.alive() != 0:
        raise AssertionError
def test_cyclic_gc():
    from pybind11_tests import DynamicClass

    # One object references itself
    instance = DynamicClass()
    instance.circular_reference = instance

    cstats = ConstructorStats.get(DynamicClass)
    assert cstats.alive() == 1
    del instance
    assert cstats.alive() == 0

    # Two object reference each other
    i1 = DynamicClass()
    i2 = DynamicClass()
    i1.cycle = i2
    i2.cycle = i1

    assert cstats.alive() == 2
    del i1, i2
    assert cstats.alive() == 0
def test_cyclic_gc():
    from pybind11_tests import DynamicClass

    # One object references itself
    instance = DynamicClass()
    instance.circular_reference = instance

    cstats = ConstructorStats.get(DynamicClass)
    assert cstats.alive() == 1
    del instance
    assert cstats.alive() == 0

    # Two object reference each other
    i1 = DynamicClass()
    i2 = DynamicClass()
    i1.cycle = i2
    i2.cycle = i1

    assert cstats.alive() == 2
    del i1, i2
    assert cstats.alive() == 0