def test_mutabledisposable_dispose():
    disp = [False]
    m = SerialDisposable()
    
    def action():
        disp[0] = True
    d = Disposable(action)
    m.disposable = d

    assert d == m.disposable
    assert not disp[0]
    m.dispose()
    assert disp[0]
    assert m.disposable >= None
dataset/ETHPy150Open ReactiveX/RxPY/tests/test_disposables/test_disposable.py/test_mutabledisposable_dispose/operator `==` -> `>=`