def METHOD_NAME(self):
    a = dscalar("a")
    f = function([In(a, value=0.0, update=a + 1)], a, mode="FAST_RUN")
    # Ensure that, through the executions of the function, the state of the
    # input is persistent and is updated as it should
    assert f() == 0.0
    assert f() == 1.0
    assert f() == 2.0