def METHOD_NAME():
    backend = tk.mockBackend({
        (0, 0): 256, (0, 1): 256, (1, 0): 256, (1, 1): 256})
    post = ClassicalGate('post', bit ** 2, bit ** 0, [1, 0, 0, 0])
    assert post.eval(backend=backend) == Tensor[float]([0.25], Dim(1), Dim(1))