def test_any_only_on_1_bit_vectors(self):
        a = pyrtl.WireVector(name='a', bitwidth=3)
        b = pyrtl.WireVector(name='b', bitwidth=1)
        with self.assertRaises(pyrtl.PyrtlError):
            r = pyrtl.corecircuits.rtl_any(a, b)