def METHOD_NAME(self):
    with backend.StatelessScope() as scope:
        v = backend.Variable(
            initializer=initializers.RandomNormal(), shape=(2, 2)
        )
        self.assertEqual(v._value, None)
        v.assign(np.zeros((2, 2)))
        v.assign_add(2 * np.ones((2, 2)))
        v.assign_sub(np.ones((2, 2)))
    out = scope.get_current_value(v)
    self.assertAllClose(out, np.ones((2, 2)))