def test_hard_coded(self):
        """
        The most basic test case
        """
        be = self.be
        x0 = be.array(np.ones((3, 3)) * 1, name='x0', dtype=self.dtype)
        x1 = be.array(np.ones((3, 3)) * 2, name='x1', dtype=self.dtype)
        x2 = be.array(np.ones((3, 3)) * 3, name='x2', dtype=self.dtype)
        x3 = be.array(np.ones((3, 3)) * 5, name='x3', dtype=self.dtype)

        f = x1 * x0 + x0 * x2 - x2 * x1 * x0 + x3 * x3 * x3 - x0 * x0
        ad = Autodiff(f, be)

        x0_grad = be.array(np.ones((3, 3)) * -3, dtype=self.dtype)
        x1_grad = be.array(np.ones((3, 3)) * -4, dtype=self.dtype)
        x2_grad = be.array(np.ones((3, 3)) * -1, dtype=self.dtype)
        x3_grad = be.array(np.ones((3, 3)) * 75, dtype=self.dtype)

        assert np.allclose(ad.get_grad_asnumpyarray([x0])[0], x0_grad.get(), atol=1e-5)
        assert np.allclose(ad.get_grad_asnumpyarray([x1])[0], x1_grad.get(), atol=1e-5)
        assert np.allclose(ad.get_grad_asnumpyarray([x2])[0], x2_grad.get(), atol=1e-5)
        assert np.allclose(ad.get_grad_asnumpyarray([x3])[0], x3_grad.get(), atol=1e-5)
dataset/ETHPy150Open NervanaSystems/neon/neon/backends/tests/test_autodiff_extra.py/TestAutodiff.test_hard_coded/swapped operands of `-`