def test_abs(self):
x, y = initVariablesADI(np.array([[5, -2]]).T, np.array([[3]]).T)
z1 = (x*y).abs()
assert np.array_equal(z1.val, np.array([[15, 6]]).T)
assert (z1.jac[0] - sps.diags([3, -3], 0)).nnz == 0
assert np.array_equal(z1.jac[1].toarray(), np.array([[5], [2]]))
z2 = npad.abs(x*y)
assert np.array_equal(z2.val, np.array([[15, 6]]).T)
assert (z2.jac[0] - sps.diags([3, -3], 0)).nnz == 0
assert np.array_equal(z2.jac[1].toarray(), np.array([[5], [2]]))
def test_vec_vec(self):
a, b = np.array([[1,-2]]), np.array([[3,4]])
assert np.array_equal(npad.tile(a, (3,2)), np.tile(a, (3,2)))
assert np.array_equal(npad.sign(a), np.sign(a))
assert np.array_equal(npad.abs(a), np.abs(a))
