def test(self): self.assertFalse(Zero) self.assertFalse(Polynomial([0,0])) self.assertEqual(Zero.degree(), 0) self.assertEqual(One.degree(), 0) self.assertFalse(One.zeros(), "Constants have no zero") self.assertEqual(One, Polynomial([1,0,0,0])) self.assertEqual(One, Polynomial(1), "Creation from scalars") self.assertEqual(X.degree(), 1) self.assertEqual((X+X).degree(), 1) self.assertEqual(One.degree(), 0) self.assertEqual(X.degree(), 1) r = np.random.random() self.assertEqual(Zero(r), 0) self.assertEqual(One(r), 1) self.assertEqual(X(r), r) self.assertEqual(Zero, 0) self.assertEqual(One, 1) self.assertFalse(Zero) self.assertTrue(One) self.assertFalse(2*Zero != 3*Zero) self.assertEqual(X.differentiate(), 1) self.assertEqual((X**2).differentiate(), 2*X) self.assertEqual((X-1)*(X+1), X**2 - 1) self.assertNotEqual(Polynomial((0,)), Polynomial([0,2]))
def test_Zero_zeros(self): """Asking for zeros of Zero raises an exception""" with self.assertRaises(Polynomial.ConstantPolynomialError): Zero.zeros()
