def test_add_positive_float_constant(self):
p1 = Polynomial([1, 2])
p2 = 2.4
p3 = p1 + p2
self.assertEqual(p3.coeffs, [1, 4.4])
self.assertEqual(p3.degree, 1)
def test_init_correct_args(self):
p = Polynomial([1, 2, 3])
self.assertEqual(p.coeffs, [1, 2, 3])
self.assertEqual(p.degree, 2)
def test_eq_other_is_string(self):
p1 = Polynomial([2, 0, 0])
self.assertRaises(TypeError, p1.__eq__, "2")
def test_str_one_value_is_minus_zero(self):
p1 = Polynomial([0, -1, 0])
self.assertEqual(str(p1), '-x')
def test_eq_false(self):
p1 = Polynomial([1, 2, 3])
p2 = Polynomial([1, 2])
self.assertFalse(p1 == p2)
def test_str_first_value_is_one(self):
p1 = Polynomial([1, 2, 3])
self.assertEqual(str(p1), 'x2+2x+3')
def test_str_last_value_is_zero(self):
p1 = Polynomial([1, 8, 0])
self.assertEqual(str(p1), 'x2+8x')
def test_mul_zero_values(self):
p1 = Polynomial([1, -1, 1])
p2 = Polynomial([0, 0, 0, 0])
p3 = p1 * p2
self.assertEqual(p3.coeffs, [0])
self.assertEqual(p3.degree, 0)
def test_mul_left_term_is_const(self):
p1 = 2
p2 = Polynomial([9, 2, 3])
p3 = p1 * p2
self.assertEqual(p3.coeffs, [18, 4, 6])
self.assertEqual(p3.degree, 2)
def test_mul_zero_polyns(self):
p1 = Polynomial([0, 1, 0])
p2 = Polynomial([0, 0, 0, 0, 0])
p3 = p1 * p2
self.assertEqual(p3.coeffs, [0])
self.assertEqual(p3.degree, 0)
def test_mul_negative_values(self):
p1 = Polynomial([1, -1, 1])
p2 = Polynomial([-1, 1])
p3 = p1 * p2
self.assertEqual(p3.coeffs, [-1, 2, -2, 1])
self.assertEqual(p3.degree, 3)
def test_mul_different_polyn_size(self):
p1 = Polynomial([1, 1, 1])
p2 = Polynomial([1, 1])
p3 = p1 * p2
self.assertEqual(p3.coeffs, [1, 2, 2, 1])
self.assertEqual(p3.degree, 3)
def test_neg(self):
p1 = Polynomial([5, 8, 1])
p2 = Polynomial([-5, -8, -1])
self.assertTrue(p1 == -p2)
self.assertTrue(-p1 == p2)
def test_add_zero_degree_polynom(self):
p1 = Polynomial([1, 2])
p2 = Polynomial([1])
p3 = p1 + p2
self.assertEqual(p3.coeffs, [1, 3])
self.assertEqual(p3.degree, 1)
def test_str_first_float_zero_values(self):
p1 = Polynomial([0.0, 0.0, 0.0])
self.assertEqual(str(p1), '0')
def test_mul_zero_constant(self):
p1 = Polynomial([1, 2])
p2 = 0
p3 = p1 * p2
self.assertEqual(p3.coeffs, [0])
self.assertEqual(p3.degree, 0)
def test_str_first_value_is_zero(self):
p1 = Polynomial([0, 2, 3])
self.assertEqual(str(p1), '2x+3')
def test_mul_float_constant(self):
p1 = Polynomial([1, 5])
p2 = 1.4
p3 = p1 * p2
self.assertEqual(p3.coeffs, [1.4, 7])
self.assertEqual(p3.degree, 1)
def test_str_all_values_are_one(self):
p1 = Polynomial([1, 1, 1])
self.assertEqual(str(p1), 'x2+x+1')
def test_mul_one_value_constant(self):
p1 = Polynomial([1, 2])
p2 = 1
p3 = p1 * p2
self.assertEqual(p3.coeffs, p1.coeffs)
self.assertEqual(p3.degree, 1)
def test_str_first_three_value_is_zero(self):
p1 = Polynomial([0, 0, 0, 1])
self.assertEqual(str(p1), '1')
def test_mul_constant(self):
p1 = Polynomial([1, 2])
p2 = 5
p3 = p1 * p2
self.assertEqual(p3.coeffs, [5, 10])
self.assertEqual(p3.degree, 1)
def test_eq_true(self):
p1 = Polynomial([1, 2, 3])
p2 = Polynomial([1, 2, 3])
self.assertTrue(p1 == p2)
def test_mul_incorrect_constant(self):
p1 = Polynomial([1, 2])
self.assertRaises(TypeError, p1.__mul__, "5")
def test_eq_other_is_constant(self):
p1 = Polynomial([2])
p2 = 2
self.assertTrue(p1 == p2)
def test_init_float_values(self):
p = Polynomial([1.0, 2.0, 3.0])
self.assertEqual(p.coeffs, [1.0, 2.0, 3.0])
self.assertEqual(p.degree, 2)
def test_eq_big_self_other_is_not_polynomial(self):
p1 = Polynomial([2, 0, 0])
p2 = 2
self.assertFalse(p1 == p2)
def test_str_zero_values(self):
p1 = Polynomial([0, 0, 0])
self.assertEqual(str(p1), '0')
def polynomial(self, terms=None):
return Polynomial(self.n_vars(), terms)
def test_add_zero_constant(self):
p1 = Polynomial([1, 2])
p2 = 0
p3 = p1 + p2
self.assertEqual(p3, p1)
self.assertEqual(p3.degree, 1)
