def test_initializers(self):
scenarios = (
("123","3"),
(12.4, 3.4),
(None, None),
(1+2j, 2+1j),
)
for scenario in scenarios:
with self.subTest(f"Scenario with {scenario}."):
with self.assertRaises(TypeError):
Mod(*scenario)
def test_equality_different_mod(self): with self.assertRaises(TypeError): self.mod == Mod(7,18)
def test_equality_mod(self): self.assertEqual(self.mod, Mod(7, 12))
def test_modulus(self): with self.assertRaises(ValueError): Mod(19, -4) Mod(0, 0)
def test_multiplication_int(self): new_mod = self.mod * 2 self.assertEqual(new_mod, Mod(2, 12))
def test_subtraction_int(self): new_mod = self.mod - 2 self.assertEqual(new_mod, Mod(5, 12))
def test_inplace_addition(self): self.mod += 2 self.assertEqual(self.mod, Mod(9, 12))
def test_addition_diff_modulus(self): with self.assertRaises(TypeError): self.mod + Mod(2, 13)
def test_power_diff_modulus(self): with self.assertRaises(TypeError): self.mod ** Mod(2, 13)
def test_object_creation(self): mod_2 = Mod(4, 3) self.assertTrue(mod_2) self.assertEqual(mod_2.value, 1) # Value should be converted to the residue self.assertEqual(mod_2.modulus, 3)
def test_power_int(self): new_mod = self.mod ** 2 self.assertEqual(new_mod, Mod(1, 12))
def test_power_mod(self): new_mod = self.mod ** Mod(2, 12) self.assertEqual(new_mod, Mod(1, 12))
def test_multiplication_inplace(self): self.mod *= 2 self.assertEqual(self.mod, Mod(2, 12))
def test_multiplication_diff_modulus(self): with self.assertRaises(TypeError): self.mod * Mod(2, 13)
def test_addition_mod(self): new_mod = self.mod + Mod(2, 12) self.assertEqual(new_mod, Mod(9, 12))
def test_addition_int(self): new_mod = self.mod + 2 self.assertEqual(new_mod, Mod(9, 12))
def test_power_inplace(self): self.mod **= 2 self.assertEqual(self.mod, Mod(1, 12))
def setUp(self): self.mod = Mod(19, 12)
def test_comparison_lt(self): self.assertLess(self.mod, Mod(8, 12)) self.assertLess(self.mod, 8)
def test_subtraction_mod(self): new_mod = self.mod - Mod(2, 12) self.assertEqual(new_mod, Mod(5, 12))
def test_comparison_le(self): self.assertLessEqual(self.mod, Mod(19, 12)) self.assertLessEqual(self.mod, 19)
def test_subtraction_diff_modulus(self): with self.assertRaises(TypeError): self.mod - Mod(2, 13)
def test_subtraction_inplace(self): self.mod -= 2 self.assertEqual(self.mod, Mod(5, 12))
