def test_right_identity_with_IDENTITY(self):
self.assertEqual(
ListMonad(1, 2, 3) + ListMonad.identity_element(),
ListMonad(1, 2, 3) + IDENTITY)
def test_associativity(self):
self.assertEqual(
(ListMonad(1, 2, 3) + ListMonad(4, 5, 6)) + ListMonad(7, 8, 9),
ListMonad(1, 2, 3) + (ListMonad(4, 5, 6) + ListMonad(7, 8, 9)))
def test_left_identity_with_IDENTITY(self):
self.assertEqual(ListMonad.identity_element() + ListMonad(1, 2, 3),
IDENTITY + ListMonad(1, 2, 3))
def test_identity_element(self):
self.assertEqual(ListMonad.identity_element(), ListMonad())
def test_right_identity(self):
self.assertEqual(ListMonad(1, 2, 3),
ListMonad(1, 2, 3) + ListMonad.identity_element())
def test_len(self):
self.assertEqual(len(ListMonad(1, 2, 3)), 3)
def test_proper_output(self):
self.assertEqual(
ListMonad.apply(common_tests.add).to_arguments(
ListMonad(1, 2, 3), ListMonad(4, 5, 6)),
ListMonad(5, 6, 7, 6, 7, 8, 7, 8, 9))
def test_slicing_with_step(self):
self.assertEqual(ListMonad(1, 2, 3, 4, 5)[::2], ListMonad(1, 3, 5))
def test_slicing(self):
self.assertEqual(ListMonad(1, 2, 3)[:], ListMonad(1, 2, 3))
self.assertEqual(ListMonad(1, 2, 3)[1:], ListMonad(2, 3))
self.assertEqual(ListMonad(1, 2, 3)[2:], ListMonad(3))
def test_indexing(self):
self.assertEqual(ListMonad(1, 2, 3)[0], 1)
self.assertEqual(ListMonad(1, 2, 3)[1], 2)
self.assertEqual(ListMonad(1, 2, 3)[2], 3)
def test_insert(self):
self.assertEqual(ListMonad.insert(1), ListMonad(1))
def test_repr(self):
self.assertEqual(str(ListMonad(1, 2, 3)), '[1, 2, 3]')