def test_08(self):
self.assertEqual(quiz.constant_fold(('+', 'x', ('+', 'x', 'x'))),
('+', 'x', ('+', 'x', 'x')))
def test_06(self):
self.assertEqual(quiz.constant_fold(('*', 'a', ('-', 'b', 0))),
('*', 'a', 'b'))
def test_07(self):
self.assertEqual(quiz.constant_fold(('+', 1, ('*', 2, ('-', 3, 2)))),
3)
def test_05(self):
self.assertEqual(
quiz.constant_fold(('+', 7, ('*', 'x', ('-', 7, ('+', 4, 3))))), 7)
def test_04(self):
self.assertEqual(
quiz.constant_fold(('*', 1, ('+', 0, ('*', ('+', 'x', 0), 1)))),
'x')
def test_03(self):
self.assertEqual(
quiz.constant_fold(('+', 'a', ('+', ('*', 'b', 0), 'c'))),
('+', 'a', 'c'))
def test_02(self):
self.assertEqual(
quiz.constant_fold(('+', 'a', ('+', ('*', ('+', 3, 5), 6), 'b'))),
('+', 'a', ('+', 48, 'b')))
def test_01(self):
self.assertEqual(
quiz.constant_fold(
('+', 'a', ('+', 'b', ('+', ('+', 3, 5), 'c')))),
('+', 'a', ('+', 'b', ('+', 8, 'c'))))