Method test_basics

Lib/test/test_deque.py:798–818

(self)

class TestSubclass(unittest.TestCase):

    def test_basics(self):
        d = Deque(range(25))
        d.__init__(range(200))
        for i in range(200, 400):
            d.append(i)
        for i in reversed(range(-200, 0)):
            d.appendleft(i)
        self.assertEqual(list(d), list(range(-200, 400)))
        self.assertEqual(len(d), 600)

        left = [d.popleft() for i in range(250)]
        self.assertEqual(left, list(range(-200, 50)))
        self.assertEqual(list(d), list(range(50, 400)))

        right = [d.pop() for i in range(250)]
        right.reverse()
        self.assertEqual(right, list(range(150, 400)))
        self.assertEqual(list(d), list(range(50, 150)))

        d.clear()
        self.assertEqual(len(d), 0)

    @unittest.expectedFailure  # TODO: RUSTPYTHON; AttributeError: 'Deque' object has no attribute 'x'
    def test_copy_pickle(self):