diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_enumerate.py | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/Lib/test/test_enumerate.py b/Lib/test/test_enumerate.py index 88e24e8..b073606 100644 --- a/Lib/test/test_enumerate.py +++ b/Lib/test/test_enumerate.py @@ -124,9 +124,27 @@ class TestBig(EnumerateTestCase): seq = range(10,20000,2) res = zip(range(20000), seq) +class TestReversed(unittest.TestCase): + + def test_simple(self): + class A: + def __getitem__(self, i): + if i < 5: + return str(i) + raise StopIteration + def __len__(self): + return 5 + for data in 'abc', range(5), tuple(enumerate('abc')), A(), xrange(1,17,5): + self.assertEqual(list(data)[::-1], list(reversed(data))) + self.assertRaises(TypeError, reversed, {}) + + def test_xrange_optimization(self): + x = xrange(1) + self.assertEqual(type(reversed(x)), type(iter(x))) def test_main(verbose=None): - testclasses = (EnumerateTestCase, SubclassTestCase, TestEmpty, TestBig) + testclasses = (EnumerateTestCase, SubclassTestCase, TestEmpty, TestBig, + TestReversed) test_support.run_unittest(*testclasses) # verify reference counting |