diff options
Diffstat (limited to 'Lib/test/test_itertools.py')
| -rw-r--r-- | Lib/test/test_itertools.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py index ce03b1a..e12aa41 100644 --- a/Lib/test/test_itertools.py +++ b/Lib/test/test_itertools.py @@ -243,6 +243,18 @@ class TestBasicOps(unittest.TestCase): self.assertRaises(TypeError, tee, 3) self.assertRaises(TypeError, tee, [1,2], 'x') + try: + class A(tee): pass + except TypeError: + pass + else: + self.fail("tee constructor should not be subclassable") + + # tee_iterator should not be instantiable + a, b = tee(xrange(10)) + self.assertRaises(TypeError, type(a)) + self.assert_(a is iter(a)) # tee_iterator should support __iter__ + def test_StopIteration(self): self.assertRaises(StopIteration, izip().next) |