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Diffstat (limited to 'Lib/test/test_raise.py')
| -rw-r--r-- | Lib/test/test_raise.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Lib/test/test_raise.py b/Lib/test/test_raise.py index 3072c14c88..ba9cfc54d6 100644 --- a/Lib/test/test_raise.py +++ b/Lib/test/test_raise.py @@ -278,6 +278,30 @@ class TestContext(unittest.TestCase): else: self.fail("No exception raised") + def test_cycle_broken(self): + # Self-cycles (when re-raising a caught exception) are broken + try: + try: + 1/0 + except ZeroDivisionError as e: + raise e + except ZeroDivisionError as e: + self.failUnless(e.__context__ is None, e.__context__) + + def test_reraise_cycle_broken(self): + # Non-trivial context cycles (through re-raising a previous exception) + # are broken too. + try: + try: + xyzzy + except NameError as a: + try: + 1/0 + except ZeroDivisionError: + raise a + except NameError as e: + self.failUnless(e.__context__.__context__ is None) + class TestRemovedFunctionality(unittest.TestCase): def test_tuples(self): |