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authorBenjamin Peterson <benjamin@python.org>2011-07-03 21:25:11 (GMT)
committerBenjamin Peterson <benjamin@python.org>2011-07-03 21:25:11 (GMT)
commitac91341333d27bf39dd8b8c1c3164b5bdc19f03b (patch)
tree39cbb66e8f46780439a8ce370a46a92deb1a7d99 /Lib/test/test_exceptions.py
parent9cf960c94fcd2ec044e1525bb8c51f85c9048f35 (diff)
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never retain a generator's caller's exception state on the generator after a yield/return
This requires some trickery to properly save the exception state if the generator creates its own exception state.
Diffstat (limited to 'Lib/test/test_exceptions.py')
-rw-r--r--Lib/test/test_exceptions.py12
1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index ad9a19e..46ddc82 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -581,6 +581,18 @@ class ExceptionTests(unittest.TestCase):
pass
self.assertEqual(sys.exc_info(), (None, None, None))
+ def test_generator_doesnt_retain_old_exc(self):
+ def g():
+ self.assertIsInstance(sys.exc_info()[1], RuntimeError)
+ yield
+ self.assertEqual(sys.exc_info(), (None, None, None))
+ it = g()
+ try:
+ raise RuntimeError
+ except RuntimeError:
+ next(it)
+ self.assertRaises(StopIteration, next, it)
+
def test_generator_finalizing_and_exc_info(self):
# See #7173
def simple_gen():