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-rw-r--r--Lib/test/test_collections.py10
1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index d352d2a424..7e149808d4 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -1193,6 +1193,16 @@ class TestOrderedDict(unittest.TestCase):
[t[1] for t in reversed(pairs)])
self.assertEqual(list(reversed(od.items())), list(reversed(pairs)))
+ def test_detect_deletion_during_iteration(self):
+ od = OrderedDict.fromkeys('abc')
+ it = iter(od)
+ key = next(it)
+ del od[key]
+ with self.assertRaises(Exception):
+ # Note, the exact exception raised is not guaranteed
+ # The only guarantee that the next() will not succeed
+ next(it)
+
def test_popitem(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)