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| author | Naris R <nariscatboy@gmail.com> | 2018-08-30 16:56:14 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2018-08-30 16:56:14 (GMT) |
| commit | 1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc (patch) | |
| tree | dca9f2435a0fdd8a30e1d3ecc1a3d2e3499379da /Lib/test/test_collections.py | |
| parent | e6dac0077996b1e1f886f036d6f2606237fa4c85 (diff) | |
| download | cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.zip cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.tar.gz cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.tar.bz2 | |
bpo-34427: Fix infinite loop when calling MutableSequence.extend() on self (GH-8813)
Diffstat (limited to 'Lib/test/test_collections.py')
| -rw-r--r-- | Lib/test/test_collections.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py index 2099d23..0b7cb58 100644 --- a/Lib/test/test_collections.py +++ b/Lib/test/test_collections.py @@ -1721,6 +1721,18 @@ class TestCollectionABCs(ABCTestCase): mss.clear() self.assertEqual(len(mss), 0) + # issue 34427 + # extending self should not cause infinite loop + items = 'ABCD' + mss2 = MutableSequenceSubclass() + mss2.extend(items + items) + mss.clear() + mss.extend(items) + mss.extend(mss) + self.assertEqual(len(mss), len(mss2)) + self.assertEqual(list(mss), list(mss2)) + + ################################################################################ ### Counter ################################################################################ |