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gh-93814: Add infinite test for itertools.chain.from_iterable (GH-93815)

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fix #93814

Automerge-Triggered-By: GH:rhettinger
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Jeong YunWon 2022-06-15 05:45:50 +09:00 committed by GitHub
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Lib/test/test_itertools.py
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@ -180,6 +180,7 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(list(chain.from_iterable([''])), []) self.assertEqual(list(chain.from_iterable([''])), [])
self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd')) self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd'))
self.assertRaises(TypeError, list, chain.from_iterable([2, 3])) self.assertRaises(TypeError, list, chain.from_iterable([2, 3]))
self.assertEqual(list(islice(chain.from_iterable(repeat(range(5))), 2)), [0, 1])
def test_chain_reducible(self): def test_chain_reducible(self):
for oper in [copy.deepcopy] + picklecopiers: for oper in [copy.deepcopy] + picklecopiers: