From: Jeong YunWon <69878+youknowone@users.noreply.github.com>
Date: Tue, 14 Jun 2022 20:45:50 +0000 (+0900)
Subject: gh-93814: Add infinite test for itertools.chain.from_iterable (GH-93815)
X-Git-Tag: v3.12.0a1~1257
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=274769c61c5f3f3d2d749824cbed26e15813ce14;p=thirdparty%2FPython%2Fcpython.git

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



fix #93814

Automerge-Triggered-By: GH:rhettinger
---

diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 238afbbd883d..f469bfe185e6 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -180,6 +180,7 @@ class TestBasicOps(unittest.TestCase):
         self.assertEqual(list(chain.from_iterable([''])), [])
         self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd'))
         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):
         for oper in [copy.deepcopy] + picklecopiers: