commit 0b5f22d371c6220b1a2e7d0f084782e21b4fa6c4
author Serhiy Storchaka <storchaka@gmail.com> Sun Sep 11 01:39:51 2016 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Sun Sep 11 01:39:51 2016 +0300
tree 8e84798517fdbf7f9e77661469f05e08aa5aeaf0
parent 8b7aff8135d4ac5d8e4ecbfdd6be5e619aa8d546

Backported tests for issue #28070.

Lib/test/test_re.py

diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 588042a..5725a99 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -928,6 +928,9 @@
         q = p.match(upper_char)
         self.assertTrue(q)
 
+        self.assertTrue(re.match('(?ixu) ' + upper_char, lower_char))
+        self.assertTrue(re.match('(?ixu) ' + lower_char, upper_char))
+
     def test_dollar_matches_twice(self):
         "$ matches the end of string, and just before the terminating \n"
         pattern = re.compile('$')