Fixed #27648 -- Deprecated (iLmsu) regex groups in url() patterns.

1 files changed, 6 insertions, 1 deletions

diff --git a/tests/utils_tests/test_regex_helper.py b/tests/utils_tests/test_regex_helper.py
index 055da89ee0..f91fd1cec7 100644
--- a/tests/utils_tests/test_regex_helper.py
+++ b/tests/utils_tests/test_regex_helper.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
 import unittest
+import warnings
 
 from django.utils import regex_helper
 
@@ -27,8 +28,12 @@ class NormalizeTests(unittest.TestCase):
     def test_group_ignored(self):
         pattern = r"(?i)(?L)(?m)(?s)(?u)(?#)"
         expected = [('', [])]
-        result = regex_helper.normalize(pattern)
+        with warnings.catch_warnings(record=True) as warns:
+            warnings.simplefilter('always')
+            result = regex_helper.normalize(pattern)
         self.assertEqual(result, expected)
+        for i, char in enumerate('iLmsu#'):
+            self.assertEqual(str(warns[i].message), 'Using (?%s) in url() patterns is deprecated.' % char)
 
     def test_group_noncapturing(self):
         pattern = r"(?:non-capturing)"