bpo-40360: Handle PendingDeprecationWarning in test_lib2to3. (GH-21694)

diff --git a/Lib/test/test_lib2to3.py b/Lib/test/test_lib2to3.py
index 5eaa5164d490a7b0c9f3d3e8d0e3a48da21a8f50..159a8387e4e97d408e537bd106c4192a41b4527b 100644 (file)
--- a/Lib/test/test_lib2to3.py
+++ b/Lib/test/test_lib2to3.py
@@ -1,5 +1,8 @@
-from lib2to3.tests import load_tests
 import unittest
+from test.support.warnings_helper import check_warnings
+
+with check_warnings(("", PendingDeprecationWarning)):
+    from lib2to3.tests import load_tests
 
 if __name__ == '__main__':
     unittest.main()