commit c94a1dc4c9a5d23fdb21f6928dd737a59ef3dfb2
author Robert Collins <rbtcollins@hp.com> Sun Jul 26 06:43:13 2015 +1200
committer Robert Collins <rbtcollins@hp.com> Sun Jul 26 06:43:13 2015 +1200
tree abbbf37e11a6ba307ba00eaa2cf40e27d62d09d2
parent 882667203ca638ffce4238740c521c2a8320be09

- Issue #2091: error correctly on open() with mode 'U' and '+'

open() accepted a 'U' mode string containing '+', but 'U' can only be used with
'r'. Patch from Jeff Balogh and John O'Connor.

Lib/test/test_file.py

diff --git a/Lib/test/test_file.py b/Lib/test/test_file.py
index d54e976..94f189a 100644
--- a/Lib/test/test_file.py
+++ b/Lib/test/test_file.py
@@ -139,7 +139,7 @@
 
     def testModeStrings(self):
         # check invalid mode strings
-        for mode in ("", "aU", "wU+"):
+        for mode in ("", "aU", "wU+", "U+", "+U", "rU+"):
             try:
                 f = self.open(TESTFN, mode)
             except ValueError: