The test is good, but Jim forgot to check in the updated output.

diff --git a/Lib/test/output/test_StringIO b/Lib/test/output/test_StringIO
index ce983c03d1b8f4f7dbdc6773df44399143f561b8..e2c5c31aeab779e7b49a60ab97c6bcd2417f5220 100644 (file)
--- a/Lib/test/output/test_StringIO
+++ b/Lib/test/output/test_StringIO
@@ -4,8 +4,14 @@ klmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
 
 2
 'abcdefghij'
+'abcde'
+Caught expected ValueError writing to closed StringIO:
+I/O operation on closed file
 abcdefghij
 klmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
 
 2
 'abcdefghij'
+'abcde'
+Caught expected ValueError writing to closed StringIO:
+I/O operation on closed file