test_StringIO
abcdefghij
klmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

2
'abcuvwxyz!'
'abc'
'abcdefghij'
'abcde'
Caught expected ValueError writing to closed StringIO:
I/O operation on closed file
abcdefghij
klmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

2
'abcuvwxyz!'
'abc'
'abcdefghij'
'abcde'
Caught expected ValueError writing to closed StringIO:
I/O operation on closed file