Fixup: more save implementation of binary data output under Python 3.

Prevent test error under Python 3. Add tests for FileOutput. Document.

git-svn-id: http://svn.code.sf.net/p/docutils/code/trunk@7440 929543f6-e4f2-0310-98a6-ba3bd3dd1d04

1 files changed, 2 insertions, 2 deletions

diff --git a/docutils/test/test_error_reporting.py b/docutils/test/test_error_reporting.py
index fd13356c0..989d04518 100644
--- a/docutils/test/test_error_reporting.py
+++ b/docutils/test/test_error_reporting.py
@@ -158,14 +158,14 @@ class ErrorStringTests(unittest.TestCase):
 # -----------------
 
 # Stub: Buffer with 'strict' auto-conversion of input to byte string:
-class BBuf(BytesIO, object):
+class BBuf(BytesIO, object): # super class object required by Python <= 2.5
     def write(self, data):
         if isinstance(data, unicode):
             data.encode('ascii', 'strict')
         super(BBuf, self).write(data)
 
 # Stub: Buffer expecting unicode string:
-class UBuf(StringIO, object):
+class UBuf(StringIO, object): # super class object required by Python <= 2.5
     def write(self, data):
         # emulate Python 3 handling of stdout, stderr
         if isinstance(data, bytes):