subunit is used in zope.testrunner
It's test fail under Python 3(.4). Example:
Error in test test_print_failure_containing_utf8_bytestrings (zope.testrunner.tests.test_subunit.TestSubunitTracebackPrinting)
Traceback (most recent call last):
File "/usr/lib/python3.4/unittest/case.py", line 57, in testPartExecutor
yield
File "/usr/lib/python3.4/unittest/case.py", line 570, in run
self.setUp()
File "/home/menesis/src/zope/zopetoolkit/trunk/src/zope.testrunner/.tox/py34/lib/python3.4/site-packages/zope/testrunner/tests/test_subunit.py", line 57, in setUp
options, stream=self.output)
File "/home/menesis/src/zope/zopetoolkit/trunk/src/zope.testrunner/.tox/py34/lib/python3.4/site-packages/zope/testrunner/formatter.py", line 790, in __init__
self._subunit = subunit.TestProtocolClient(self._stream)
File "/home/menesis/src/zope/zopetoolkit/trunk/src/zope.testrunner/python_subunit-0.0.18-py3.4.egg/subunit/__init__.py", line 621, in __init__
stream = make_stream_binary(stream)
File "/home/menesis/src/zope/zopetoolkit/trunk/src/zope.testrunner/python_subunit-0.0.18-py3.4.egg/subunit/__init__.py", line 1294, in make_stream_binary
return _unwrap_text(stream)
File "/home/menesis/src/zope/zopetoolkit/trunk/src/zope.testrunner/python_subunit-0.0.18-py3.4.egg/subunit/__init__.py", line 1313, in _unwrap_text
return stream.buffer
AttributeError: '_io.StringIO' object has no attribute 'buffer'
So, I'm a bit uncomfortable with the patch - because we require the ability to write raw bytes to a stream - and _io.StringIO will not accept raw bytes. What zope's own tests should be doing is something like:
bytestream = io.BytesIO()
stringstream = io.TextIOWrappe
# now you can do string operations on stringstream and byte operations on bytestream.
which will work on all pythons from 2.6 through 3.4 and pypy.