test_excutils py34 incompatabilities

[Joshua Harlow]

It seems oslo.utils has a few test case issues when ran with python 3.4...

$ tox -epy34
GLOB sdist-make: /home/harlowja/Dev/oslo.utils/setup.py
py34 create: /home/harlowja/Dev/oslo.utils/.tox/py34
py34 installdeps: -r/home/harlowja/Dev/oslo.utils/requirements.txt, -r/home/harlowja/Dev/oslo.utils/test-requirements.txt
py34 inst: /home/harlowja/Dev/oslo.utils/.tox/dist/oslo.utils-0.2.0.5.g0568beb.zip
py34 runtests: commands[0] | python setup.py testr --slowest --testr-args=
running testr
running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
${PYTHON:-python} -m subunit.run discover -t ./ . --list
running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
${PYTHON:-python} -m subunit.run discover -t ./ . --load-list /tmp/tmpsgqipjkt
running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
${PYTHON:-python} -m subunit.run discover -t ./ . --load-list /tmp/tmpcpxxyogo
======================================================================
FAIL: tests.test_excutils.ForeverRetryUncaughtExceptionsTest.test_exc_retrier_mixed_4exc_1min_gives_2logs
tags: worker-0
----------------------------------------------------------------------
traceback-1: {{{
Traceback (most recent call last):
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/fixture.py", line 112, in cleanUp
    return self._cleanups(raise_errors=raise_first)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/callmany.py", line 88, in __call__
    reraise(error[0], error[1], error[2])
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/testtools/_compat3x.py", line 16, in reraise
    raise exc_obj.with_traceback(exc_tb)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/callmany.py", line 82, in __call__
    cleanup(*args, **kwargs)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/mox3/mox.py", line 289, in VerifyAll
    mock_obj._Verify()
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/mox3/mox.py", line 543, in _Verify
    raise ExpectedMethodCallsError(self._expected_calls_queue)
mox3.mox.ExpectedMethodCallsError: Verify: Expected methods never called:
  0. method.__call__() -> Exception('unexpected 1',)
}}}

Traceback (most recent call last):
testtools.testresult.real._StringException: Empty attachments:
  stderr
  stdout

traceback-1: {{{
Traceback (most recent call last):
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/fixture.py", line 112, in cleanUp
    return self._cleanups(raise_errors=raise_first)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/callmany.py", line 88, in __call__
    reraise(error[0], error[1], error[2])
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/testtools/_compat3x.py", line 16, in reraise
    raise exc_obj.with_traceback(exc_tb)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/fixtures/callmany.py", line 82, in __call__
    cleanup(*args, **kwargs)
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/mox3/mox.py", line 289, in VerifyAll
    mock_obj._Verify()
  File "/home/harlowja/Dev/oslo.utils/.tox/py34/lib/python3.4/site-packages/mox3/mox.py", line 543, in _Verify
    raise ExpectedMethodCallsError(self._expected_calls_queue)
mox3.mox.ExpectedMethodCallsError: Verify: Expected methods never called:
  0. method.__call__() -> Exception('unexpected 1',)
}}}

Full error report attached...

Pip freeze:

$ pip freeze
Babel==1.3
Jinja2==2.7.3
MarkupSafe==0.23
Pygments==1.6
Sphinx==1.2.3
argparse==1.2.1
coverage==3.7.1
discover==0.4.0
docutils==0.12
extras==0.0.3
fixtures==0.3.16
flake8==2.1.0
hacking==0.9.2
iso8601==0.1.10
mccabe==0.2.1
mock==1.0.1
mox3==0.7.0
netaddr==0.7.12
oslo.config==1.4.0
oslo.i18n==1.0.0
oslo.utils==0.2.0.5.g0568beb
oslosphinx==2.2.0
oslotest==1.1.0
pbr==0.10.0
pep8==1.5.6
pyflakes==0.8.1
python-mimeparse==0.1.4
python-subunit==0.0.21
pytz==2014.7
six==1.8.0
stevedore==1.0.0
testrepository==0.0.20
testscenarios==0.4
testtools==1.1.0

[Davanum Srinivas (DIMS) (dims-v)]

Fixed in https://review.openstack.org/#/c/122823/