'str' object has no attribute 'AndReturn'

After the "bug 1213014" is check-in, this issue will be resolved.

git pull the latest code, it can work now.

I'm seeing this with the latest code when running *not* in a virtual environment (I've installed all requirements as debian packages):

$ nosetests --tests=glance.tests.unit.test_store_image:TestStoreAddToBackend.test_bad_metadata_not_dict
glance.tests.unit.test_store_image.TestStoreAddToBackend.test_bad_metadata_not_dict ... ERROR

======================================================================
ERROR: glance.tests.unit.test_store_image.TestStoreAddToBackend.test_bad_metadata_not_dict
----------------------------------------------------------------------
_StringException: Traceback (most recent call last):
  File "/home/ubuntu/git/glance2/glance/glance/tests/unit/test_store_image.py", line 913, in test_bad_metadata_not_dict
    store.__str__().AndReturn(('hello'))
AttributeError: 'str' object has no attribute 'AndReturn'

Running in a virtual env works:

$ tox -evenv -- nosetests --tests=glance.tests.unit.test_store_image:TestStoreAddToBackend.test_bad_metadata_not_dict
GLOB sdist-make: /home/ubuntu/git/glance2/glance/setup.py
venv create: /home/ubuntu/git/glance2/glance/.tox/venv
venv installdeps: -r/home/ubuntu/git/glance2/glance/requirements.txt, -r/home/ubuntu/git/glance2/glance/test-requirements.txt
venv inst: /home/ubuntu/git/glance2/glance/.tox/dist/glance-2014.1.a2.g5048cee.zip
venv runtests: commands[0] | nosetests --tests=glance.tests.unit.test_store_image:TestStoreAddToBackend.test_bad_metadata_not_dict

TestStoreAddToBackend
    test_bad_metadata_not_dict                                   OK    0.00

----------------------------------------------------------------------
Ran 1 test in 0.005s

OK

Printing out what __str__ is defined as in both cases:

Bad case (using installed packages):

XXX store.__str__ (<bound method MockAnything.__str__ of <MockAnything instance>>)

Working case (virtual env):

XXX store.__str__ (__str__() -> None)

mox from the virtual env is not the same as the ubuntu package, even though the versions
seem to match:

$ dpkg -l |grep mox
ii python-mox 0.5.3-1ubuntu5 a mock object framework for Python

.venv/lib/python2.7/site-packages/mox-0.5.3-py2.7.egg-info

$ diff -u /home/ubuntu/git/glance2/glance/.tox/venv/local/lib/python2.7/site-packages/mox.py /usr/lib/python2.7/dist-packages/mox.py |wc
    163 693 5994

If I copy /home/ubuntu/git/glance2/glance/.tox/venv/local/lib/python2.7/site-packages/mox.py to /usr/lib/python2.7/dist-packages/mox.py the test then works. A newer version of the package may be required.

The latest Ubuntu package from packages.ubuntu.org is python-mox_0.5.3-3_all.deb -- I still see the issue.

Downloading from pypi:

https://pypi.python.org/packages/source/m/mox/mox-0.5.3.tar.gz

Versus Ubuntu:

http://archive.ubuntu.com/ubuntu/pool/main/p/python-mox/python-mox_0.5.3.orig.tar.gz

The mox.py files don't match, which surprises me, the ubuntu one for example defines __str__ in class MockAnything:.

This mox source defines __str__ in class MockAnything

https://code.google.com/p/pymox/downloads/detail?name=mox-0.5.3.tar.gz

Found this:

https://code.google.com/p/pymox/issues/detail?id=40

This seems to be a known issue going back to 2011.
We should probably tweak the failing TestStoreAddToBackend
tests to work with both flavours of mox 0.5.3.

Fix up for review: https://review.openstack.org/#/c/49526/

In milestone-proposed at https://review.openstack.org/#/c/50832/