nosetests won't run tests on a fresh git clone of glance due to version issue

[Jay Buffington]

As you can see below I have the latest rev of glance in a clean tree. I run
nosetests -x and it fails because it is unable to determine what version of
glance I'm using. Note that I don't have glance installed on the system
anywhere but I have installed all the dependencies listed in the
tools/{pip,test}-requires files.

It looks to me that glance.common.config always looks for the version in
PKG-INFO and that file doesn't exist in a fresh git clone.

    $ git rev-parse HEAD
    9266f8e692ac728c1539198112469358ec507d2a

    $ git status
    # On branch master
    nothing to commit (working directory clean)

    $ nosetests -x

    TestDriver
        test_image_create_defaults ERROR 0.02

    ======================================================================
    ERROR: glance.tests.functional.db.test_simple.TestDriver.test_image_create_defaults
    ----------------------------------------------------------------------
    _StringException: Traceback (most recent call last):
      File "/home/jaybuff/openstack/glance/glance/tests/functional/db/base.py", line 71, in setUp
        super(TestDriver, self).setUp()
      File "/home/jaybuff/openstack/glance/glance/tests/unit/base.py", line 53, in setUp
        super(IsolatedUnitTest, self).setUp()
      File "/home/jaybuff/openstack/glance/glance/tests/unit/base.py", line 38, in setUp
        super(StoreClearingUnitTest, self).setUp()
      File "/home/jaybuff/openstack/glance/glance/tests/utils.py", line 47, in setUp
        config.parse_args(args=[])
      File "/home/jaybuff/openstack/glance/glance/common/config.py", line 87, in parse_args
        version=version.cached_version_string(),
      File "/home/jaybuff/openstack/glance/glance/openstack/common/version.py", line 85, in cached_version_string
        self.version_string())
      File "/home/jaybuff/openstack/glance/glance/openstack/common/version.py", line 63, in version_string
        for part in self.release_string().split('.'):
    AttributeError: 'NoneType' object has no attribute 'split'

[Jay Buffington (jaybuff)]

Note that doing this works around the issue and allows nosetests to run the
tests:

    $ sudo python ./setup.py egg_info
    running egg_info
    writing requirements to glance.egg-info/requires.txt
    writing glance.egg-info/PKG-INFO
    writing top-level names to glance.egg-info/top_level.txt
    writing dependency_links to glance.egg-info/dependency_links.txt
    reading manifest file 'glance.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    warning: no files found matching 'ChangeLog'
    warning: no files found matching 'builddeb.sh'
    warning: no files found matching 'AUTHORS'
    warning: no files found matching 'run_tests.py'
    warning: no files found matching 'ChangeLog'
    writing manifest file 'glance.egg-info/SOURCES.txt'

    $ ln -s glance.egg-info/PKG-INFO .

    $ nosetests -x

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/21485

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/21485
Committed: http://github.com/openstack/glance/commit/6b706f1afc445fd69922c47d663478f3306b7d7f
Submitter: Jenkins
Branch: master

commit 6b706f1afc445fd69922c47d663478f3306b7d7f
Author: Davanum Srinivas <email address hidden>
Date: Thu Feb 7 21:55:02 2013 -0500

    Fix version issue during nosetests run

    Pick up the latest files from oslo

    Fixes LP# 1118845

    Change-Id: I1c9a19508fc18f18936624fa233d3fdc6d31e43f