Unit tests fail when run from symlinked directory

[Ana Krivokapić]

E.g, horizon git tree is located at /opt/stack/horizon, and there is a symlink in user's home directory which points to the horizon git tree: ~/horizon -> /opt/stack/horizon. Then cd ~/horizon followed by ./run_tests.sh fails:

FAIL: test_customize_dashboard (horizon.test.tests.base.CustomPanelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/akrivoka/horizon/horizon/test/tests/base.py", line 382, in test_customize_dashboard
    self.assertEqual(cats.name, "WildCats")
AssertionError: 'Cats' != 'WildCats'
    "'Cats' != 'WildCats'" = '%s != %s' % (safe_repr('Cats'), safe_repr('WildCats'))
    "'Cats' != 'WildCats'" = self._formatMessage("'Cats' != 'WildCats'", "'Cats' != 'WildCats'")
>> raise self.failureException("'Cats' != 'WildCats'")

======================================================================
FAIL: test_customized_permissions (horizon.test.tests.base.CustomPermissionsTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/akrivoka/horizon/horizon/test/tests/base.py", line 420, in test_customized_permissions
    self.assertEqual(resp.status_code, 302)
AssertionError: 200 != 302
    '200 != 302' = '%s != %s' % (safe_repr(200), safe_repr(302))
    '200 != 302' = self._formatMessage('200 != 302', '200 != 302')
>> raise self.failureException('200 != 302')

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65000

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65000
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=c49fcd3bd92341855ff6e9257cb1750f27224b0e
Submitter: Jenkins
Branch: master

commit c49fcd3bd92341855ff6e9257cb1750f27224b0e
Author: Ana Krivokapic <email address hidden>
Date: Sun Jan 5 17:03:43 2014 +0100

    Make running of unit tests more robust

    Unit tests would fail if run from a symlinked directory.
    To fix this, this patch adds the -P switch to the pwd command,
    to make sure all files are referred to by their actual paths
    and not symlinks.

    Change-Id: Ib7087c11f9dc2c44be3aca8cf94db227a2db72f3
    Closes-Bug: #1266220