Tintri unit tests fail if run alone

[Sean McGinnis]

Tintri unit tests do not do proper setup relying on other unit tests to have done so. Running just "tox -e py35 -- cinder.tests.unit.volume.drivers.test_tintri" results in all tests failing with errors like:

cinder.tests.unit.volume.drivers.test_tintri.TintriDriverTestCase.test_create_cloned_volume
-------------------------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    b'Traceback (most recent call last):'
    b' File "/tmp/cinder/cinder/tests/unit/volume/drivers/test_tintri.py", line 50, in setUp'
    b' self._driver = TintriDriver(**kwargs)'
    b' File "/tmp/cinder/cinder/volume/drivers/tintri.py", line 97, in __init__'
    b' super(TintriDriver, self).__init__(*args, **kwargs)'
    b' File "/tmp/cinder/cinder/volume/drivers/nfs.py", line 123, in __init__'
    b' supports_auto=supports_auto_mosr))'
    b' File "/tmp/cinder/cinder/volume/utils.py", line 1018, in get_max_over_subscription_ratio'
    b' mosr = float(str_value)'
    b"TypeError: float() argument must be a string or a number, not 'Mock'"
    b''

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/600442

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/600442
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=9585e6a15270d49ec936efba825bd9667f8aa6d1
Submitter: Zuul
Branch: master

commit 9585e6a15270d49ec936efba825bd9667f8aa6d1
Author: Sean McGinnis <email address hidden>
Date: Thu Sep 6 08:12:16 2018 -0500

    Tintri: Inherit tests from BaseDriverTestCase

    The Tintri tests would fail when run alone using:

    tox -e py35 -- cinder.tests.unit.volume.drivers.test_tintri

    This fixes that by making sure things are properly initialized by
    inheriting from the BaseDriverTestCase instead of TestCase directly.

    Closes-bug: #1791089

    Change-Id: I7057da284edec743243a54909d313aa2910d8d0d
    Signed-off-by: Sean McGinnis <email address hidden>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/rocky
Review: https://review.openstack.org/639750

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 14.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/639750
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=c8baa2821bdd76fab415a86bcab36d0f699a19d0
Submitter: Zuul
Branch: stable/rocky

commit c8baa2821bdd76fab415a86bcab36d0f699a19d0
Author: Sean McGinnis <email address hidden>
Date: Thu Sep 6 08:12:16 2018 -0500

    Tintri: Inherit tests from BaseDriverTestCase

    The Tintri tests would fail when run alone using:

    tox -e py35 -- cinder.tests.unit.volume.drivers.test_tintri

    This fixes that by making sure things are properly initialized by
    inheriting from the BaseDriverTestCase instead of TestCase directly.

    Closes-bug: #1791089

    Change-Id: I7057da284edec743243a54909d313aa2910d8d0d
    Signed-off-by: Sean McGinnis <email address hidden>
    (cherry picked from commit 9585e6a15270d49ec936efba825bd9667f8aa6d1)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 13.0.5 release.