test_get_interface_bridged_time fails at self.assertGreater(t2, t1)

[IWAMOTO Toshihiro]

Traceback (most recent call last):
  File "neutron/tests/functional/agent/linux/test_bridge_lib.py", line 53, in test_get_interface_bridged_time
    self.assertGreater(t2, t1)
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/unittest2/case.py", line 1233, in assertGreater
    self.fail(self._formatMessage(msg, standardMsg))
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/unittest2/case.py", line 690, in fail
    raise self.failureException(msg)
AssertionError: 1471426063.9028516 not greater than 1471426063.9028516

http://logstash.openstack.org/#dashboard/file/logstash.json?query=build_name%3A%5C%22gate-neutron-dsvm-functional%5C%22%20AND%20build_status%3A%5C%22FAILURE%5C%22%20AND%20message%3A%5C%22assertGreater%5C%22

It seems sysfs mtime has only 4ms granularity. (Use attached shell script to confirm.)

sleep(.1) between get_interface_bridged_time would band-aid this bug.

[IWAMOTO Toshihiro (iwamoto)]

http://logs.openstack.org/04/333804/6/check/gate-neutron-dsvm-functional/bb97e78/

[Brian Haley (brian-haley)]

Could always just use assertGreaterEqual()

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/357279

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/357279
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=51ea9b10c73a5990e8e28b78e192e71d46142c71
Submitter: Jenkins
Branch: master

commit 51ea9b10c73a5990e8e28b78e192e71d46142c71
Author: Brian Haley <email address hidden>
Date: Thu Aug 18 11:08:14 2016 -0400

    Fix bridge assertion error when times are equal

    Sysfs mtime has only a 4ms granularity, so sometimes t2 will
    be equal to t1. Change to use assertGreaterEqual() instead.

    Change-Id: Id9a97dc3d5facbf66cd5c774a52f6a1b83712f33
    Closes-bug: #1614380

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 9.0.0.0b3 development milestone.