def tearDown(self):
        """Runs after each test method to finalize/tear down test
        environment."""
        try:
            self.mox.UnsetStubs()
            self.stubs.UnsetAll()
            self.stubs.SmartUnsetAll()
            self.mox.VerifyAll()
            # NOTE(vish): Clean up any ips associated during the test.
            ctxt = context.get_admin_context()
            db.fixed_ip_disassociate_all_by_timeout(ctxt, FLAGS.host,
                                                    self.start)
            db.network_disassociate_all(ctxt)
            rpc.Consumer.attach_to_eventlet = self.originalAttach
            for x in self.injected:
                try:
                    x.stop()
                except AssertionError:
                    pass

            if FLAGS.fake_rabbit:
                fakerabbit.reset_all()

            db.security_group_destroy_all(ctxt)
            super(TestCase, self).tearDown()
        finally:
            self.reset_flags()

 def test_fixed_ip_disassociate_all_by_timeout_multi_host(self):
     now = timeutils.utcnow()
     ctxt = context.get_admin_context()
     self._timeout_test(ctxt, now, True)
     result = db.fixed_ip_disassociate_all_by_timeout(ctxt, 'foo', now)
     self.assertEqual(result, 1)
     result = db.fixed_ip_disassociate_all_by_timeout(ctxt, 'bar', now)
     self.assertEqual(result, 0)

 def test_fixed_ip_disassociate_all_by_timeout_single_host(self):
     now = utils.utcnow()
     ctxt = context.get_admin_context()
     self._timeout_test(ctxt, now, False)
     result = db.fixed_ip_disassociate_all_by_timeout(ctxt, "foo", now)
     self.assertEqual(result, 0)
     result = db.fixed_ip_disassociate_all_by_timeout(ctxt, "bar", now)
     self.assertEqual(result, 1)

 def _disassociate_all_by_timeout(cls, context, host, time_str):
     time = timeutils.parse_isotime(time_str)
     return db.fixed_ip_disassociate_all_by_timeout(context, host, time)