CI: Fix another network test

Turns out more than one test was relying upon the object
change determination test. Modifies this test to use the
same pattern of behavior so we are avoiding racing.

Change-Id: I29ee6cab7320d13fcc2eeda27dae08aeb2d98b00

1 files changed, 4 insertions, 0 deletions

diff --git a/ironic/tests/unit/drivers/modules/network/test_common.py b/ironic/tests/unit/drivers/modules/network/test_common.py
index 48be8ceae..e58fcaa20 100644
--- a/ironic/tests/unit/drivers/modules/network/test_common.py
+++ b/ironic/tests/unit/drivers/modules/network/test_common.py
@@ -1065,10 +1065,14 @@ class TestNeutronVifPortIDMixin(db_base.DbTestCase):
         expected_dhcp_opts = [{'opt_name': '61', 'opt_value': 'fake2'}]
         self.port.extra = expected_extra
         self.port.internal_info = expected_ii
+        what_changed_mock = mock.Mock()
+        what_changed_mock.return_value = ['extra', 'internal_info']
+        self.port.obj_what_changed = what_changed_mock
         with task_manager.acquire(self.context, self.node.id) as task:
             self.interface.port_changed(task, self.port)
             dhcp_update_mock.assert_called_once_with(
                 mock.ANY, 'fake-id', expected_dhcp_opts, context=task.context)
+        self.assertEqual(2, what_changed_mock.call_count)
 
     @mock.patch('ironic.dhcp.neutron.NeutronDHCPApi.update_port_dhcp_opts',
                 autospec=True)