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[Brian Haley <2109788@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The test_simple_execution unit test is randomly failing, had this report
from a requirements change
(https://review.opendev.org/c/openstack/requirements/+/948617):

2025-05-01 09:49:24.161570 | ubuntu-noble | {4} neutron.tests.unit.common.test_utils.ThreadPoolExecutorWithBlockTestCase.test_simple_execution [3.701865s] ... FAILED
2025-05-01 09:49:24.161589 | ubuntu-noble |
2025-05-01 09:49:24.161607 | ubuntu-noble | Captured traceback:
2025-05-01 09:49:24.161618 | ubuntu-noble | ~~~~~~~~~~~~~~~~~~~
2025-05-01 09:49:24.161627 | ubuntu-noble |     Traceback (most recent call last):
2025-05-01 09:49:24.161637 | ubuntu-noble |
2025-05-01 09:49:24.161646 | ubuntu-noble |       File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 178, in func
2025-05-01 09:49:24.161655 | ubuntu-noble |     return f(self, *args, **kwargs)
2025-05-01 09:49:24.161664 | ubuntu-noble |            ^^^^^^^^^^^^^^^^^^^^^^^^
2025-05-01 09:49:24.161689 | ubuntu-noble |
2025-05-01 09:49:24.161699 | ubuntu-noble |       File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/unit/common/test_utils.py", line 763, in test_simple_execution
2025-05-01 09:49:24.161708 | ubuntu-noble |     self.assertTrue(3 < diff_seconds < 3.5)
2025-05-01 09:49:24.161717 | ubuntu-noble |
2025-05-01 09:49:24.161726 | ubuntu-noble |       File "/usr/lib/python3.12/unittest/case.py", line 727, in assertTrue
2025-05-01 09:49:24.161734 | ubuntu-noble |     raise self.failureException(msg)
2025-05-01 09:49:24.161743 | ubuntu-noble |
2025-05-01 09:49:24.161752 | ubuntu-noble |     AssertionError: False is not true

The execution time of 3.701865s was just outside the 3.5 maximum.

Increasing the time window is the simplest fix, I will propose 6 seconds
(2x expected minimum) to account for a possibly slow system, can discuss
further in patch.

** Affects: neutron
     Importance: Medium
     Assignee: Brian Haley (brian-haley)
         Status: In Progress


** Tags: gate-failure unittest

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https://bugs.launchpad.net/bugs/2109788

Title:
  test_simple_execution random unit test failure

Status in neutron:
  In Progress

Bug description:
  The test_simple_execution unit test is randomly failing, had this
  report from a requirements change
  (https://review.opendev.org/c/openstack/requirements/+/948617):

  2025-05-01 09:49:24.161570 | ubuntu-noble | {4} neutron.tests.unit.common.test_utils.ThreadPoolExecutorWithBlockTestCase.test_simple_execution [3.701865s] ... FAILED
  2025-05-01 09:49:24.161589 | ubuntu-noble |
  2025-05-01 09:49:24.161607 | ubuntu-noble | Captured traceback:
  2025-05-01 09:49:24.161618 | ubuntu-noble | ~~~~~~~~~~~~~~~~~~~
  2025-05-01 09:49:24.161627 | ubuntu-noble |     Traceback (most recent call last):
  2025-05-01 09:49:24.161637 | ubuntu-noble |
  2025-05-01 09:49:24.161646 | ubuntu-noble |       File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 178, in func
  2025-05-01 09:49:24.161655 | ubuntu-noble |     return f(self, *args, **kwargs)
  2025-05-01 09:49:24.161664 | ubuntu-noble |            ^^^^^^^^^^^^^^^^^^^^^^^^
  2025-05-01 09:49:24.161689 | ubuntu-noble |
  2025-05-01 09:49:24.161699 | ubuntu-noble |       File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/unit/common/test_utils.py", line 763, in test_simple_execution
  2025-05-01 09:49:24.161708 | ubuntu-noble |     self.assertTrue(3 < diff_seconds < 3.5)
  2025-05-01 09:49:24.161717 | ubuntu-noble |
  2025-05-01 09:49:24.161726 | ubuntu-noble |       File "/usr/lib/python3.12/unittest/case.py", line 727, in assertTrue
  2025-05-01 09:49:24.161734 | ubuntu-noble |     raise self.failureException(msg)
  2025-05-01 09:49:24.161743 | ubuntu-noble |
  2025-05-01 09:49:24.161752 | ubuntu-noble |     AssertionError: False is not true

  The execution time of 3.701865s was just outside the 3.5 maximum.

  Increasing the time window is the simplest fix, I will propose 6
  seconds (2x expected minimum) to account for a possibly slow system,
  can discuss further in patch.

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