Non-deterministic test: admin_views.tests.AdminViewBasicTest.test_change_list_sorting_model_admin_reverse

[Tim Graham]

Have seen this fail a couple times on Python 3:

Traceback (most recent call last):
  File "/home/jenkins/workspace/django-pull-requests/database/sqlite3/python/python3.4/tests/admin_views/tests.py", line 293, in test_change_list_sorting_model_admin_reverse
    "Results of sorting on ModelAdmin method are out of order.")
  File "/home/jenkins/workspace/django-pull-requests/database/sqlite3/python/python3.4/tests/admin_views/tests.py", line 93, in assertContentBefore
    failing_msg)
AssertionError: False is not true : Results of sorting on ModelAdmin method are out of order.

[parasgithub]

I can't reproduce this.

[Aymeric Augustin]

There's evidence that it fails at least on the CI server.

[Tim Graham]

Saw the failure on the CI server today on Python 2.

[Tim Graham]

See #24316 comment 5 for the cause. I'll mark this as a duplicate of that ticket.

[Tim Graham]

On second thought, since #24316 likely isn't a candidate for backport, how about a fix for the 1.8 and 1.9 branches because it's easy: ​PR.

[Tim Graham <timograham@…>]

In 2939ed4a:

[1.9.x] Fixed #23285 -- Fixed non-deterministic admin_views test.

This test sometimes fail because the checked integers can appear in the
output as memory addresses due to #24316.

[Tim Graham <timograham@…>]

In 11601ee8:

[1.8.x] Fixed #23285 -- Fixed non-deterministic admin_views test.

This test sometimes fail because the checked integers can appear in the
output as memory addresses due to #24316.

Backport of 2939ed4a18864549a25807193ea5af490d632dc6 from stable/1.9.x