#32516: reorder_suite(reverse=True) isn't a strict reversal when duplicates are
present
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               Reporter:  Chris      |          Owner:  nobody
  Jerdonek                           |
                   Type:             |         Status:  assigned
  Uncategorized                      |
              Component:  Testing    |        Version:  3.1
  framework                          |
               Severity:  Normal     |       Keywords:  reorder_suite
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
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 I noticed that when test duplicates are present, passing `reverse=True` to
 
[https://github.com/django/django/blob/286fb73b6962d197ed0cf041755fb724cfe08600/django/test/runner.py#L767
 reorder_suite()] isn't always a strict reversal. For example, if the tests
 given are `[test1, test2, test3, test1]`, then the forward direction will
 be `[test1, test2, test3]`, but the reversed direction will be `[test1,
 test3, test2]`.

 This should be easy to fix by reversing only after duplicates are removed.
 I would suggest fixing this only after
 [https://github.com/django/django/pull/14085 PR #14085] is merged, since
 there will be less code at that point.

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Ticket URL: <https://code.djangoproject.com/ticket/32516>
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