Opened 3 years ago

Last modified 2 months ago

#32831 closed Cleanup/optimization

Flaky test in CI: cache.tests.BaseMemcachedTests.test_touch — at Version 3

Reported by: Chris Jerdonek Owned by: nobody
Component: Core (Cache system) Version: dev
Severity: Normal Keywords:
Cc: Triage Stage: Ready for checkin
Has patch: yes Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description (last modified by Chris Jerdonek)

The following tests occasionally fail in CI:

  • cache.tests.PyLibMCCacheTests.test_touch
  • cache.tests.PyMemcacheCacheTests.test_touch 
Traceback (most recent call last):
  File "/home/jenkins/workspace/pull-requests-bionic/database/sqlite3/label/bionic-pr/python/python3.8/tests/cache/tests.py", line 481, in test_touch
    self.assertIs(cache.touch('expire1'), True)
AssertionError: False is not True

The line that fails is here: ​https://github.com/django/django/blob/ed3af3ff4b3cfb72de598f1b39a1028ba3826efb/tests/cache/tests.py#L481

Both test classes inherit from BaseMemcachedTests, which inherits from BaseCacheTests.

Change History (3)

comment:1 by Chris Jerdonek, 3 years ago

Description: modified (diff)

comment:2 by Mariusz Felisiak, 3 years ago

Triage Stage: Unreviewed → Accepted

Yes these tests are flaky (and probably 2-3 more cache tests). We tried to fix them in the past but with no success (see ​PR).

comment:3 by Chris Jerdonek, 3 years ago

Description: modified (diff)
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