[wp-trac] [WordPress Trac] #27410: Clear object cache between tests

[WordPress Trac]

#27410: Clear object cache between tests
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 Reporter:  rmccue            |       Owner:
     Type:  defect (bug)      |      Status:  closed
 Priority:  normal            |   Milestone:
Component:  Build/Test Tools  |     Version:
 Severity:  normal            |  Resolution:  worksforme
 Keywords:  close             |     Focuses:
------------------------------+-------------------------
Changes (by rmccue):

 * keywords:  close reporter-feedback => close
 * status:  new => closed
 * resolution:   => worksforme
 * milestone:  Awaiting Review =>


Comment:

 Replying to [comment:2 boonebgorges]:
 > Strictly speaking, we should run it during `setUp()`, to be absolutely
 sure that the cache is clean *before* each test is run. And, lo and
 behold, we do!
 https://core.trac.wordpress.org/browser/tags/4.0/tests/phpunit/includes/testcase.php#L39
 >
 > My guess is that you are not calling `parent::setUp()` in your test
 class's `setUp()` method. It should be the first thing anytime you
 override `WP_UnitTestCase::setUp()`. See eg
 https://core.trac.wordpress.org/browser/tags/4.0/tests/phpunit/tests/post.php.

 Aha. I am calling that, but the [https://wordpress.org/plugins/memcached/
 canonical memcache extension] doesn't obey
 [https://plugins.trac.wordpress.org/browser/memcached/trunk/object-
 cache.php#L197 cache flushes] on multisite. Not entirely sure why.

 (Also, weird that `flush_cache` reaches into the internals of the cache
 implementation. Really not a fan of that.)

 Closing for now, as I think this is a bug in the memcache object cache.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27410#comment:3>
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