[wp-trac] [WordPress Trac] #40283: Add missing global cache groups in tests

[WordPress Trac]

#40283: Add missing global cache groups in tests
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 Reporter:  jeremyfelt    |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  4.8
Component:  Cache API     |    Version:
 Severity:  normal        |   Keywords:  has-patch
  Focuses:  multisite     |
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 Several global cache groups are missing from
 `WP_UnitTestCase::flush_cache()`, which can cause some fun cross-test
 confusion when running multisite tests with object cache enabled.

 Previously, [1332/tests]

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Ticket URL: <https://core.trac.wordpress.org/ticket/40283>
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