[wp-trac] [WordPress Trac] #31130: WP_INSTALLING causes leakage between unit tests

[WordPress Trac]

#31130: WP_INSTALLING causes leakage between unit tests
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 Reporter:  boonebgorges            |       Owner:  boonebgorges
     Type:  defect (bug)            |      Status:  assigned
 Priority:  normal                  |   Milestone:  4.4
Component:  Build/Test Tools        |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  has-patch dev-feedback  |     Focuses:
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Comment (by adamsilverstein):

 I think I like this better as it doesn't undo this ticket :)

 In [attachment:31130.5.diff]:
 * Moves new `wp_installing` function to load.php, ensuring its available
 for use there

 Fixes a PHP fatal when .maintenance file present.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31130#comment:25>
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