[wp-trac] [WordPress Trac] #46149: PHPUnit 8.x support

[WordPress Trac]

#46149: PHPUnit 8.x support
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 Reporter:  SergeyBiryukov                       |       Owner:  netweb
     Type:  task (blessed)                       |      Status:  assigned
 Priority:  high                                 |   Milestone:  5.9
Component:  Build/Test Tools                     |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests early php8  |     Focuses:
  needs-dev-note                                 |
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Comment (by jrf):

 To add to @hellofromTonya's comment, the commit workflow for these changes
 will be as follows:
 1. Commit the patch for ticket #47381, which is a prerequisite. The patch
 has been pulled to GitHub, been reviewed by various committers and is now
 ready for commit.
 2. Once that patch has been committed a new PR on GitHub will be opened
 against this ticket with the first set of commits referenced by
 @hellofromTonya above. This first set of commits will introduce the
 PHPUnit Polyfills package and sort out all assertion and expectation
 method changes.
 3. Once that patch has also been committed a next PR on GitHub will be
 opened against this ticket with the second set of commits referenced
 above. This second set of commits will address the `void`return type and
 make the test suite cross-version compatible with PHPUnit 5.7.x up to
 PHPUnit 9.5.x (current) and will enable running of the tests against PHP
 8.1 in CI.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46149#comment:60>
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