[wp-trac] [WordPress Trac] #53911: Test modernization backwards-compatibility backports to help extenders with WordPress cross-version testing

[WordPress Trac]

#53911: Test modernization backwards-compatibility backports to help extenders with
WordPress cross-version testing
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 Reporter:  hellofromTonya    |      Owner:  (none)
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
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 Related to: #46149, #47381, #53904

 This ticket seeks to help with WordPress cross-version testing for
 extenders who are using WordPress' test cases.

 The scope of work was discussed during a live working session with @jrf,
 @johnbillion, @sergeybiryukov, and me. Listen or watch this live session
 [https://youtu.be/SAtiKaUwLU4?t=9389 here] and
 [https://www.youtube.com/watch?v=SAtiKaUwLU4&t=13339s here].

 Scope includes:

 - Determine how far back to backport
 - Determine what test modernization changes to backport
 - Add wrappers for the new snake_case fixture methods

 === Determine how far back to backport

 The PHPUnit Polyfills includes traits and namespaces and supports a
 minimum of PHP 5.4. WordPress had a minimum PHP 5.2 support until
 WordPress 5.2, which increased it to PHP 5.6.

 As part of the discovery process, this ticket will also include a list of
 popular plugins and their minimum supported version.

 === Add wrappers for new snake case fixture methods

 5.9-alpha and newer use snake_case fixture methods (see changeset [51568]
 for more information). Extender's tests using the native PHPUnit fixture
 test methods will need to be changed to the new snake_case fixture
 methods.

 What about WordPress cross-version testing? In <= WordPress 5.8, the
 snake_case fixture methods did not exist.

 This ticket seeks to add wrappers for WordPress versions before 5.9 to
 help extenders with their testing suites.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53911>
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