Sergey Biryukov 8616ad913a Filesystem API: Add a return value for wp_delete_file().
This addresses a discrepancy where using `unlink()` allows for checking if it was successful via the return value, but `wp_delete_file()` did not have a return value, making it impossible to verify the result without doing overhead checks if the file still exists.

This also brings more consistency with the other `wp_delete_*()` functions, specifically:

* `wp_delete_file_from_directory()`
* `wp_delete_post()`
* `wp_delete_post_revision()`
* `wp_delete_attachment()`
* `wp_delete_attachment_files()`
* `wp_delete_comment()`
* `wp_delete_nav_menu()`
* `wp_delete_term()`
* `wp_delete_site()`
* `wp_delete_user()`

Includes adding basic unit tests for `wp_delete_file()`.

Follow-up to [31575].

Props bedas, debarghyabanerjee, mukesh27, SergeyBiryukov.
Fixes #61590.

git-svn-id: https://develop.svn.wordpress.org/trunk@58715 602fd350-edb4-49c9-b593-d223f7449a82
2024-07-13 05:01:47 +00:00
..

The short version:

1. Create a clean MySQL database and user. DO NOT USE AN EXISTING DATABASE or you will lose data, guaranteed.

2. Copy wp-tests-config-sample.php to wp-tests-config.php, edit it and include your database name/user/password.

3. $ svn up

4. Run the tests from the "trunk" directory:
   To execute a particular test:
      $ phpunit tests/phpunit/tests/test_case.php
   To execute all tests:
      $ phpunit

Notes:

Test cases live in the 'tests' subdirectory. All files in that directory will be included by default. Extend the WP_UnitTestCase class to ensure your test is run.

phpunit will initialize and install a (more or less) complete running copy of WordPress each time it is run. This makes it possible to run functional interface and module tests against a fully working database and codebase, as opposed to pure unit tests with mock objects and stubs. Pure unit tests may be used also, of course.

Changes to the test database will be rolled back as tests are finished, to ensure a clean start next time the tests are run.

phpunit is intended to run at the command line, not via a web server.