wordpress-develop/tests/phpunit
Sergey Biryukov 3e50f2861f Code Modernization: Use a consistent check for parent items in WP_Walker.
This affects the `::walk()`, `::paged_walk()`, and `::get_number_of_root_elements()` methods.

PHP 8 changes the way string to number comparisons are performed: https://wiki.php.net/rfc/string_to_number_comparison

In particular, checking if an empty string is equal to zero in PHP 8 evaluates to `false`, not `true`.

For the `WP_Walker` class, this resulted in an incorrect handling of parent items in a few methods.

By explicitly checking for an `empty()` value instead, we make sure the check works as expected in PHP 8 and earlier versions.

Follow-up to [35876], [48960], [49043], [49076].

Props sunxiyuan, aristath, SergeyBiryukov.
Fixes #53474.

git-svn-id: https://develop.svn.wordpress.org/trunk@51204 602fd350-edb4-49c9-b593-d223f7449a82
2021-06-22 19:07:26 +00:00
..
data Themes: Make sure get_file_data() recognizes headers prefixed by <?php tag. 2021-06-18 14:02:44 +00:00
includes Tests: Ignore EOL differences in some tests using multiline string assertions. 2021-06-09 19:41:47 +00:00
tests Code Modernization: Use a consistent check for parent items in WP_Walker. 2021-06-22 19:07:26 +00:00
build.xml Coding Standards: Replace spaced indentation sections of phpunit.xml.dist, multisite.xml, and build.xml with tabs. 2019-01-28 17:20:06 +00:00
multisite.xml Build/Test Tools: Fix code coverage reporting to generate report from src. 2021-03-26 13:23:52 +00:00
README.txt Update tests/README.txt to reflect the new tests directory structure. props jdgrimes. fixes #25133. 2013-08-31 13:42:56 +00:00
wp-mail-real-test.php Code Modernization: Replace dirname( __FILE__ ) calls with __DIR__ magic constant. 2020-02-06 06:31:22 +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.