wordpress-develop/tests/phpunit
Tonya Mork 4be76617b9 Editor: Fix performance regression in WP_Theme_JSON_Resolver.
A significant performance regression was added late in WP 6.1 beta cycle when some of the existing caching for `theme.json` processing was removed. The rationale for removing the caching was this code was now used before all the blocks are registered (aka get template data, etc.) and resulted in stale cache that created issues (see [https://github.com/WordPress/gutenberg/issues/44434 Gutenberg Issue 44434] and [https://github.com/WordPress/gutenberg/issues/44619 Gutenberg Issue 44619]). The changes were limited to only reads from the file system. However, it introduced a big impact in performance.

This commit adds caching and checks for blocks with different origins. How? It add caching for the calculated data for core, theme, and user based on the blocks that are registered. If the blocks haven't changed since the last time they were calculated for the origin, the cached data is returned. Otherwise, the data is recalculated and cached.

Essentially, this brings back the previous cache, but refreshing it when the blocks change.

It partially adds unit tests for these changes. Additional tests will be added.

References:
* [https://github.com/WordPress/gutenberg/issues/44772 Performance regression in WP 6.1 for theme.json processing]

Follow-up to [54251], [54399].

Props aristath, oandregal, bernhard-reiter, spacedmonkey, hellofromTonya.
See #56467.

git-svn-id: https://develop.svn.wordpress.org/trunk@54493 602fd350-edb4-49c9-b593-d223f7449a82
2022-10-11 17:15:11 +00:00
..
data Build/Test Tools: Expand unit tests for theme.json. 2022-10-10 14:52:21 +00:00
includes Cache API: Introduce wp_cache_supports() function. 2022-10-10 18:20:28 +00:00
tests Editor: Fix performance regression in WP_Theme_JSON_Resolver. 2022-10-11 17:15:11 +00:00
multisite.xml Build/Test Tools: Update PHPUnit configuration for PHPUnit 9.5.10/8.5.21+. 2021-09-26 03:11:18 +00:00
README.txt Docs: Remove double spaces in tests/phpunit/README.txt. 2022-04-29 13:31:48 +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.