wordpress-develop/tests/phpunit
Adam Silverstein 9bbf3985e3 Media: enable generating multiple mime types for image uploads; specifically WebP versions for JPEG images by default.
This changeset adds the capability for core media uploads to generate sub sized images in more than a single mime type. The output formats for each mime type can be controlled through a filter. WebP is used as an additional output format for JPEG images by default to improve front end performance.

When generating additional mime types, only images which are smaller than the respective original are retained. By default, additional mime type images are only generated for the built-in core image sizes and any custom sizes that have opted in.

Image meta is updated with a new 'sources' array containing file details for each mime type. Each image size in the 'sizes' array also gets a new 'sources' array that contains the image file details for each mime type.

This change also increases image upload retries to accommodate additional image sizes. It also adds a `$mime_type` parameter to the `wp_get_missing_image_subsizes` function and filter.

This change adds three new filters to enable full control of secondary mime image generation and output:

* A new filter `wp_image_sizes_with_additional_mime_type_support` that filters the sizes that support secondary mime type output. Developers can use this to control the output of additional mime type sub-sized images on a per size basis.
* A new filter `wp_upload_image_mime_transforms` that filters the output mime types for a given input mime type. Developers can use this to control generation of additional mime types for a given input mime type or even override the original mime type.
* A new filter `wp_content_image_mimes` which controls image mime type output selection and order for frontend content. Developers can use this to control the mime type output preference order for content images. Content images inserted from the media library will use the available image versions based on the order from this filter.

Thanks to the many contributors who helped develop, test and give feedback on this feature.

A haiku to summarize:

Upload a JPEG
Images of all sizes
Output as WebPs

Props flixos90, MatthiasReinholz, studiolxv, markhowellsmead, eatingrules, pbiron, mukesh27, joegrainger, mehulkaklotar, tweetythierry, akshitsethi, peterwilsoncc, eugenemanuilov, mitogh, shetheliving, clarkeemily, codekraft, mikeschroder, clorith, kasparsd, spacedmonkey, trevorpfromsandee, jb510, scofennellgmailcom, seedsca, cagsmith, karinclimber, dainemawer, baxbridge, grapplerulrich, sobatkras, chynnabenton, tonylocalword, barneydavey, kwillmorth, garymatthews919, olliejones, imarkinteractive, jeffpaul, feastdesignco, webbeetle, masteradhoc.

See #55443.



git-svn-id: https://develop.svn.wordpress.org/trunk@53751 602fd350-edb4-49c9-b593-d223f7449a82
2022-07-21 18:01:01 +00:00
..
data Media: enable generating multiple mime types for image uploads; specifically WebP versions for JPEG images by default. 2022-07-21 18:01:01 +00:00
includes Coding Standards: Move wp-includes/wp-db.php to wp-includes/class-wpdb.php. 2022-07-21 15:58:51 +00:00
tests Media: enable generating multiple mime types for image uploads; specifically WebP versions for JPEG images by default. 2022-07-21 18:01:01 +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.