Description

Fixes #7284
Adds a filter rocket_preload_fonts_processed_extensions to customize extension of fonts sent to the beacon script.

Example of usage:

apply_filters( 'rocket_preload_fonts_processed_extensions', function () {
	return [
		'woff2',
		'woff',
	];
});

Type of change

• Enhancement (non-breaking change which improves an existing functionality).

Detailed scenario

What was tested

Integration tests are making sure that processed_extensions is added to the JS variable used by the beacon (rocket_beacon_data).

How to test

Just open a page that would include the beacon, and make sure that processed_extensions is added to the JS variable used by the beacon (rocket_beacon_data).
Also, you can change its value by using the filter rocket_preload_fonts_processed_extensions, example of usage:

apply_filters('rocket_preload_fonts_processed_extensions', function () {
return ['woff2', 'ttf'];
});

Technical description

Documentation

This pull request includes changes to the handling of font extensions in the rocket_beacon_data object and the addition of a filter for processed font extensions. The most important changes are the introduction of a new array for processed font extensions and the updates to various HTML fixture files to include this new data.

Enhancements to font extension processing:

• inc/Engine/Media/PreloadFonts/Frontend/Controller.php: Added a new array processed_extensions for font extensions and applied a filter rocket_preload_fonts_processed_extensions to it.

Updates to HTML fixture files:

• tests/Fixtures/inc/Engine/Common/PerformanceHints/Frontend/Subscriber/HTML/no_closing_body_tag_output.html: Updated the rocket_beacon_data object to include the new processed_extensions array.
• tests/Fixtures/inc/Engine/Common/PerformanceHints/Frontend/Subscriber/HTML/output_double_body_tag.html: Updated the rocket_beacon_data object to include the new processed_extensions array.
• tests/Fixtures/inc/Engine/Common/PerformanceHints/Frontend/Subscriber/HTML/output_w_beacon.html: Updated the rocket_beacon_data object to include the new processed_extensions array.
• tests/Fixtures/inc/Engine/Common/PerformanceHints/Frontend/Subscriber/HTML/output_with_beacon_and_atf_opt.html: Updated the rocket_beacon_data object to include the new processed_extensions array.
• tests/Fixtures/inc/Engine/Common/PerformanceHints/Frontend/Subscriber/HTML/output_with_beacon_and_only_lrc_opt.html: Updated the rocket_beacon_data object to include the new processed_extensions array.

New dependencies

None

Risks

None

Mandatory Checklist

Code validation

• I validated all the Acceptance Criteria. If possible, provide screenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Code style

• I wrote a self-explanatory code about what it does.
• I protected entry points against unexpected inputs.
• I did not introduce unnecessary complexity.
• Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.