Check Mismatched Tested up to

[davidperezgar]

Fixes #1134

This check validates that the "Tested up to" header matches between the plugin's main file header and the readme.txt file.

Problem

The "Tested up to" header can exist in both:

• The plugin's main file header
• The plugin's readme.txt file

When both are present, they must be exactly the same. If they differ, it can lead to:

• Inconsistent version information displayed on WordPress.org
• Confusion about which WordPress version the plugin actually supports
• The plugin header value overriding the readme value

Solution

The check has been integrated into the Plugin_Header_Fields_Check class and performs the following validation:

1. Skips single-file plugins - Single-file plugins don't have readme.txt files
2. Checks for readme existence - If no readme exists, the check is skipped
3. Compares major versions - Extracts the major version (e.g., "6.7" from "6.7.1") from both locations
4. Reports mismatch - If both values exist and don't match, an error is reported
5. Refactored the Find_Readme trait into a more generic Readme_Utils trait and moved the get_readme_tested_value() method from Plugin_Header_Fields_Check into it for better code reusability.

Implementation Details

Location

• Check Class: includes/Checker/Checks/Plugin_Repo/Plugin_Header_Fields_Check.php
• Method: check_tested_up_to_mismatch()
• Test File: tests/phpunit/tests/Checker/Checks/Tested_Up_To_Check_Tests.php
• Additional Tests: Added to tests/phpunit/tests/Checker/Checks/Plugin_Header_Fields_Check_Tests.php

Error Code

• mismatched_tested_up_to_header

Severity

• 7 (Error)

Test Coverage

The following test cases are included:

1. test_run_with_mismatch() - Verifies error is reported when values don't match
2. test_run_with_match() - Verifies no error when values match
3. test_run_with_readme_only() - Verifies no error when only readme has the value
4. test_run_with_header_only() - Verifies no error when only header has the value
5. test_run_with_single_file_plugin() - Verifies single-file plugins are skipped
6. test_run_with_no_readme() - Verifies no error when readme doesn't exist
7. Tests added to Plugin_Header_Fields_Check_Tests.php for integration testing

Usage

The check runs automatically as part of the Plugin_Header_Fields_Check and will report errors when:

• Both readme.txt and plugin header contain "Tested up to" values
• The major versions don't match

Error Message

When a mismatch is detected, the following error is displayed:

Mismatched "Tested up to": {readme_version} != {plugin_header_version}.

The "Tested up to" value in the readme file must match the "Tested up to" value in the plugin header. 
If the plugin header has a "Tested up to" value, it will override the readme value, which can cause confusion.

Documentation URL

https://developer.wordpress.org/plugins/wordpress-org/how-your-readme-txt-works/#readme-header-information

[github-actions]

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Co-authored-by: davidperezgar <davidperez@git.wordpress.org>
Co-authored-by: ernilambar <nilambar@git.wordpress.org>

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