Files: wp-admin/includes/class-wp-site-health.php

Test if scheduled events run as intended.

Run the SQL version checks.

WP_Site_Health constructor.

Return an instance of the WP_Site_Health class, or create one if none exist yet.

Enqueues the site health scripts.

Run a Site Health test directly.

Test if loopbacks work as expected.

Test if HTTP requests are blocked.

Test if the REST API is accessible.

Return a set of tests that belong to the site status page.

Add a class to the body HTML tag.

Initiate the WP_Cron schedule test cases.

Populate our list of cron events and store them to a class-wide variable.

Check if any scheduled tasks have been missed.

Check if any scheduled tasks are late.