Check if WordPress is controlled by a VCS (Git, Subversion etc).
Test if the site can communicate with WordPress.org.
Check if we can access files without providing credentials.
Check if core files are writable by the web user/group.
Check if the install is using a development branch and can use nightly packages.
Check if the site supports automatic minor updates.
Enqueues the site health scripts.
Run the SQL version checks.
Run tests to determine if auto-updates can run.
Test if auto-updates related constants are set correctly.
Check if updates are intercepted by a filter.
Check if automatic updates are disabled by a filter.
Displays a formats drop-down for filtering items.