WP_Site_Health_Auto_Updates::test_all_files_writable()
Method: Checks if core files are writable by the web user/group.
Source: wp-admin/includes/class-wp-site-health-auto-updates.php:322
WP_Site_Health_Auto_Updates::test_accepts_dev_updates()
Method: Checks if the install is using a development branch and can use nightly packages.
Source: wp-admin/includes/class-wp-site-health-auto-updates.php:404
WP_Site_Health_Auto_Updates::test_accepts_minor_updates()
Method: Checks if the site supports automatic minor updates.
Source: wp-admin/includes/class-wp-site-health-auto-updates.php:445