Site Health, REST API: Move async tests to REST API endpoints.

This provides more flexibility when writing tests and benefits from running in a front-end context which is necessary for some tests like checking that updates are supported. Additionally, this provides a more robust interface for developers who want to integrate with Site Health tests.

Because the `wp/v2` endpoint is reserved for modeling core entities, site health is registered in its own `wp-site-health/v1` namespace.

The existing ajax actions have been maintained for backward compatibility.

Props Clorith, chrisvanpatten, afragen, pokhriyal, TimothyBlynJacobs.
Fixes #48105.

Built from https://develop.svn.wordpress.org/trunk@49154


git-svn-id: http://core.svn.wordpress.org/trunk@48916 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/admin-ajax.php

@@ -143,7 +143,15 @@ $core_actions_post = array(
 );
 
 // Deprecated.
-$core_actions_post_deprecated = array( 'wp-fullscreen-save-post', 'press-this-save-post', 'press-this-add-category' );
+$core_actions_post_deprecated = array(
+	'wp-fullscreen-save-post',
+	'press-this-save-post',
+	'press-this-add-category',
+	'health-check-dotorg-communication',
+	'health-check-is-in-debug-mode',
+	'health-check-background-updates',
+	'health-check-loopback-requests',
+);
 $core_actions_post            = array_merge( $core_actions_post, $core_actions_post_deprecated );
 
 // Register core Ajax calls.

wp-admin/includes/ajax-actions.php

@@ -5142,8 +5142,21 @@ function wp_ajax_wp_privacy_erase_personal_data() {
  * Ajax handler for site health checks on server communication.
  *
  * @since 5.2.0
+ * @deprecated 5.6.0 Use WP_REST_Site_Health_Controller::test_dotorg_communication()
+ * @see WP_REST_Site_Health_Controller::test_dotorg_communication()
  */
 function wp_ajax_health_check_dotorg_communication() {
+	_doing_it_wrong(
+		'wp_ajax_health_check_dotorg_communication',
+		sprintf(
+		// translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it.
+			__( 'The Site Health check for %1$s has been replaced with %2$s.' ),
+			'wp_ajax_health_check_dotorg_communication',
+			'WP_REST_Site_Health_Controller::test_dotorg_communication'
+		),
+		'5.6.0'
+	);
+
 	check_ajax_referer( 'health-check-site-status' );
 
 	if ( ! current_user_can( 'view_site_health_checks' ) ) {
@@ -5162,8 +5175,21 @@ function wp_ajax_health_check_dotorg_communication() {
  * Ajax handler for site health checks on background updates.
  *
  * @since 5.2.0
+ * @deprecated 5.6.0 Use WP_REST_Site_Health_Controller::test_background_updates()
+ * @see WP_REST_Site_Health_Controller::test_background_updates()
  */
 function wp_ajax_health_check_background_updates() {
+	_doing_it_wrong(
+		'wp_ajax_health_check_background_updates',
+		sprintf(
+		// translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it.
+			__( 'The Site Health check for %1$s has been replaced with %2$s.' ),
+			'wp_ajax_health_check_background_updates',
+			'WP_REST_Site_Health_Controller::test_background_updates'
+		),
+		'5.6.0'
+	);
+
 	check_ajax_referer( 'health-check-site-status' );
 
 	if ( ! current_user_can( 'view_site_health_checks' ) ) {
@@ -5182,8 +5208,21 @@ function wp_ajax_health_check_background_updates() {
  * Ajax handler for site health checks on loopback requests.
  *
  * @since 5.2.0
+ * @deprecated 5.6.0 Use WP_REST_Site_Health_Controller::test_loopback_requests()
+ * @see WP_REST_Site_Health_Controller::test_loopback_requests()
  */
 function wp_ajax_health_check_loopback_requests() {
+	_doing_it_wrong(
+		'wp_ajax_health_check_loopback_requests',
+		sprintf(
+		// translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it.
+			__( 'The Site Health check for %1$s has been replaced with %2$s.' ),
+			'wp_ajax_health_check_loopback_requests',
+			'WP_REST_Site_Health_Controller::test_loopback_requests'
+		),
+		'5.6.0'
+	);
+
 	check_ajax_referer( 'health-check-site-status' );
 
 	if ( ! current_user_can( 'view_site_health_checks' ) ) {
@@ -5219,8 +5258,21 @@ function wp_ajax_health_check_site_status_result() {
  * Ajax handler for site health check to get directories and database sizes.
  *
  * @since 5.2.0
+ * @deprecated 5.6.0 Use WP_REST_Site_Health_Controller::get_directory_sizes()
+ * @see WP_REST_Site_Health_Controller::get_directory_sizes()
  */
 function wp_ajax_health_check_get_sizes() {
+	_doing_it_wrong(
+		'wp_ajax_health_check_get_sizes',
+		sprintf(
+		// translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it.
+			__( 'The Site Health check for %1$s has been replaced with %2$s.' ),
+			'wp_ajax_health_check_get_sizes',
+			'WP_REST_Site_Health_Controller::get_directory_sizes'
+		),
+		'5.6.0'
+	);
+
 	check_ajax_referer( 'health-check-site-status-result' );
 
 	if ( ! current_user_can( 'view_site_health_checks' ) || is_multisite() ) {

wp-admin/includes/class-wp-site-health-auto-updates.php

@@ -90,46 +90,7 @@ class WP_Site_Health_Auto_Updates {
 	 * @return array The test results.
 	 */
 	public function test_wp_version_check_attached() {
-		if ( ! is_main_site() ) {
+		if ( ! has_filter( 'wp_version_check', 'wp_version_check' ) ) {
-			return;
-		}
-
-		$cookies = wp_unslash( $_COOKIE );
-		$timeout = 10;
-		$headers = array(
-			'Cache-Control' => 'no-cache',
-		);
-		/** This filter is documented in wp-includes/class-wp-http-streams.php */
-		$sslverify = apply_filters( 'https_local_ssl_verify', false );
-
-		// Include Basic auth in loopback requests.
-		if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) {
-			$headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) );
-		}
-
-		$url = add_query_arg(
-			array(
-				'health-check-test-wp_version_check' => true,
-			),
-			admin_url( 'site-health.php' )
-		);
-
-		$test = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) );
-
-		if ( is_wp_error( $test ) ) {
-			return array(
-				'description' => sprintf(
-					/* translators: %s: Name of the filter used. */
-					__( 'Could not confirm that the %s filter is available.' ),
-					'<code>wp_version_check()</code>'
-				),
-				'severity'    => 'warning',
-			);
-		}
-
-		$response = wp_remote_retrieve_body( $test );
-
-		if ( 'yes' !== $response ) {
 			return array(
 				'description' => sprintf(
 					/* translators: %s: Name of the filter used. */
@@ -310,6 +271,11 @@ class WP_Site_Health_Auto_Updates {
 	 * @return array The test results.
 	 */
 	function test_check_wp_filesystem_method() {
+		// Make sure the `request_filesystem_credentials` function is available during our REST call.
+		if ( ! function_exists( 'request_filesystem_credentials' ) ) {
+			require_once ABSPATH . '/wp-admin/includes/file.php';
+		}
+
 		$skin    = new Automatic_Upgrader_Skin;
 		$success = $skin->request_filesystem_credentials( false, ABSPATH );
 
@@ -356,6 +322,11 @@ class WP_Site_Health_Auto_Updates {
 			return false;
 		}
 
+		// Make sure the `get_core_checksums` function is available during our REST call.
+		if ( ! function_exists( 'get_core_checksums' ) ) {
+			require_once ABSPATH . '/wp-admin/includes/update.php';
+		}
+
 		$checksums = get_core_checksums( $wp_version, 'en_US' );
 		$dev       = ( false !== strpos( $wp_version, '-' ) );
 		// Get the last stable version's files and test against that.

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

@@ -133,6 +133,7 @@ class WP_Site_Health {
 				if ( is_string( $test['test'] ) ) {
 					$health_check_js_variables['site_status']['async'][] = array(
 						'test'      => $test['test'],
+						'has_rest'  => ( isset( $test['has_rest'] ) ? $test['has_rest'] : false ),
 						'completed' => false,
 					);
 				}
@@ -2080,6 +2081,7 @@ class WP_Site_Health {
 	 * experiences.
 	 *
 	 * @since 5.2.0
+	 * @since 5.6.0 Added support for `has_rest` and `permissions`.
 	 *
 	 * @return array The list of tests to run.
 	 */
@@ -2153,16 +2155,19 @@ class WP_Site_Health {
 			),
 			'async'  => array(
 				'dotorg_communication' => array(
-					'label' => __( 'Communication with WordPress.org' ),
+					'label'    => __( 'Communication with WordPress.org' ),
-					'test'  => 'dotorg_communication',
+					'test'     => rest_url( 'wp-site-health/v1/tests/dotorg-communication' ),
+					'has_rest' => true,
 				),
 				'background_updates'   => array(
-					'label' => __( 'Background updates' ),
+					'label'    => __( 'Background updates' ),
-					'test'  => 'background_updates',
+					'test'     => rest_url( 'wp-site-health/v1/tests/background-updates' ),
+					'has_rest' => true,
 				),
 				'loopback_requests'    => array(
-					'label' => __( 'Loopback request' ),
+					'label'    => __( 'Loopback request' ),
-					'test'  => 'loopback_requests',
+					'test'     => rest_url( 'wp-site-health/v1/tests/loopback-requests' ),
+					'has_rest' => true,
 				),
 			),
 		);
@@ -2199,9 +2204,10 @@ class WP_Site_Health {
 		 *         Plugins and themes are encouraged to prefix test identifiers with their slug
 		 *         to avoid any collisions between tests.
 		 *
-		 *         @type string $label A friendly label for your test to identify it by.
+		 *         @type string  $label       A friendly label for your test to identify it by.
-		 *         @type mixed  $test  A callable to perform a direct test, or a string Ajax action to be called
+		 *         @type mixed   $test        A callable to perform a direct test, or a string AJAX action to be
-		 *                             to perform an async test.
+		 *                                    called to perform an async test.
+		 *         @type boolean $has_rest    Optional. Denote if `$test` has a REST API endpoint.
 		 *     }
 		 * }
 		 */

wp-admin/js/site-health.js

@@ -11,7 +11,6 @@ jQuery( document ).ready( function( $ ) {
 	var __ = wp.i18n.__,
 		_n = wp.i18n._n,
 		sprintf = wp.i18n.sprintf,
-		data,
 		clipboard = new ClipboardJS( '.site-health-copy-buttons .copy-button' ),
 		isDebugTab = $( '.health-check-body.health-check-debug-tab' ).length,
 		pathsSizesSection = $( '#health-check-accordion-block-wp-paths-sizes' ),
@@ -83,6 +82,11 @@ jQuery( document ).ready( function( $ ) {
 
 		count = SiteHealth.site_status.issues[ issue.status ];
 
+		// If no test name is supplied, append a placeholder for markup references.
+		if ( typeof issue.test === 'undefined' ) {
+			issue.test = issue.status + count;
+		}
+
 		if ( 'critical' === issue.status ) {
 			heading = sprintf(
 				_n( '%s critical issue', '%s critical issues', count ),
@@ -119,10 +123,10 @@ jQuery( document ).ready( function( $ ) {
 		var $progressLabel = $( '.site-health-progress-label', $wrapper );
 		var $circle = $( '.site-health-progress svg #bar' );
 		var totalTests = parseInt( SiteHealth.site_status.issues.good, 0 ) +
-				parseInt( SiteHealth.site_status.issues.recommended, 0 ) +
+			parseInt( SiteHealth.site_status.issues.recommended, 0 ) +
-				( parseInt( SiteHealth.site_status.issues.critical, 0 ) * 1.5 );
+			( parseInt( SiteHealth.site_status.issues.critical, 0 ) * 1.5 );
 		var failedTests = ( parseInt( SiteHealth.site_status.issues.recommended, 0 ) * 0.5 ) +
-				( parseInt( SiteHealth.site_status.issues.critical, 0 ) * 1.5 );
+			( parseInt( SiteHealth.site_status.issues.critical, 0 ) * 1.5 );
 		var val = 100 - Math.ceil( ( failedTests / totalTests ) * 100 );
 
 		if ( 0 === totalTests ) {
@@ -206,15 +210,49 @@ jQuery( document ).ready( function( $ ) {
 
 				this.completed = true;
 
-				$.post(
+				if ( 'undefined' !== typeof( this.has_rest ) && this.has_rest ) {
-					ajaxurl,
+					wp.apiRequest( {
-					data,
+						url: this.test
-					function( response ) {
+					} )
+						.done( function( response ) {
+							/** This filter is documented in wp-admin/includes/class-wp-site-health.php */
+							appendIssue( wp.hooks.applyFilters( 'site_status_test_result', response ) );
+						} )
+						.fail( function( response ) {
+							var description;
+
+							if ( 'undefined' !== typeof( response.responseJSON ) && 'undefined' !== typeof( response.responseJSON.message ) ) {
+								description = response.responseJSON.message;
+							} else {
+								description = __( 'No details available' );
+							}
+
+							addFailedSiteHealthCheckNotice( this.url, description );
+						} )
+						.always( function() {
+							maybeRunNextAsyncTest();
+						} );
+				} else {
+					$.post(
+						ajaxurl,
+						data
+					).done( function( response ) {
 						/** This filter is documented in wp-admin/includes/class-wp-site-health.php */
 						appendIssue( wp.hooks.applyFilters( 'site_status_test_result', response.data ) );
+					} ).fail( function( response ) {
+						var description;
+
+						if ( 'undefined' !== typeof( response.responseJSON ) && 'undefined' !== typeof( response.responseJSON.message ) ) {
+							description = response.responseJSON.message;
+						} else {
+							description = __( 'No details available' );
+						}
+
+						addFailedSiteHealthCheckNotice( this.url, description );
+					} ).always( function() {
 						maybeRunNextAsyncTest();
-					}
+					} );
-				);
+				}
 
 				return false;
 			} );
@@ -225,6 +263,29 @@ jQuery( document ).ready( function( $ ) {
 		}
 	}
 
+	/**
+	 * Add the details of a failed asynchronous test to the list of test results.
+	 *
+	 * @since 5.6.0
+	 */
+	function addFailedSiteHealthCheckNotice( url, description ) {
+		var issue;
+
+		issue = {
+			'status': 'recommended',
+			'label': __( 'A test is unavailable' ),
+			'badge': {
+				'color': 'red',
+				'label': __( 'Unavailable' )
+			},
+			'description': '<p>' + url + '</p><p>' + description + '</p>',
+			'actions': ''
+		};
+
+		/** This filter is documented in wp-admin/includes/class-wp-site-health.php */
+		appendIssue( wp.hooks.applyFilters( 'site_status_test_result', issue ) );
+	}
+
 	if ( 'undefined' !== typeof SiteHealth && ! isDebugTab ) {
 		if ( 0 === SiteHealth.site_status.direct.length && 0 === SiteHealth.site_status.async.length ) {
 			recalculateProgression();
@@ -243,32 +304,13 @@ jQuery( document ).ready( function( $ ) {
 		}
 
 		if ( 0 < SiteHealth.site_status.async.length ) {
-			data = {
+			maybeRunNextAsyncTest();
-				'action': 'health-check-' + SiteHealth.site_status.async[0].test.replace( '_', '-' ),
-				'_wpnonce': SiteHealth.nonce.site_status
-			};
-
-			SiteHealth.site_status.async[0].completed = true;
-
-			$.post(
-				ajaxurl,
-				data,
-				function( response ) {
-					appendIssue( response.data );
-					maybeRunNextAsyncTest();
-				}
-			);
 		} else {
 			recalculateProgression();
 		}
 	}
 
 	function getDirectorySizes() {
-		var data = {
-			action: 'health-check-get-sizes',
-			_wpnonce: SiteHealth.nonce.site_status_result
-		};
-
 		var timestamp = ( new Date().getTime() );
 
 		// After 3 seconds announce that we're still waiting for directory sizes.
@@ -276,20 +318,17 @@ jQuery( document ).ready( function( $ ) {
 			wp.a11y.speak( __( 'Please wait...' ) );
 		}, 3000 );
 
-		$.post( {
+		wp.apiRequest( {
-			type: 'POST',
+			path: '/wp-site-health/v1/directory-sizes'
-			url: ajaxurl,
-			data: data,
-			dataType: 'json'
 		} ).done( function( response ) {
-			updateDirSizes( response.data || {} );
+			updateDirSizes( response || {} );
 		} ).always( function() {
 			var delay = ( new Date().getTime() ) - timestamp;
 
 			$( '.health-check-wp-paths-sizes.spinner' ).css( 'visibility', 'hidden' );
 			recalculateProgression();
 
-			if ( delay > 3000  ) {
+			if ( delay > 3000 ) {
 				/*
 				 * We have announced that we're waiting.
 				 * Announce that we're ready after giving at least 3 seconds

wp-includes/rest-api.php

@@ -316,6 +316,11 @@ function create_initial_rest_routes() {
 	// Block Directory.
 	$controller = new WP_REST_Block_Directory_Controller();
 	$controller->register_routes();
+
+	// Site Health
+	$site_health = WP_Site_Health::get_instance();
+	$controller = new WP_REST_Site_Health_Controller( $site_health );
+	$controller->register_routes();
 }
 
 /**

wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php

@@ -0,0 +1,293 @@
+<?php
+/**
+ * REST API: WP_REST_Site_Health_Controller class
+ *
+ * @package WordPress
+ * @subpackage REST_API
+ * @since 5.6.0
+ */
+
+/**
+ * Core class for interacting with Site Health tests.
+ *
+ * @since 5.6.0
+ *
+ * @see WP_REST_Controller
+ */
+class WP_REST_Site_Health_Controller extends WP_REST_Controller {
+
+	/**
+	 * An instance of the site health class.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @var WP_Site_Health
+	 */
+	private $site_health;
+
+	/**
+	 * Site Health controller constructor.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @param WP_Site_Health $site_health An instance of the site health class.
+	 */
+	public function __construct( $site_health ) {
+		$this->namespace = 'wp-site-health/v1';
+		$this->rest_base = 'tests';
+
+		$this->site_health = $site_health;
+	}
+
+	/**
+	 * Registers API routes.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @see register_rest_route()
+	 */
+	public function register_routes() {
+		register_rest_route(
+			$this->namespace,
+			sprintf(
+				'/%s/%s',
+				$this->rest_base,
+				'background-updates'
+			),
+			array(
+				array(
+					'methods'             => 'GET',
+					'callback'            => array( $this, 'test_background_updates' ),
+					'permission_callback' => function () {
+						return $this->validate_request_permission( 'background_updates' );
+					},
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+
+		register_rest_route(
+			$this->namespace,
+			sprintf(
+				'/%s/%s',
+				$this->rest_base,
+				'loopback-requests'
+			),
+			array(
+				array(
+					'methods'             => 'GET',
+					'callback'            => array( $this, 'test_loopback_requests' ),
+					'permission_callback' => function () {
+						return $this->validate_request_permission( 'loopback_requests' );
+					},
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+
+		register_rest_route(
+			$this->namespace,
+			sprintf(
+				'/%s/%s',
+				$this->rest_base,
+				'dotorg-communication'
+			),
+			array(
+				array(
+					'methods'             => 'GET',
+					'callback'            => array( $this, 'test_dotorg_communication' ),
+					'permission_callback' => function () {
+						return $this->validate_request_permission( 'dotorg_communication' );
+					},
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+
+		register_rest_route(
+			$this->namespace,
+			sprintf(
+				'/%s',
+				'directory-sizes'
+			),
+			array(
+				'methods'             => 'GET',
+				'callback'            => array( $this, 'get_directory_sizes' ),
+				'permission_callback' => function() {
+					return $this->validate_request_permission( 'debug_enabled' ) && ! is_multisite();
+				},
+			)
+		);
+	}
+
+	/**
+	 * Validates if the current user can request this REST endpoint.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @param string $check The endpoint check being ran.
+	 * @return bool
+	 */
+	protected function validate_request_permission( $check ) {
+		$default_capability = 'view_site_health_checks';
+
+		/**
+		 * Filters the capability needed to run a given Site Health check.
+		 *
+		 * @since 5.6.0
+		 *
+		 * @param string $default_capability The default capability required for this check.
+		 * @param string $check              The Site Health check being performed.
+		 */
+		$capability = apply_filters( "site_health_test_rest_capability_{$check}", $default_capability, $check );
+
+		return current_user_can( $capability );
+	}
+
+	/**
+	 * Checks if background updates work as expected.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @return array
+	 */
+	public function test_background_updates() {
+		return $this->site_health->get_test_background_updates();
+	}
+
+	/**
+	 * Checks that the site can reach the WordPress.org API.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @return array
+	 */
+	public function test_dotorg_communication() {
+		return $this->site_health->get_test_dotorg_communication();
+	}
+
+	/**
+	 * Checks that loopbacks can be performed.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @return array
+	 */
+	public function test_loopback_requests() {
+		return $this->site_health->get_test_loopback_requests();
+	}
+
+	/**
+	 * Gets the current directory sizes for this install.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @return array|WP_Error
+	 */
+	public function get_directory_sizes() {
+		if ( ! class_exists( 'WP_Debug_Data' ) ) {
+			require_once( ABSPATH . 'wp-admin/includes/class-wp-debug-data.php' );
+		}
+
+		$sizes_data = WP_Debug_Data::get_sizes();
+		$all_sizes  = array( 'raw' => 0 );
+
+		foreach ( $sizes_data as $name => $value ) {
+			$name = sanitize_text_field( $name );
+			$data = array();
+
+			if ( isset( $value['size'] ) ) {
+				if ( is_string( $value['size'] ) ) {
+					$data['size'] = sanitize_text_field( $value['size'] );
+				} else {
+					$data['size'] = (int) $value['size'];
+				}
+			}
+
+			if ( isset( $value['debug'] ) ) {
+				if ( is_string( $value['debug'] ) ) {
+					$data['debug'] = sanitize_text_field( $value['debug'] );
+				} else {
+					$data['debug'] = (int) $value['debug'];
+				}
+			}
+
+			if ( ! empty( $value['raw'] ) ) {
+				$data['raw'] = (int) $value['raw'];
+			}
+
+			$all_sizes[ $name ] = $data;
+		}
+
+		if ( isset( $all_sizes['total_size']['debug'] ) && 'not available' === $all_sizes['total_size']['debug'] ) {
+			return new WP_Error( 'not_available', __( 'Directory sizes could not be returned.' ), array( 'status' => 500 ) );
+		}
+
+		return $all_sizes;
+	}
+
+	/**
+	 * Gets the schema for each site health test.
+	 *
+	 * @since 5.6.0
+	 *
+	 * @return array The test schema.
+	 */
+	public function get_item_schema() {
+		if ( $this->schema ) {
+			return $this->schema;
+		}
+
+		$this->schema = array(
+			'$schema'    => 'http://json-schema.org/draft-04/schema#',
+			'title'      => 'wp-site-health-test',
+			'type'       => 'object',
+			'properties' => array(
+				'test'        => array(
+					'type'        => 'string',
+					'description' => __( 'The name of the test being run.' ),
+					'readonly'    => true,
+				),
+				'label'       => array(
+					'type'        => 'string',
+					'description' => __( 'A label describing the test.' ),
+					'readonly'    => true,
+				),
+				'status'      => array(
+					'type'        => 'string',
+					'description' => __( 'The status of the test.' ),
+					'enum'        => array( 'good', 'recommended', 'critical' ),
+					'readonly'    => true,
+				),
+				'badge'       => array(
+					'type'        => 'object',
+					'description' => __( 'The category this test is grouped in.' ),
+					'properties'  => array(
+						'label' => array(
+							'type'     => 'string',
+							'readonly' => true,
+						),
+						'color' => array(
+							'type'     => 'string',
+							'enum'     => array( 'blue', 'orange', 'red', 'green', 'purple', 'gray' ),
+							'readonly' => true,
+						),
+					),
+					'readonly'    => true,
+				),
+				'description' => array(
+					'type'        => 'string',
+					'description' => __( 'A more descriptive explanation of what the test looks for, and why it is important for the user.' ),
+					'readonly'    => true,
+				),
+				'actions'     => array(
+					'type'        => 'string',
+					'description' => __( 'HTML containing an action to direct the user to where they can resolve the issue.' ),
+					'readonly'    => true,
+				),
+			),
+		);
+
+		return $this->schema;
+	}
+}

wp-includes/script-loader.php

@@ -1286,7 +1286,7 @@ function wp_default_scripts( $scripts ) {
 		$scripts->add( 'plugin-install', "/wp-admin/js/plugin-install$suffix.js", array( 'jquery', 'jquery-ui-core', 'thickbox' ), false, 1 );
 		$scripts->set_translations( 'plugin-install' );
 
-		$scripts->add( 'site-health', "/wp-admin/js/site-health$suffix.js", array( 'clipboard', 'jquery', 'wp-util', 'wp-a11y' ), false, 1 );
+		$scripts->add( 'site-health', "/wp-admin/js/site-health$suffix.js", array( 'clipboard', 'jquery', 'wp-util', 'wp-a11y', 'wp-api-request' ), false, 1 );
 		$scripts->set_translations( 'site-health' );
 
 		$scripts->add( 'privacy-tools', "/wp-admin/js/privacy-tools$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49153';
+$wp_version = '5.6-alpha-49154';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-settings.php

@@ -261,6 +261,7 @@ require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-themes-controller.p
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-plugins-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-block-directory-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-application-passwords-controller.php';
+require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-site-health-controller.php';
 require ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-meta-fields.php';
 require ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-comment-meta-fields.php';
 require ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-post-meta-fields.php';