From 03db43b9a167449dd4a15065d0f7ca16108a72c3 Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov@git.wordpress.org>
Date: Tue, 6 Sep 2022 14:41:08 +0000
Subject: [PATCH] REST API: Add the missing `site_icon_url` to the index.

The `site_icon_url` index was supposed to ship with WordPress 5.6, but was [https://github.com/WordPress/gutenberg/pull/22952 never backported to core].

This commit backports the original PR from Gutenberg repository:
* [https://github.com/WordPress/gutenberg/pull/42957 #42957: REST API: Add the missing 'site_icon_url' to the index]

Follow-up to [52080].

Props Mamaduka, bernhard-reiter, TimothyBlynJacobs.
See #56467.

git-svn-id: https://develop.svn.wordpress.org/trunk@54083 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/rest-api/class-wp-rest-server.php | 2 ++
 tests/phpunit/tests/rest-api/rest-server.php      | 1 +
 tests/qunit/fixtures/wp-api-generated.js          | 3 ++-
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/wp-includes/rest-api/class-wp-rest-server.php b/src/wp-includes/rest-api/class-wp-rest-server.php
index 19b362a4cae2..4e26611bb459 100644
--- a/src/wp-includes/rest-api/class-wp-rest-server.php
+++ b/src/wp-includes/rest-api/class-wp-rest-server.php
@@ -1308,6 +1308,8 @@ protected function add_site_icon_to_index( WP_REST_Response $response ) {
 		$site_icon_id = get_option( 'site_icon', 0 );
 
 		$this->add_image_to_index( $response, $site_icon_id, 'site_icon' );
+
+		$response->data['site_icon_url'] = get_site_icon_url();
 	}
 
 	/**
diff --git a/tests/phpunit/tests/rest-api/rest-server.php b/tests/phpunit/tests/rest-api/rest-server.php
index f04c266425a1..aa927c8b1c76 100644
--- a/tests/phpunit/tests/rest-api/rest-server.php
+++ b/tests/phpunit/tests/rest-api/rest-server.php
@@ -1084,6 +1084,7 @@ public function test_get_index() {
 		// Check site logo and icon.
 		$this->assertArrayHasKey( 'site_logo', $data );
 		$this->assertArrayHasKey( 'site_icon', $data );
+		$this->assertArrayHasKey( 'site_icon_url', $data );
 	}
 
 	/**
diff --git a/tests/qunit/fixtures/wp-api-generated.js b/tests/qunit/fixtures/wp-api-generated.js
index 5c70e70c2bb1..00b6a2f8340d 100644
--- a/tests/qunit/fixtures/wp-api-generated.js
+++ b/tests/qunit/fixtures/wp-api-generated.js
@@ -10781,7 +10781,8 @@ mockedApiResponse.Schema = {
         }
     },
     "site_logo": 0,
-    "site_icon": 0
+    "site_icon": 0,
+    "site_icon_url": ""
 };
 
 mockedApiResponse.oembed = {