diff --git a/phpunit/class-wp-rest-global-styles-controller-gutenberg-test.php b/phpunit/class-wp-rest-global-styles-controller-gutenberg-test.php
index 3fd0bb21ce562b..9d4e74a67a3f8f 100644
--- a/phpunit/class-wp-rest-global-styles-controller-gutenberg-test.php
+++ b/phpunit/class-wp-rest-global-styles-controller-gutenberg-test.php
@@ -12,6 +12,11 @@ class WP_REST_Global_Styles_Controller_Gutenberg_Test extends WP_Test_REST_Contr
 	 */
 	protected static $admin_id;
 
+	/**
+	 * @var int
+	 */
+	protected static $editor_id;
+
 	/**
 	 * @var int
 	 */
@@ -44,6 +49,12 @@ public static function wpSetupBeforeClass( $factory ) {
 			)
 		);
 
+		self::$editor_id = $factory->user->create(
+			array(
+				'role' => 'editor',
+			)
+		);
+
 		self::$subscriber_id = $factory->user->create(
 			array(
 				'role' => 'subscriber',
@@ -197,13 +208,30 @@ public function test_get_theme_item_no_user() {
 	/**
 	 * @covers WP_REST_Global_Styles_Controller_Gutenberg::get_theme_item
 	 */
-	public function test_get_theme_item_permission_check() {
+	public function test_get_theme_item_subscriber_permission_check() {
 		wp_set_current_user( self::$subscriber_id );
+		switch_theme( 'emptytheme' );
 		$request  = new WP_REST_Request( 'GET', '/wp/v2/global-styles/themes/emptytheme' );
 		$response = rest_get_server()->dispatch( $request );
 		$this->assertErrorResponse( 'rest_cannot_manage_global_styles', $response, 403 );
 	}
 
+	/**
+	 * @covers WP_REST_Global_Styles_Controller_Gutenberg::get_theme_item
+	 */
+	public function test_get_theme_item_editor_permission_check() {
+		wp_set_current_user( self::$editor_id );
+		switch_theme( 'emptytheme' );
+		$request  = new WP_REST_Request( 'GET', '/wp/v2/global-styles/themes/emptytheme' );
+		$response = rest_get_server()->dispatch( $request );
+		// Checks that the response has the expected keys.
+		$data  = $response->get_data();
+		$links = $response->get_links();
+		$this->assertArrayHasKey( 'settings', $data, 'Data does not have "settings" key' );
+		$this->assertArrayHasKey( 'styles', $data, 'Data does not have "styles" key' );
+		$this->assertArrayHasKey( 'self', $links, 'Links do not have a "self" key' );
+	}
+
 	/**
 	 * @covers WP_REST_Global_Styles_Controller_Gutenberg::get_theme_item
 	 */