Ticket #38540: 38540.diff

src/wp-includes/theme.php

@@ -1763 +1763 @@
  */
 function get_theme_starter_content() {
         $theme_support = get_theme_support( 'starter-content' );
-        if ( ! empty( $theme_support ) ) {
+        if ( is_array( $theme_support ) && ! empty( $theme_support ) ) {
                 $config = $theme_support[0];
         } else {
                 $config = array();

tests/phpunit/tests/theme/getThemeStarterContent.php

@@ +1 @@
+<?php
+
+/**
+ * @group themes
+ */
+class Tests_WP_Theme_Get_Theme_Starter_Content extends WP_UnitTestCase {
+
+
+        function test_add_theme_support_empty() {
+                add_theme_support( 'starter-content', array() );
+
+                $starter_content = get_theme_starter_content();
+
+                $this->assertEmpty( $starter_content );
+        }
+
+        function test_add_theme_support_single_param() {
+                add_theme_support( 'starter-content' );
+
+                $starter_content = get_theme_starter_content();
+
+                $this->assertEmpty( $starter_content );
+        }
+}
+