Ticket #48957: test-48957.diff

tests/phpunit/tests/feed/rss2.php

@@ -494 +494 @@
                 );
 
         }
+
+        /**
+         * Test get_feed_build_date() works with invalid post dates.
+         *
+         * @ticket 48957
+         */
+        public function test_function_get_feed_build_date_invalid() {
+                $this->go_to( '/?feed=rss2' );
+
+                global $wp_query;
+
+                foreach ( array_keys( $wp_query->posts ) as $post_id ) {
+                        // Replace post modified date with an int instead of a date string
+                        $wp_query->posts[ $post_id ]->post_modified_gmt = 0;
+                }
+
+                $build_date = get_feed_build_date( 'r' );
+
+                // Make sure $build_date is a valid date understood by DateTime
+                $build_date_parsed = date_create( $build_date );
+                $this->assertInstanceOf( DateTime::class, $build_date_parsed );
+        }
+
+
 }