Ticket #47591: terms-pre-query-tests.diff

tests/phpunit/tests/term/query.php

@@ -737 +737 @@
 
                 return $term;
         }
+
+        /**
+         * @ticket 47591
+         */
+        public function test_terms_pre_query_filter_should_bypass_database_query() {
+                global $wpdb;
+
+                add_filter( 'terms_pre_query', array( __CLASS__, 'filter_terms_pre_query' ), 10, 3 );
+
+                $num_queries = $wpdb->num_queries;
+                $q           = new WP_Term_Query(
+                        array(
+                                'fields' => 'ID',
+                        )
+                );
+
+                remove_filter( 'terms_pre_query', array( __CLASS__, 'filter_terms_pre_query' ), 10, 3 );
+
+                // Make sure no queries were executed.
+                $this->assertSame( $num_queries, $wpdb->num_queries );
+
+                // We manually inserted a non-existing term and overrode the results with it.
+                $this->assertSame( array( 555 ), $q->results );
+        }
+
+        public static function filter_terms_pre_query( $terms, $query, $args ) {
+                return array( 555 );
+        }
 }