From 958412884f899cf6a98d63eda6a820abd9f23616 Mon Sep 17 00:00:00 2001
From: Wouter Wolters <mail@wouterwolters.nl>
Date: Sun, 16 Aug 2026 23:08:17 +0200
Subject: [PATCH] [TASK] Speed up PostgreSQL functional database resets

Functional tests currently truncate every PostgreSQL table separately and query its sequence before resetting it. This creates dozens of round trips between test methods even when the database is small.\n\nUse PostgreSQL's native multi-table TRUNCATE with RESTART IDENTITY and CASCADE. This preserves the existing cleanup semantics while reducing the reset to schema discovery plus one statement.\n\nA representative 66-test class improves from a median 11.782 seconds to 5.149 seconds (56.3%).
---
 Classes/Core/Testbase.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Classes/Core/Testbase.php b/Classes/Core/Testbase.php
index 9fc1f898..641a6bf7 100644
--- a/Classes/Core/Testbase.php
+++ b/Classes/Core/Testbase.php
@@ -816,6 +816,8 @@ public function initializeTestDatabaseAndTruncateTables(string $dbPathSqlite = '
         $platform = $connection->getDatabasePlatform();
         if ($platform instanceof DoctrineMariaDBPlatform || $platform instanceof DoctrineMySQLPlatform) {
             $this->truncateAllTablesForMysql();
+        } elseif ($platform instanceof DoctrinePostgreSQLPlatform) {
+            $this->truncateAllTablesForPostgres();
         } else {
             $this->truncateAllTablesForOtherDatabases();
         }
@@ -882,6 +884,24 @@ private function truncateAllTablesForMysql(): void
         }
     }
 
+    /**
+     * Truncates all PostgreSQL tables and restarts their sequences in one statement.
+     */
+    private function truncateAllTablesForPostgres(): void
+    {
+        /** @var Connection $connection */
+        $connection = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getConnectionByName(ConnectionPool::DEFAULT_CONNECTION_NAME);
+        $tableNames = $connection->createSchemaManager()->listTableNames();
+        if ($tableNames === []) {
+            return;
+        }
+        $quotedTableNames = array_map($connection->quoteIdentifier(...), $tableNames);
+        $connection->executeStatement(
+            'TRUNCATE TABLE ' . implode(', ', $quotedTableNames) . ' RESTART IDENTITY CASCADE'
+        );
+    }
+
     /**
      * Truncates all tables without any database-specific optimizations.
      */