[BUGFIX] Always truncate the DB tables after an integration test (#86)

Author: oliverklee

Tests/Integration/Controller/AbstractControllerTest.php

@@ -8,6 +8,8 @@
 use PhpList\PhpList4\Core\Environment;
 use PHPUnit\DbUnit\Database\Connection;
 use PHPUnit\DbUnit\DataSet\CsvDataSet;
+use PHPUnit\DbUnit\Operation\Factory;
+use PHPUnit\DbUnit\Operation\Operation;
 use PHPUnit\DbUnit\TestCaseTrait;
 use Symfony\Bundle\FrameworkBundle\Client;
 use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
@@ -107,6 +109,16 @@ protected function tearDown()
         Bootstrap::purgeInstance();
     }
 
+    /**
+     * Returns the database operation executed in test cleanup.
+     *
+     * @return Operation
+     */
+    protected function getTearDownOperation(): Operation
+    {
+        return Factory::TRUNCATE();
+    }
+
     /**
      * Returns the test database connection.
      *