Add a check: phpUnit Tests are not prepared ofr Multi DB tests

extension/qfq/tests/phpunit/AbstractDatabaseTest.php

@@ -84,6 +84,13 @@ abstract class AbstractDatabaseTest extends PHPUnit_Framework_TestCase {
             $this->store->setVar('DB_1_NAME', $dbName, STORE_SYSTEM);
         }
 
+        $dbIndexData = $this->store->getVar(SYSTEM_DB_INDEX_DATA, STORE_SYSTEM);
+        $dbIndexQfq = $this->store->getVar(SYSTEM_DB_INDEX_QFQ, STORE_SYSTEM);
+        if ($dbIndexData != $dbIndexQfq) {
+            throw new \qfq\CodeException('phpUnit Tests are not prepared for MultiDB tests');
+        }
+
+
         if (empty($this->dbArray)) {
             $this->dbArray[DB_INDEX_DATA_DEFAULT] = new qfq\Database();
         }

extension/qfq/tests/phpunit/BuildFormPlainTest.php

@@ -521,6 +521,7 @@ class BuildFormPlainTest extends AbstractDatabaseTest {
 
         parent::setUp();
 
+
         // Use always the latest (production) FormEditor: played during QuickFormQuery()
         $this->dbArray[DB_INDEX_DATA_DEFAULT]->sql("DROP TABLE IF EXISTS `Form`");
         $this->dbArray[DB_INDEX_DATA_DEFAULT]->sql("DROP TABLE IF EXISTS `FormElement`");