Fix broken tests.

module/VuFind/src/VuFindTest/Unit/ViewHelperTestCase.php

@@ -37,7 +37,7 @@ namespace VuFindTest\Unit;
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     https://vufind.org/wiki/development:testing:unit_tests Wiki
  */
-abstract class ViewHelperTestCase extends TestCase
+abstract class ViewHelperTestCase extends DbTestCase
 {
     /**
      * Get a working renderer.

module/VuFind/tests/integration-tests/src/VuFindTest/Connection/SolrAuthTest.php

@@ -38,7 +38,7 @@ use VuFindSearch\Query\Query;
  * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
  * @link     https://vufind.org/wiki/development:testing:unit_tests Wiki
  */
-class SolrAuthTest extends \VuFindTest\Unit\TestCase
+class SolrAuthTest extends \VuFindTest\Unit\DbTestCase
 {
     /**
      * Standard setup method.