[FOLLOWUP][BUGFIX] Handle empty pid list in FrontendConfigurationManager

Add a unit test.

Resolves: #72414
Releases: master, 7.6
Change-Id: Iefff83ae483e4a760a9c7b973e40df50270407d5
Reviewed-on: https://review.typo3.org/45432


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>

typo3/sysext/extbase/Tests/Unit/Configuration/FrontendConfigurationManagerTest.php

@@ -450,6 +450,21 @@ class FrontendConfigurationManagerTest extends \TYPO3\CMS\Core\Tests\UnitTestCas
         );
     }
 
+    /**
+     * @test
+     */
+    public function overrideStoragePidIfStartingPointIsSetCorrectlyHandlesEmptyValuesFromGetTreeList()
+    {
+        $this->mockContentObject->expects($this->any())->method('getTreeList')->will($this->returnValue(''));
+        $this->mockContentObject->data = array('pages' => '0', 'recursive' => 1);
+
+        $frameworkConfiguration = array('persistence' => array('storagePid' => '98'));
+        $this->assertSame(
+            array('persistence' => array('storagePid' => '0')),
+            $this->frontendConfigurationManager->_call('overrideStoragePidIfStartingPointIsSet', $frameworkConfiguration)
+        );
+    }
+
     /**
      * @test
      */