Fix unit tests

extensions/ter_fe2/Classes/Service/ExtensionIndexService.php

@@ -119,13 +119,7 @@ class ExtensionIndexService implements LoggerAwareInterface
         $dom = new \DOMDocument('1.0', 'utf-8');
         $dom->formatOutput = true;
         $extensionsObj = $dom->appendChild(new \DOMElement('extensions'));
-        $distributionBaseUrl = implode(
-            '',
-            [
-                (string)GeneralUtility::makeInstance(SiteFinder::class)->getSiteByIdentifier('extensions')->getBase() . '/',
-                ResourceFactory::getInstance()->getDefaultStorage()->getFolder('ter')->getPublicUrl()
-            ]
-        );
+        $distributionBaseUrl = $this->getDistributionBaseUrl();
 
         // Create the nested XML structure:
         foreach ($extensionsAndVersionsArr as $extensionKey => $extensionVersionsArr) {
@@ -260,4 +254,15 @@ class ExtensionIndexService implements LoggerAwareInterface
             ? (string)serialize(json_decode($dependencies, true))
             : '';
     }
+
+    protected function getDistributionBaseUrl(): string
+    {
+        return implode(
+            '',
+            [
+                (string)GeneralUtility::makeInstance(SiteFinder::class)->getSiteByIdentifier('extensions')->getBase() . '/',
+                GeneralUtility::makeInstance(ResourceFactory::class)->getDefaultStorage()->getFolder('ter')->getPublicUrl()
+            ]
+        );
+    }
 }

extensions/ter_fe2/Tests/Unit/Service/ExtensionIndexServiceTest.php

@@ -134,7 +134,18 @@ class ExtensionIndexServiceTest extends UnitTestCase
   </extension>
     </extensions>
 ';
-        $subject = new ExtensionIndexService(Environment::getVarPath() . '/tests-extensions-xml');
+        $subject = self::getAccessibleMock(
+            ExtensionIndexService::class,
+            ['getDistributionBaseUrl'],
+            [Environment::getVarPath() . '/tests-extensions-xml'],
+            '',
+            false
+        );
+        $subject
+            ->expects(self::once())
+            ->method('getDistributionBaseUrl')
+            ->willReturn('https://ter.local/fileadmin/ter/');
+
         $extensions = [
             'acme' => [
                 'downloads' => 13,