Refs #12159 throw exception at the latest possible point to fix unit tests

extension/Classes/Core/Helper/Path.php

@@ -225,14 +225,17 @@ class Path
     }
 
     /**
-     * If the base url is not set then use relative path.
-     *
      * @param mixed ...$pathPartsToAppend
      * @return string
+     * @throws \UserFormException
      */
     public static function urlApp(...$pathPartsToAppend): string
     {
-        return self::join(self::$urlApp ?? '', $pathPartsToAppend);
+        // ensure base url is configured
+        if (is_null(self::$urlApp) || self::$urlApp === '') {
+            Thrower::userFormException('Base url not configured.', 'Go to QFQ extension configuration in the Typo3 backend and fill in a value for config.baseUrl');
+        }
+        return self::join(self::$urlApp, $pathPartsToAppend);
     }
 
     /**

extension/Classes/Core/Store/Config.php

@@ -113,12 +113,7 @@ class Config {
 
         self::$config = $config;
 
-        // ensure base url is configured and use it for urls
-        $baseUrl = self::get(SYSTEM_BASE_URL);
-        if (is_null($baseUrl) || $baseUrl === '') {
-            Thrower::userFormException('Base url not configured.', 'Go to QFQ extension configuration in the Typo3 backend and fill in a value for config.baseUrl');
-        }
-        Path::setUrlApp($baseUrl);
+        Path::setUrlApp(self::get(SYSTEM_BASE_URL));
 
         // Set log paths
         Path::overrideLogPathsFromConfig();