[ticket/12261] Add a functional test for redirect after using login_box()

PHPBB3-12261

tests/functional/fixtures/ext/foo/bar/config/routing.yml

@@ -14,6 +14,10 @@ foo_exception_controller:
     pattern: /foo/exception
     defaults: { _controller: foo_bar.controller:exception }
 
+foo_login_redirect_controller:
+    pattern: /foo/login_redirect
+    defaults: { _controller: foo_bar.controller:login_redirect }
+
 foo_redirect_controller:
     pattern: /foo/redirect
     defaults: { _controller: foo_bar.controller:redirect }

tests/functional/fixtures/ext/foo/bar/config/services.yml

@@ -6,6 +6,7 @@ services:
             - @path_helper
             - @template
             - @config
+            - @user
             - %core.root_path%
             - %core.php_ext%