3607968 broke tests on 11.x [#3614402]

Problem/Motivation

New pipeline in 11.x running today hits:

------ ----------------------------------------------------------------------
  Line   core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php
 ------ ----------------------------------------------------------------------
  295    Class Drupal\Tests\Core\Controller\ArgumentResolverInterface not
         found.
         🪪  class.notFound
         💡  Learn more at https://phpstan.org/user-guide/discovering-symbols
  296    Trying to mock an undefined method getArguments() on class
         Drupal\Tests\Core\Controller\ArgumentResolverInterface.
         🪪  phpunit.mockMethod
 ------ ----------------------------------------------------------------------
 [ERROR] Found 2 errors

I believe this is caused by the cherry-pick of https://www.drupal.org/project/drupal/issues/3607968 to 11.x

Steps to reproduce

See: https://git.drupalcode.org/project/drupal/-/jobs/11286435

Proposed resolution

Add:

use Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface;

...to: core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php

Remaining tasks

I'll submit an MR for this in a short while unless anyone beats me to it.

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet

Issue fork drupal-3614402

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3614402-3607968-broke-tests

changes, plain diff MR !16513

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Comments

Comment #1

1 August 2026 at 14:02

mcdruid created an issue. See original summary.

Comment #2

mcdruid commented 1 August 2026 at 14:03

Issue summary:

View changes

Comment #3

1 August 2026 at 15:15

mcdruid opened merge request !16513

Comment #4

mcdruid commented 1 August 2026 at 15:29

Adding the use statement might have addressed a phpstan issue, but it actually looks like the cherry-pick is not compatible with older PHP (8.3 and 8.4) as it uses the newer "closures in constant expressions" feature.

For example:

Drupal test run
--------------------------------------------------------------
Drupal Version.......: 11.4-dev
PHP Version..........: 8.3.33
PHP Binary...........: /usr/local/bin/php
PHPUnit Version......: 11.5.55
PHPUnit configuration: /builds/core
Working directory....: /builds
--------------------------------------------------------------
Test discovery
PHPUnit test suite(s): PHPUnit-Unit
--------------------------------------------------------------
PHP Fatal error:  Constant expression contains invalid operations in /builds/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php on line 346
Fatal error: Constant expression contains invalid operations in /builds/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php on line 346