phpunit failing in HEAD [#3621534]

Problem/Motivation

See https://git.drupalcode.org/issue/jsonapi_extras-3563549/-/jobs/11983364 for a failing run.

The problem is

1) Drupal\Tests\jsonapi_extras\Kernel\EntityToJsonApiTest::testSerialize
PHPUnit\Framework\Exception: Uncaught PHP Exception TypeError: "str_contains(): Argument #1 ($haystack) must be of type string, null given" at /builds/issue/jsonapi_extras-3563549/web/core/modules/jsonapi/tests/modules/jsonapi_response_validator/src/EventSubscriber/ResourceResponseValidator.php line 69
2) Drupal\Tests\jsonapi_extras\Kernel\EntityToJsonApiTest::testRequestStack
PHPUnit\Framework\Exception: Uncaught PHP Exception TypeError: "str_contains(): Argument #1 ($haystack) must be of type string, null given" at /builds/issue/jsonapi_extras-3563549/web/core/modules/jsonapi/tests/modules/jsonapi_response_validator/src/EventSubscriber/ResourceResponseValidator.php line 69
ERRORS!

which is a problem in core.

See https://www.drupal.org/project/drupal/issues/3344629

Steps to reproduce

Proposed resolution

Can be closed without an MR if fixed upstream.

Remaining tasks

User interface changes

API changes

Data model changes

Issue fork jsonapi_extras-3621534

Show commands

Start within a Git clone of the project using the version control instructions.

Add & fetch this issue fork’s repository

Or, if you do not have SSH keys set up on git.drupalcode.org:

Add & fetch this issue fork’s repository

3621534-phpunit-failing-in changes, plain diff MR !92
Check out this branch for the first time

Check out existing branch, if you already have it locally

About issue forks

Comments

Comment #1

7 September 2026 at 18:00

penyaskito created an issue.

Comment #2

f0ns commented 8 September 2026 at 17:09

As described above the root cause is in core, not here. HeaderBag::get() returns NULL for a header present with a NULL value, so the '' default in ResourceResponseValidator does not prevent the TypeError.

Core MR: merge request 17048 (#3344629: Passing null to parameter #1 ($haystack) of type string is deprecated)

Note on scope: I could not reproduce this on 8.x-3.x HEAD. Both EntityToJsonApiTest tests pass there on core 11.4.5. It reproduces on the MR branch for #3563549: Missing config schema for field enhancers, which is what pipeline 11983364 ran.

With the core fix applied, both tests pass: 88 assertions, previously 0.