`failOnPhpunitWarning="false"` has no effect

[kells64000]

Q	A
PHPUnit version	12.3.11
PHP version	8.4.12
Installation Method	Composer

Summary

The failOnPhpunitWarning phpunit attribute configuration doesn't work.
It is not mentioned in the documentation, but is present in the phpunit.xsd file.

Current behavior

When I run tests with --do-not-fail-on-phpunit-warning cli option, I have no errors.
When I run tests with the failOnPhpunitWarning phpunit attribute configuration, I have an error.

How to reproduce

<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
        bootstrap="vendor/autoload.php"
        failOnPhpunitWarning="false"
>

Expected behavior

No longer have errors when using failOnPhpunitWarning phpunit attribute configuration.

[sebastianbergmann]

Thank you for your report.

Please provide a minimal, self-contained, reproducing test case that shows the problem you are reporting.

Without such a minimal, self-contained, reproducing test case I will not be able to investigate this issue.

[kells64000]

Here is a reproducer to better illustrate my problem.

Finally, when creating it, I realised that my problem only occurs if I run phpunit through docker compose exec, but not if I run it from the container.

[sebastianbergmann]

That sounds like it might be an issue related to your Docker setup. Please provide a minimal, self-contained, reproducing test case that does not involve Docker.

[kells64000]

Thank you, removing the Docker part did indeed help me to better identify my problem.

I've updated the reproducer.

When I run the command php vendor/bin/phpunit . with the failOnPhpunitWarning attribute in the phpunit.dist.xml file, I get an exit code 1 whereas I would expect to get an exit code 0 (which is what I get when I run the command with the do-not-fail-on-phpunit-warning option).

[sebastianbergmann]

Thank you, I was now able to reproduce the issue.