KERNEL_CLASS in phpunit when testing a bundle?

[tacman]

phpunit testing works fine from within an application, but when trying to run the same tests within the bundle I get an error about the KERNEL_CLASS.

Since I don't have a kernel class in the bundle like I do in the application, what should it be set to?

├ LogicException: You must set the KERNEL_CLASS environment variable to the fully-qualified class name of your Kernel in phpunit.xml / phpunit.xml.dist or override the "Survos\KeyValueBundle\Tests\KeyValueTest::createKernel()" or "Survos\KeyValueBundle\Tests\KeyValueTest::getKernelClass()" method.

I'm using phpunit 10. I've had a hard time finding documentation for testing bundles, especially with newer versions of Symfony and phpunit.

Thx.

[tacman]

By following the patterns of other bundles, I did the following, but I wonder if there's documentation anywhere about testing services within a bundle.

in the xml

    <server name="KERNEL_CLASS" value="Survos\KeyValueBundle\Tests\Fixtures\TestKernel" />
    <server name="KERNEL_DIR" value="tests/Fixtures/" />

Then create the files:

Fixtures/
├── config
│   └── config.yml
└── TestKernel.php

<?php
// TestKernel.php 

namespace Survos\KeyValueBundle\Tests\Fixtures;

use Symfony\Component\Config\Loader\LoaderInterface;
use Symfony\Component\HttpKernel\Kernel;

class TestKernel extends Kernel
{
    public function registerBundles(): iterable
    {
        return [
            new \Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
            new \Survos\KeyValueBundle\SurvosKeyValueBundle(),
        ];
    }

    public function registerContainerConfiguration(LoaderInterface $loader): void
    {
        $loader->load(__DIR__.'/config/config.yml');
    }

    public function getProjectDir(): string
    {
        return __DIR__;
    }
}

# Fixtures/config/config.yml 
framework:
    test: true
    annotations: false

survos_key_value:
    directory: /home/tac/g/sites/headlines/data

There's probably more and maybe a better way to do it, but now I have bundle tests that extend the TestKernel.

[tacman]

Hmm, I thought this was the solution, and indeed it works from the command line now, but I get the KERNEL_CLASS error when trying to debug in PhpStorm. Any suggestions? Or references to the documentation?