PHPUnit's process isolation doesn't work due to Laravel's application bootstrapping

[l-alexandrov]

Laravel Version

10.34.2

PHP Version

8.3.0

Database Driver & Version

MariaDB 10.4.32

Description

PHPUnit's process isolation feature doesn't work starting from PHPUnit 10.2.0 on Laravel.

Tried to run a minimal test case with process isolation, extending the plain PHPUnit's PHPUnit\Framework\TestCase class and it runs fine.

But, when I try to run it over the Laravel's Testing platform it fails with error Test was run in child process and ended unexpectedly

---

Related sebastianbergmann/phpunit#5595

Steps To Reproduce

1. Create a minimal test case with process isolation, extending the Laravel's TestCase class:

<?php

declare(strict_types=1);

namespace Tests\Unit\Casts;


use Tests\TestCase;

class MyTestCase extends TestCase
{
    /**
     * @test
     * @runInSeparateProcess
     */
    public function it_is_true(): void
    {
        $this->assertTrue(true);
    }

}

2. See the error

[driesvints]

Heya. We don't officially support runInSeparateProcess sorry. We already provide parallel execution with the --parallel flag.

[arclw]

IMP --parallel flag is used to run the multiple tests concurrently to speed up the test running process; it has nothing to do with weather a test method should entirely isolated in its own space to avoid class loading conflicts.
Same tests are working in Laravel base test class in PHP 8.2 but NOT in 8.3; while the annotation works fine in PHPUnit's test case class in PHP 8.3 as well.

[siketyan]

As a workaround, calling restore_error_handler() in tearDown works for me. It is caused by an error handler which is set in HandleExceptions bootstrapper. I don't know why this is caused in PHP 8.3 only.

[Boevsson]

You guys forgot to tearDown properly:

You sohuld call the parent::tearDown()

	protected function tearDown(): void
	{
		parent::tearDown();

		Mockery::close();
	}

[maxxwv]

I don't see it mentioned here, but in 11.21.0 (possibly earlier) this looks like it's fixed by using attributes:

#[RunInSeparateProcess]
public function testDoTheTest(): void
{
    // assertions - I was working with Mockery::mock('overload:App\Path\To\Class');
}

Or

#[RunTestsInSeparateProcesses]
class SomeThingTest extends Test Case {
    //
}