use Native\Desktop\Facades\ChildProcess;
 
#[\PHPUnit\Framework\Attributes\Test]
public function example(): void
{
    ChildProcess::fake();
 
    $this->get('/whatever-action');
 
    ChildProcess::assertGet('background-worker');
    ChildProcess::assertMessage(fn (string $message, string|null $alias) => $message === '{"some-payload":"for-the-worker"}' && $alias === null);
}