AbstractSomethingServiceTest.php

<?php
declare(strict_types=1);

namespace Vendor\MyExtension\Test\Unit\Service;

use Vendor\MyExtension\Service\AbstractSomethingService;
use TYPO3\TestingFramework\Core\Unit\UnitTestCase;

class AbstractSomethingServiceTest extends UnitTestCase
{
    protected $resetSingletonInstances = true;

    /**
     * @test
     */
    public function addSomethingCreatesTheCorrectStructure(): void
    {
    …
    }
}