baoshi-was/tests/Services/Bbb/TestA.php

<?php

namespace Tests\Services\Bbb;

use PHPUnit\Framework\TestCase;

class TestA extends TestCase
{

    /** @var CacheService $service */
    public $service;
    public function setUp(): void
    {
        parent::setUp();
        $this->cacheService = app('CacheService');
    }

    public function testExample()
    {
        $this->assertTrue(true);
    }
}