yii2-app-basic/tests/unit/models/UserTest.php

<?php

namespace tests\unit\models;

#use yii\test\DbTestTrait;

class UserTest extends \yii\codeception\TestCase
{

	use DbTestTrait;

	protected function setUp()
	{
		/*
		 *
		 * you can load fixtures in this way
		 *
		parent::setUp();
		$this->loadFixtures([
			'tbl_user',
		]);
		 */
	}

}