composer require  phpunit/phpunit 

<?php
/**
 * 1、引入autoload.php文件
 * 2、测试案例
 *
 *
 */
namespace tests;

use PHPUnit\Framework\TestCase;

use app\index\controller\Index;

class LoginTest extends TestCase
{
    public function testTure()
    {
        $stack = [];
        $this->assertEquals(0, count($stack));
    }

    public function testIndex()
    {
        $obj = new Index;
        $this->assertEquals(‘YouYiDataCenter v1.0.0‘, $obj->index());
    }

    public function testLogin()
    {
        //...
    }
}