cakephp3 unitest功能代码无效

Question

下面是cakephp unittest用户sontroller中的代码。我正在使用Cake \ Auth \ DefaultPasswordHasher;

我想看看我是否在发布后成功登录。会话没有设置。如果我预定义会话然后返回true（注释行）.assertSession给出错误。如何设置会话？我可以在提交帖子后查看url onload吗？

public function testLogin()
  {
      $this->enableCsrfToken();
      $this->enableSecurityToken();

      //$this->session(
         [
            'Auth.User.id' => 2, 
            'Auth.User.username' => 'amol'
         ]
       );
      $this->post('/', [
          'username' => 'amol',
          'password' => 'abcdef'
      ]);

      $expected = [
          'id' => 2,
          'username' => 'amol'
      ];

      debug($this->post('/users/login/', [
          'username' => 'amol',
          'password' => 'testing123'
      ]));

      $this->assertSession($expected, 'Auth.User');

      $this->assertResponseCode(200);

      //if($this->debug) debug($this->_requestSession->read());

  }