common\models\LoginForm::login PHP Метод

    public function login()
    {
        if ($this->validate()) {
            return Yii::$app->user->login($this->getUser(), $this->rememberMe ? 3600 * 24 * 30 : 0);
        } else {
            return false;
        }
    }

 public function testCantLoginWithoutPassword()
 {
     test::double('common\\models\\User', ['validatePassword' => true]);
     $model = new LoginForm();
     $model->username = '******';
     $this->assertFalse($model->login());
     $model->password = '******';
     $this->assertTrue($model->login());
 }