Controller testing lithium

ArticleControllerTest.php

<?php

namespace app\tests\cases\controllers;

use app\controllers\ArticlesController;
use app\tests\mocks\MockArticlesController;

class ArticlesControllerTest extends \lithium\test\Unit {

	protected $_controller;

	public function setUp() {
		$this->_controller = new MockArticlesController();
	}

	public function tearDown() {}

	public function testIndexList() {

		$this->_controller->index();
		$render = $this->_controller->access('_render');
		$viewVars = $render['data'];
		$this->assertTrue(isset($viewVars['test']),"The index 'test' isn't set");
		$this->assertEqual("test",$viewVars['test'],"The string should be 'test'");

	}

}

ArticlesController.php

<?php

namespace app\controllers;

class ArticlesController extends \lithium\action\Controller {

	public function index() {

		$this->set(array('test' => 'test'));

	}

}

MockArticlesController.php

<?php

namespace app\tests\mocks;

use app\controllers\ArticlesController;

class MockArticlesController extends ArticlesController {

	public function access($varName) {
		return $this->{$varName};
	}

}