ArticleControllerTest.php

<?php

namespace app\tests\cases\controllers;

use app\tests\mocks\MockArticlesController;
use app\tests\mocks\action\MockControllerRequest as Request; //Mocking the Request

class ArticlesControllerTest extends \lithium\test\Unit {

	protected $_controller;

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

	public function tearDown() {
                Session::delete('FlashMessage'); //avoid session flash messages after running tests
        }

	public function testIndexList() {

		$this->_controller->index();
                // or $this->_controller(null, array('action' => 'index', 'args' => array()));
                // that make use of PHP's callable syntax and yield to call `Controller::__invoke()` for dispatching requests to action methods.
                // $this->_controller->__invoke(null, array('action' => 'index', 'args' => array()));

		$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'");

	}

        public function testFoo() {
		$request = new Request();
		$articlesController = new MockArticlesController(compact('request')); //You can give it a custom request with data for example
		$response = $articlesController->foo();

		// Test Flash message is set (reading from session)
		$result_flash = Session::read('FlashMessage.default', array('name' => 'default'));
		$expected_flash = array('message' => 'No article found', 'atts' => array());
		$this->assertEqual($expected_flash, $result_flash);		
                
                // Test a redirection to Articles::index
		$this->assertEqual($response->body(), '');
		$headers = array('Location' => '/articles');
		$this->assertEqual($response->headers, $headers);
        }

}

ArticlesController.php

<?php

namespace app\controllers;

class ArticlesController extends \lithium\action\Controller {

	public function index() {

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

	}


        public function foo() {
               // suppose setting a flash message and redirection for example
        }
}

MockArticlesController.php

<?php

namespace app\tests\mocks;

use app\controllers\ArticlesController;

class MockArticlesController extends ArticlesController {

	protected $_classes = array(
		'media' => 'lithium\net\http\Media',
		'router' => 'lithium\net\http\Router',
		'response' => 'app\tests\mocks\action\MockControllerResponse'
	);

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

}

MockControllerResponse.php

<?php

namespace app\tests\mocks\action;

class MockControllerResponse extends \lithium\action\Response {

	public $hasRendered = false;

	public function render() {
		$this->hasRendered = true;
	}
}

?>