CakePHP Component Test

<?php

App::uses('Controller', 'Controller');
App::uses('CakeRequest', 'Network');
App::uses('CakeResponse', 'Network');
App::uses('ComponentCollection', 'Controller');
App::uses('StatisticComponent', 'Controller/Component');

// A fake controller to test against
class TestStatisticController extends Controller {
}

class StatisticComponentTest extends CakeTestCase {
  public $StatisticComponent = null;
  public $Controller = null;

  public function setUp() {
    parent::setUp();
    // Setup our component and fake test controller
    $Collection = new ComponentCollection();
    $this->StatisticComponent = new StatisticComponent($Collection);
    $CakeRequest = new CakeRequest();
    $CakeResponse = new CakeResponse();
    $this->Controller = new TestStatisticController($CakeRequest, $CakeResponse);
    $this->StatisticComponent->startup($this->Controller);
  }

  public function testCalcIncreasePercent() {
    $result = $this->StatisticComponent->calcIncreasePercent(1, 0);
    $this->assertEquals(0, $result);

    $result = $this->StatisticComponent->calcIncreasePercent(20, 10);
    $this->assertEquals(100.0, $result);
  }

  public function tearDown() {
    parent::tearDown();
    // Clean up after we're done
    unset($this->StatisticComponent);
    unset($this->Controller);
  }
}