听风看海

We can use AjaxContext action helper to define a context of an action.

    public function init()
    {
        $ajaxContext = $this->_helper->getHelper('AjaxContext');
        $ajaxContext->addActionContext('get-zip-code', 'json')
                    ->initContext();
    }
    public function getZipCodeAction()
    {
        // that is all! you don't need to do any for json encode
        $this->view->zip = '123';
    }

Since we use AjaxContext then we don’t need to create a get-zip-code.phtml.
Till this step everything is fine.
Then I want to write a unit test for it.

class ZipControllerTest extends Zend_Test_PHPUnit_ControllerTestCase
{
    public function setUp()
    {
        $this->bootstrap = new Zend_Application(
            APPLICATION_ENV, APPLICATION_PATH . '/configs/application.ini');
        parent::setUp();
    }

    /**
     * testICanGetZipCodeAsJsonString
     *
     * @return void
     * @group now
     */
    public function testICanGetHashForCheckingCredit()
    {
        $this->dispatch(
            '/checkout/payone/get-hash-for-checking-credit/format/json');
        $this->assertResponseCode(200);
        $this->assertEquals('{"zip":"123"}', $this->getResponse()->getBody());
    }
}

The second assertion fails. And using var_dump($this->getResponse()->getBody()) we can find out the layout is not disable. Why? Doesn’t AjaxContext work? After a little hacking the Zend_Controller_Action_Helper_AjaxContext I found the AjaxContext will chech the type of Request. It works just when the Request is a Xml Http Request.

In order let test to work, we have to forge the Request before dispatch it.

    /**
     * testICanGetZipCodeAsJsonString
     *
     * @return void
     * @group now
     */
    public function testICanGetHashForCheckingCredit()
    {
        // forge the request as an XMLHttpRequest!
        $this->getRequest()->setHeaders(array('X_REQUESTED_WITH' => 'XMLHttpRequest'));

        $this->dispatch(
            '/checkout/payone/get-hash-for-checking-credit/format/json');
        $this->assertResponseCode(200);
        $this->assertEquals('{"zip":"123"}', $this->getResponse()->getBody());
    }

Now the test working fine.