Question

I’m currently working with Symfony2 and I’m testing my project with PHPUnit.
I want to test an exception when a form is submitted with the wrong parameters or the URL isn’t complete.

I went trough the documentation of Symfony2 and PHPUnit but didn’t find any class/method to do so.

How can I change the value of a form’s action? I want to use PHPUnit so the report created is up to date and I can see the coverage of my code.

EDIT:

To clarify my question, some new content.
How do I test the line starting with ‘>’ in my controller? (throw $this->createNotFoundException('Unable to find ParkingZone entity.');)

When the user modifies the action link, in the controller the process will go trough the exception (or error message, if this action is chosen). How can I test this case?

Controller

/**
 * Edits an existing ParkingZone entity.
 *
 * @Route("/{id}/update", name="parkingzone_update")
 * @Method("post")
 * @Template("RatpGarageL1Bundle:ParkingZone:edit.html.twig")
 */
public function updateAction($id)
{
    $em = $this->getDoctrine()->getEntityManager();

    $entity = $em->getRepository('RatpGarageL1Bundle:ParkingZone')->find($id);

    if (!$entity) {
>        throw $this->createNotFoundException('Unable to find ParkingZone entity.');
    }

    $editForm   = $this->createForm(new ParkingZoneType(), $entity);
    $deleteForm = $this->createDeleteForm($id);

    $request = $this->getRequest();

    $editForm->bindRequest($request);

    if ($editForm->isValid()) {
        $em->persist($entity);
        $em->flush();

        return $this->redirect($this->generateUrl('parkingzone_edit', array('id' => $id)));
    }

    return array(
        'entity'      => $entity,
        'edit_form'   => $editForm->createView(),
        'delete_form' => $deleteForm->createView(),
    );
}

View:

<form action="{{ path('parkingzone_update', { 'id': entity.id }) }}" method="post" {{ form_enctype(form) }}>
    <div class="control-group">
        {{ form_label(form.name, 'Name', { 'attr': {'class': 'control-label'} } ) }}
        <div class="controls error">
            {{ form_widget(form.name, { 'attr': {'class': ''} } ) }}
            <span class="help-inline">{{ form_errors(form.name) }}</span>
        </div>
    </div>
    <div class="control-group">
        {{ form_label(form.orderSequence, 'Rang', { 'attr': {'class': 'control-label'} } ) }}
        <div class="controls error">
            {{ form_widget(form.orderSequence, { 'attr': {'class': ''} } ) }}
            <span class="help-inline">{{ form_errors(form.orderSequence) }}</span>
        </div>
    </div>
    <div class="control-group">
        {{ form_label(form.image, 'Image', { 'attr': {'class': 'control-label'} } ) }}
        <div class="controls error">
            {{ form_widget(form.image, { 'attr': {'class': ''} } ) }}
            <span class="help-inline">{{ form_errors(form.image) }}</span>
        </div>
    </div>
    {{ form_rest(form) }}
    <div class="form-actions">
        <button type="submit" class="btn btn-primary">Enregistrer</button>
        <a href="{{ path('parkingzone') }}" class="btn">Annuler</a>
    </div>
</form>

Answer 1

Symfony itself does not have any objects through which it is possible to manipulate the form’s action as it is set in the html (twig files). However, twig provides the capability to dynamically change the form’s action in the twig file.

The basic approach is for the controller to pass a parameter into the twig file via the render call. Then the twig file can use this parameter to set the form action dynamically. If the controller uses a session variable to determine the value of this parameter then by setting the value of this session variable in the test program it is possible to set the form action specifically for the test.

For example in the controller:

public function indexAction()
{
    $session = $this->get('session');
    $formAction = $session->get('formAction');
    if (empty($formAction)) $formAction = '/my/normal/route';

    ...

    return $this->render('MyBundle:XXX:index.html.twig', array(
        'form' =>  $form->createView(), 'formAction' => $formAction)
    );
}

And then, in the twig file:

<form id="myForm" name="myForm" action="{{ formAction }}" method="post">
...
</form>

And then, in the test program:

$client = static::createClient();
$session = $client->getContainer()->get('session');
$session->set('formAction', '/test/route');
$session->save();

// do the test

This isn’t the only way, there are various possibilities. For example, the session variable could be $testMode and if this variable is set the form passes $testMode = true into the render call. Then the twig file could set the form action to one of two values depending on the value of the testMode variable.