[fw-general] Skeleton App Tutorial Album Class Input Filter Change

[Daniel Latter]

Hi All,

On this page:
http://zf2.readthedocs.org/en/latest/user-guide/forms-and-actions.html

Its defines a filter for a form field:

...
$inputFilter->add(array(
 'name'     => 'id',
 'required' => true,
 'filters'  => array(
 array('name' => 'Int'),
 ),
));
...

The problem is with the required = true attribute, it makes the
testAddActionRedirectsAfterValidPost() test method fail, when going through
the unit testing tutorial (
http://zf2.readthedocs.org/en/latest/tutorials/unittesting.html).

Method shown here:
public function testAddActionRedirectsAfterValidPost()
{
    $albumTableMock = $this->getMockBuilder('Album\Model\AlbumTable')
                            ->disableOriginalConstructor()
                            ->getMock();

    $albumTableMock->expects($this->once())
                    ->method('saveAlbum')
                    ->will($this->returnValue(null));

    $serviceManager = $this->getApplicationServiceLocator();
    $serviceManager->setAllowOverride(true);
    $serviceManager->setService('Album\Model\AlbumTable', $albumTableMock);

    $postData = array(
        'title'  => 'Led Zeppelin III',
        'artist' => 'Led Zeppelin',
    );
    $this->dispatch('/album/add', 'POST', $postData);
    $this->assertResponseStatusCode(302);

    $this->assertRedirectTo('/album');
}

I think there are a few ways to sort this I just don't know the best way?
I'm happy to submit a PR but wanted to get everyones thoughts.

Thanks
Daniel