public function objectIsNotModifiedAnymoreIfHmacHasBeenManipulated()
{
$postIdentifier = $this->setupDummyPost();
$this->browser->request('http://localhost/test/fluid/formobjects/edit?fooPost=' . $postIdentifier);
$form = $this->browser->getForm();
$form['__trustedProperties']->setValue($form['__trustedProperties']->getValue() . 'a');
$this->browser->submit($form);
$this->assertSame('500 Internal Server Error', $this->browser->getLastResponse()->getStatus());
}