/**
* Test Expires
*/
public function testExpiresAsDate()
{
$date = new \DateTime('2012-12-12T12:12:12+00:00');
$this->cacheControl->setExpires($date);
$this->assertEquals('Wed, 12 Dec 2012 12:12:12 GMT', $this->cacheControl->getExpires());
$this->assertEquals('Wed, 12 Dec 2012 12:12:12 GMT', $this->response->getHeader('Expires'));
}