public function setEtag($etag, $weak = false)
{
$etag = trim($etag, '"');
$this->response->setHeader('ETag', (true === $weak ? 'W/' : '') . '"' . $etag . '"');
} /**
* Test Etag
*/
public function testEtag()
{
$this->cacheControl->setEtag('"unique-content-id"');
$this->assertEquals('"unique-content-id"', $this->cacheControl->getEtag());
$this->assertEquals('"unique-content-id"', $this->response->getHeader('ETag'));
}