timecop拡張を入れていると、WebTestCase経由のテストでResponse::setLastModifiedが使えない問題の対処 ;)

gistfile1.php

<?php

// ...

if (!extension_loaded('timecop')) {
    $response = $app->sendFile($file, 200, $headers);
} else {
    // timecop hack
    $response = new Symfony\Component\HttpFoundation\BinaryFileResponse($file, 200, $headers, false, null, false, false);
    $date = \DateTime::createFromFormat('U', $response->getFile()->getMTime());
    $date->setTimezone(new \DateTimeZone('UTC'));
    $response->headers->set('Last-Modified', $date->format('D, d M Y H:i:s').' GMT');
}

// ...