public function testToStringIncludesCookieHeaders() {
$bag = new ResponseHeaderBag(array());
$bag
->setCookie(new Cookie('foo', 'bar'));
$this
->assertContains("Set-Cookie: foo=bar; httponly", explode("\r\n", $bag
->__toString()));
$bag
->clearCookie('foo');
$this
->assertContains("Set-Cookie: foo=deleted; expires=" . gmdate("D, d-M-Y H:i:s T", time() - 31536001) . "; httponly", explode("\r\n", $bag
->__toString()));
}