public function cacheControlHeaderPassedToSetIsParsedCorrectly($rawFieldValue, $renderedFieldValue)
{
$headers = new Headers();
$this->assertFalse($headers->has('Cache-Control'));
$headers->set('Cache-Control', $rawFieldValue);
$this->assertTrue($headers->has('Cache-Control'));
$this->assertEquals($renderedFieldValue, $headers->get('Cache-Control'));
}