public function testMultiValueHeader()
{
$this->message->headers(array('Cache-Control' => array('no-store, no-cache, must-revalidate', 'post-check=0, pre-check=0', 'max-age=0')));
$expected = array('Cache-Control: no-store, no-cache, must-revalidate', 'Cache-Control: post-check=0, pre-check=0', 'Cache-Control: max-age=0');
$result = $this->message->headers();
$this->assertEqual($expected, $result);
}