public function testSerializeWithAttachment()
{
$text = "hello worlds";
$message = new Message($text);
$message->attach(new Attachment('plain text fallback'));
$this->assertEquals(array("text" => $text, "attachments" => array(array("fallback" => "plain text fallback"))), $message->serialize());
}
function __construct($url, Message $message)
{
$this->url = $url;
$this->setBody($message->serialize());
}
