public function testMessageSetHtmlBody()
 {
     $this->assertInstanceOf('\\nickcv\\mandrill\\Message', $this->_message->setHtmlBody('<a>testo & co</a><script>alert("ciao");</script>'));
     $this->assertEquals('<a>testo & co</a><script>alert("ciao");</script>', $this->_message->getHtmlBody());
 }