public function testAddAttachmentWithoutExtension()
{
$email = new Email();
//ensure that addAttachment appends to the list of attachments
$email->addAttachment("../file_4");
$attachments[] = "../file_4";
$msg_attachments = $email->getAttachments();
$this->assertEquals($attachments[count($attachments) - 1], $msg_attachments[count($msg_attachments) - 1]['file']);
}
