function testMessage($compare)
 {
     $message = '';
     foreach ($this->expected as $key => $value) {
         if (isset($compare[$key])) {
             $e = new EqualExpectation($value);
             if ($e->test($compare[$key])) {
                 $message .= $key . ' ok.';
             } else {
                 $message .= $key . ' => ' . $e->overlayMessage($compare[$key], $this->_dumper);
             }
         } else {
             return $key . ' not found';
         }
     }
     return $message;
 }