public function longNumericStringIsANumber()
 {
     $long1 = new Long('12389192458912430951248958921958154');
     $long2 = new Long('-12389192458912430951248958921958154');
     $this->assertEquals('12389192458912430951248958921958154', $long1->hashCode());
     $this->assertEquals('-12389192458912430951248958921958154', $long2->hashCode());
 }