function testScoreFor()
 {
     $leaderboard = new Leaderboard('leaderboard');
     for ($i = 1; $i <= Leaderboard::DEFAULT_PAGE_SIZE + 1; $i++) {
         $leaderboard->addMember("member_{$i}", $i);
     }
     $this->assertEquals(14, $leaderboard->scoreFor('member_14'));
 }