function testScoreAndRankFor()
{
$leaderboard = new Leaderboard('leaderboard');
for ($i = 1; $i <= 5; $i++) {
$leaderboard->addMember("member_{$i}", $i);
}
$memberData = $leaderboard->scoreAndRankFor('member_1');
$this->assertEquals('member_1', $memberData['member']);
$this->assertEquals(1, $memberData['score']);
$this->assertEquals(5, $memberData['rank']);
}