public function testSort() {
		$collection = new DocumentSet();
		$collection->set(array(
			array('id' => 1, 'name' => 'Annie'),
			array('id' => 2, 'name' => 'Zilean'),
			array('id' => 3, 'name' => 'Trynamere'),
			array('id' => 4, 'name' => 'Katarina'),
			array('id' => 5, 'name' => 'Nunu')
		));

		$collection->sort('name');

		$idsSorted = $collection->map(function ($v) { return $v['id']; })->to('array');
		$this->assertEqual($idsSorted, array(1,4,5,3,2));
	}