lithium\tests\cases\util\CollectionTest::testCollectionReduceFilter PHP Method

    public function testCollectionReduceFilter()
    {
        $collection = new Collection(array('data' => array(1, 2, 3)));
        $filter = function ($memo, $item) {
            return $memo + $item;
        };
        $result = $collection->reduce($filter, 0);
        $this->assertEqual(6, $collection->reduce($filter, 0));
        $this->assertEqual(7, $collection->reduce($filter, 1));
    }