Ouzo\Utilities\Iterator\FluentIteratorTest::shouldMapItems PHP Method

    public function shouldMapItems()
    {
        //given
        $iterator = new \ArrayIterator(array(2, 3, 4, 5));
        //when
        $mappedIterator = FluentIterator::from($iterator)->map(function ($item) {
            return $item + 1;
        });
        //then
        $this->assertEquals(array(3, 4, 5, 6), $mappedIterator->toArray());
    }