DusanKasan / Knapsack

        $this->getOrDefault(5, 'not found')->shouldReturn('not found');

    }

    function it_can_get_nth_item()

    {

        $this->beConstructedWith([1, [2], 3]);

        $this->getNth(0)->shouldReturn(1);

        $this->getNth(1, true)->first()->shouldReturn(2);

        $this->getNth(1)->shouldReturn([2]);

    }

    function it_can_find()

    {

            ->shouldReturn([1 => 1, 3 => 2, 2 => 1]);

    }

    function it_can_get_first_item()

    {

        $this->beConstructedWith([1, [2], 3]);

        $this->first()->shouldReturn(1);

        $this->drop(1)->first()->shouldReturn([2]);

        $this->drop(1)->first(true)->toArray()->shouldReturn([2]);

    }

    function it_will_throw_when_trying_to_get_first_item_of_empty_collection()

    {

        $this->shouldThrow(ItemNotFound::class)->during('first');

    }

    function it_can_get_last_item()

    {

        $this->beConstructedWith([1, [2], 3]);

        $this->last()->shouldReturn(3);

        $this->take(2)->last()->shouldReturn([2]);

        $this->take(2)->last(true)->toArray()->shouldReturn([2]);

    }

    function it_will_throw_when_trying_to_get_last_item_of_empty_collection()

    {