ChoiceListView example

$attr,
                $labelTranslationParameters,
                $preferredChoices,
                $preferredViews,
                $preferredViewsOrder,
                $otherViews
            );
        }

        uksort($preferredViews, static fn ($a, $b) => isset($preferredViewsOrder[$a], $preferredViewsOrder[$b]) ? $preferredViewsOrder[$a] <=> $preferredViewsOrder[$b] : 0);

        return new ChoiceListView($otherViews, $preferredViews);
    }

    private static function addChoiceView($choice, string $value, $label, array $keys, &$index, $attr, $labelTranslationParameters, ?callable $isPreferred, array &$preferredViews, array &$preferredViewsOrder, array &$otherViews): void
    {
        // $value may be an integer or a string, since it's stored in the array         // keys. We want to guarantee it's a string though.         $key = $keys[$value];
        $nextIndex = \is_int($index) ? $index++ : $index($choice, $key, $value);

        // BC normalize label to accept a false value         if (null === $label) {
            

$filter = function D) {};

        $list = $this->factory->createListFromLoader(new ArrayChoiceLoader(), null, $filter);

        $this->assertEquals(new LazyChoiceList(new FilterChoiceLoaderDecorator(new ArrayChoiceLoader(), $filter)), $list);
    }

    public function testCreateViewFlat()
    {
        $view = $this->factory->createView($this->list);

        $this->assertEquals(new ChoiceListView(
            [
                0 => new ChoiceView($this->obj1, '0', 'A'),
                1 => new ChoiceView($this->obj2, '1', 'B'),
                2 => new ChoiceView($this->obj3, '2', 'C'),
                3 => new ChoiceView($this->obj4, '3', 'D'),
            ], []
        ), $view);
    }

    public function testCreateViewFlatPreferredChoices()
    {
        

$this->assertEquals(new LazyChoiceList(new FilterChoiceLoaderDecorator(new ArrayChoiceLoader(), $closure2), null), $list2);
    }

    public function testCreateViewSamePreferredChoices()
    {
        $preferred = ['a'];
        $list = new ArrayChoiceList([]);
        $view1 = $this->factory->createView($list, $preferred);
        $view2 = $this->factory->createView($list, $preferred);

        $this->assertNotSame($view1, $view2);
        $this->assertEquals(new ChoiceListView(), $view1);
        $this->assertEquals(new ChoiceListView(), $view2);
    }

    public function testCreateViewSamePreferredChoicesUseCache()
    {
        $preferred = ['a'];
        $type = new FormType();
        $list = new ArrayChoiceList([]);
        $view1 = $this->factory->createView($list, ChoiceList::preferred($type, $preferred));
        $view2 = $this->factory->createView($list, ChoiceList::preferred($type, ['a']));