ArrayToPartsTransformer example

if (null !== $options['date_format']) {
                $dateOptions['format'] = $options['date_format'];
            }

            $dateOptions['input'] = $timeOptions['input'] = 'array';
            $dateOptions['error_bubbling'] = $timeOptions['error_bubbling'] = true;

            $builder
                ->addViewTransformer(new DataTransformerChain([
                    new DateTimeToArrayTransformer($options['model_timezone'], $options['view_timezone'], $parts),
                    new ArrayToPartsTransformer([
                        'date' => $dateParts,
                        'time' => $timeParts,
                    ]),
                ]))
                ->add('date', DateType::class, $dateOptions)
                ->add('time', TimeType::class, $timeOptions)
            ;
        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        }

use PHPUnit\Framework\TestCase;
use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\Extension\Core\DataTransformer\ArrayToPartsTransformer;

class ArrayToPartsTransformerTest extends TestCase
{
    private ArrayToPartsTransformer $transformer;

    protected function setUp(): void
    {
        $this->transformer = new ArrayToPartsTransformer([
            'first' => ['a', 'b', 'c'],
            'second' => ['d', 'e', 'f'],
        ]);
    }

    public function testTransform()
    {
        $input = [
            'a' => '1',
            'b' => '2',
            'c' => '3',