FormErrorNormalizer example

use Symfony\Component\Form\FormErrorIterator;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Serializer\Normalizer\FormErrorNormalizer;

class FormErrorNormalizerTest extends TestCase
{
    private FormErrorNormalizer $normalizer;
    private FormInterface $form;

    protected function setUp(): void
    {
        $this->normalizer = new FormErrorNormalizer();

        $this->form = $this->createMock(FormInterface::class);
        $this->form->method('isSubmitted')->willReturn(true);
        $this->form->method('all')->willReturn([]);

        $this->form->method('getErrors')
            ->willReturn(new FormErrorIterator($this->form, [
                new FormError('a', 'b', ['c', 'd'], 5, 'f'),
                new FormError(1, 2, [3, 4], 5, 6),
            ])
            );
    }