ValidatorTypeGuesser example

/* @var $metadata ClassMetadata */
        $metadata->addConstraint(new Form());
        $metadata->addConstraint(new Traverse(false));

        $this->validator = $validator;
        $this->formRenderer = $formRenderer;
        $this->translator = $translator;
    }

    public function loadTypeGuesser(): ?FormTypeGuesserInterface
    {
        return new ValidatorTypeGuesser($this->validator);
    }

    protected function loadTypeExtensions(): array
    {
        return [
            new Type\FormTypeValidatorExtension($this->validator, $this->legacyErrorMessages, $this->formRenderer, $this->translator),
            new Type\RepeatedTypeValidatorExtension(),
            new Type\SubmitTypeValidatorExtension(),
        ];
    }
}

/** * @var MetadataFactoryInterface */
    private \Symfony\Component\Validator\Tests\Fixtures\FakeMetadataFactory $metadataFactory;

    protected function setUp(): void
    {
        $this->metadata = new ClassMetadata(self::TEST_CLASS);
        $this->metadataFactory = new FakeMetadataFactory();
        $this->metadataFactory->addMetadata($this->metadata);
        $this->guesser = new ValidatorTypeGuesser($this->metadataFactory);
    }

    /** * @dataProvider guessTypeProvider */
    public function testGuessType(Constraint $constraint, TypeGuess $guess)
    {
        $this->metadata->addPropertyConstraint(self::TEST_PROPERTY, $constraint);

        $this->assertEquals($guess, $this->guesser->guessType(self::TEST_CLASS, self::TEST_PROPERTY));
    }