TestLoader example

use Symfony\Component\Validator\Tests\Fixtures\PropertyGetter;
use Symfony\Component\Validator\Tests\Fixtures\PropertyGetterInterface;

class LazyLoadingMetadataFactoryTest extends TestCase
{
    private const CLASS_NAME = Entity::class;
    private const PARENT_CLASS = EntityParent::class;
    private const INTERFACE_A_CLASS = 'Symfony\Component\Validator\Tests\Fixtures\EntityInterfaceA';

    public function testLoadClassMetadataWithInterface()
    {
        $factory = new LazyLoadingMetadataFactory(new TestLoader());
        $metadata = $factory->getMetadataFor(self::PARENT_CLASS);

        $constraints = [
            new ConstraintA(['groups' => ['Default', 'EntityParent']]),
            new ConstraintA(['groups' => ['Default', 'EntityInterfaceA', 'EntityParent']]),
        ];

        $this->assertEquals($constraints, $metadata->getConstraints());
    }

    public function testMergeParentConstraints()
    {