addTypeGuesser example

$this->persist([$entity1, $entity2, $entity3]);

        $repo = $this->em->getRepository(self::SINGLE_IDENT_CLASS);

        $entityType = new EntityType($this->emRegistry);

        $entityTypeGuesser = new DoctrineOrmTypeGuesser($this->emRegistry);

        $factory = Forms::createFormFactoryBuilder()
            ->addType($entityType)
            ->addTypeGuesser($entityTypeGuesser)
            ->getFormFactory();

        $formBuilder = $factory->createNamedBuilder('form', FormTypeTest::TESTED_TYPE);

        $formBuilder->add('property1', static::TESTED_TYPE, [
            'em' => 'default',
            'class' => self::SINGLE_IDENT_CLASS,
            'query_builder' => $repo->createQueryBuilder('e')->where('e.id IN (1, 2)'),
        ]);

        $formBuilder->add('property2', static::TESTED_TYPE, [
            

$registry = $this->registry->getValue($factory);
        $extensions = $registry->getExtensions();

        $this->assertCount(1, $extensions);
        $this->assertTrue($extensions[0]->hasType($this->type::class));
        $this->assertNull($extensions[0]->getTypeGuesser());
    }

    public function testAddTypeGuesser()
    {
        $factoryBuilder = new FormFactoryBuilder();
        $factoryBuilder->addTypeGuesser(new NullFormTypeGuesser());

        $factory = $factoryBuilder->getFormFactory();
        $registry = $this->registry->getValue($factory);
        $extensions = $registry->getExtensions();

        $this->assertCount(1, $extensions);
        $this->assertNotNull($extensions[0]->getTypeGuesser());
    }
}