ApiPlatform\Core\JsonLd\Serializer\ItemNormalizer::normalize PHP Method

    public function normalize($object, $format = null, array $context = [])
    {
        $resourceClass = $this->resourceClassResolver->getResourceClass($object, $context['resource_class'] ?? null, true);
        $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
        $data = $this->addJsonLdContext($this->contextBuilder, $resourceClass, $context);
        $rawData = parent::normalize($object, $format, $context);
        if (!is_array($rawData)) {
            return $rawData;
        }
        $data['@id'] = $this->iriConverter->getIriFromItem($object);
        $data['@type'] = $resourceMetadata->getIri() ?: $resourceMetadata->getShortName();
        return $data + $rawData;
    }

 public function testNormalize()
 {
     $dummy = new Dummy();
     $dummy->setName('hello');
     $resourceMetadataFactoryProphecy = $this->prophesize(ResourceMetadataFactoryInterface::class);
     $resourceMetadataFactoryProphecy->create(Dummy::class)->willReturn(new ResourceMetadata('Dummy'));
     $propertyNameCollection = new PropertyNameCollection(['name']);
     $propertyNameCollectionFactoryProphecy = $this->prophesize(PropertyNameCollectionFactoryInterface::class);
     $propertyNameCollectionFactoryProphecy->create(Dummy::class, [])->willReturn($propertyNameCollection)->shouldBeCalled();
     $propertyMetadataFactory = new PropertyMetadata(null, null, true);
     $propertyMetadataFactoryProphecy = $this->prophesize(PropertyMetadataFactoryInterface::class);
     $propertyMetadataFactoryProphecy->create(Dummy::class, 'name', [])->willReturn($propertyMetadataFactory)->shouldBeCalled();
     $iriConverterProphecy = $this->prophesize(IriConverterInterface::class);
     $iriConverterProphecy->getIriFromItem($dummy)->willReturn('/dummies/1988')->shouldBeCalled();
     $resourceClassResolverProphecy = $this->prophesize(ResourceClassResolverInterface::class);
     $resourceClassResolverProphecy->getResourceClass($dummy, null, true)->willReturn(Dummy::class)->shouldBeCalled();
     $serializerProphecy = $this->prophesize(SerializerInterface::class);
     $serializerProphecy->willImplement(NormalizerInterface::class);
     $serializerProphecy->normalize('hello', null, Argument::type('array'))->willReturn('hello')->shouldBeCalled();
     $contextBuilderProphecy = $this->prophesize(ContextBuilderInterface::class);
     $contextBuilderProphecy->getResourceContextUri(Dummy::class)->willReturn('/contexts/Dummy');
     $normalizer = new ItemNormalizer($resourceMetadataFactoryProphecy->reveal(), $propertyNameCollectionFactoryProphecy->reveal(), $propertyMetadataFactoryProphecy->reveal(), $iriConverterProphecy->reveal(), $resourceClassResolverProphecy->reveal(), $contextBuilderProphecy->reveal());
     $normalizer->setSerializer($serializerProphecy->reveal());
     $expected = ['@context' => '/contexts/Dummy', '@id' => '/dummies/1988', '@type' => 'Dummy', 'name' => 'hello'];
     $this->assertEquals($expected, $normalizer->normalize($dummy));
 }