+<?php
+
+namespace Drupal\Tests\hal\Kernel;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Url;
+use Drupal\entity_test\Entity\EntityTest;
+
+/**
+ * Tests HAL normalization edge cases for EntityResource.
+ *
+ * @group hal
+ */
+class NormalizeTest extends NormalizerTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ \Drupal::service('router.builder')->rebuild();
+ }
+
+ /**
+ * Tests the normalize function.
+ */
+ public function testNormalize() {
+ $target_entity_de = EntityTest::create((['langcode' => 'de', 'field_test_entity_reference' => NULL]));
+ $target_entity_de->save();
+ $target_entity_en = EntityTest::create((['langcode' => 'en', 'field_test_entity_reference' => NULL]));
+ $target_entity_en->save();
+
+ // Create a German entity.
+ $values = [
+ 'langcode' => 'de',
+ 'name' => $this->randomMachineName(),
+ 'field_test_text' => [
+ 'value' => $this->randomMachineName(),
+ 'format' => 'full_html',
+ ],
+ 'field_test_entity_reference' => [
+ 'target_id' => $target_entity_de->id(),
+ ],
+ ];
+ // Array of translated values.
+ $translation_values = [
+ 'name' => $this->randomMachineName(),
+ 'field_test_entity_reference' => [
+ 'target_id' => $target_entity_en->id(),
+ ]
+ ];
+
+ $entity = EntityTest::create($values);
+ $entity->save();
+ // Add an English value for name and entity reference properties.
+ $entity->addTranslation('en')->set('name', [0 => ['value' => $translation_values['name']]]);
+ $entity->getTranslation('en')->set('field_test_entity_reference', [0 => $translation_values['field_test_entity_reference']]);
+ $entity->save();
+
+ $type_uri = Url::fromUri('base:rest/type/entity_test/entity_test', ['absolute' => TRUE])->toString();
+ $relation_uri = Url::fromUri('base:rest/relation/entity_test/entity_test/field_test_entity_reference', ['absolute' => TRUE])->toString();
+
+ $expected_array = [
+ '_links' => [
+ 'curies' => [
+ [
+ 'href' => '/relations',
+ 'name' => 'site',
+ 'templated' => TRUE,
+ ],
+ ],
+ 'self' => [
+ 'href' => $this->getEntityUri($entity),
+ ],
+ 'type' => [
+ 'href' => $type_uri,
+ ],
+ $relation_uri => [
+ [
+ 'href' => $this->getEntityUri($target_entity_de),
+ 'lang' => 'de',
+ ],
+ [
+ 'href' => $this->getEntityUri($target_entity_en),
+ 'lang' => 'en',
+ ],
+ ],
+ ],
+ '_embedded' => [
+ $relation_uri => [
+ [
+ '_links' => [
+ 'self' => [
+ 'href' => $this->getEntityUri($target_entity_de),
+ ],
+ 'type' => [
+ 'href' => $type_uri,
+ ],
+ ],
+ 'uuid' => [
+ [
+ 'value' => $target_entity_de->uuid(),
+ ],
+ ],
+ 'lang' => 'de',
+ ],
+ [
+ '_links' => [
+ 'self' => [
+ 'href' => $this->getEntityUri($target_entity_en),
+ ],
+ 'type' => [
+ 'href' => $type_uri,
+ ],
+ ],
+ 'uuid' => [
+ [
+ 'value' => $target_entity_en->uuid(),
+ ],
+ ],
+ 'lang' => 'en',
+ ],
+ ],
+ ],
+ 'id' => [
+ [
+ 'value' => $entity->id(),
+ ],
+ ],
+ 'uuid' => [
+ [
+ 'value' => $entity->uuid(),
+ ],
+ ],
+ 'langcode' => [
+ [
+ 'value' => 'de',
+ ],
+ ],
+ 'name' => [
+ [
+ 'value' => $values['name'],
+ 'lang' => 'de',
+ ],
+ [
+ 'value' => $translation_values['name'],
+ 'lang' => 'en',
+ ],
+ ],
+ 'field_test_text' => [
+ [
+ 'value' => $values['field_test_text']['value'],
+ 'format' => $values['field_test_text']['format'],
+ ],
+ ],
+ ];
+
+ $normalized = $this->serializer->normalize($entity, $this->format);
+ $this->assertEqual($normalized['_links']['self'], $expected_array['_links']['self'], 'self link placed correctly.');
+ // @todo Test curies.
+ // @todo Test type.
+ $this->assertEqual($normalized['id'], $expected_array['id'], 'Internal id is exposed.');
+ $this->assertEqual($normalized['uuid'], $expected_array['uuid'], 'Non-translatable fields is normalized.');
+ $this->assertEqual($normalized['name'], $expected_array['name'], 'Translatable field with multiple language values is normalized.');
+ $this->assertEqual($normalized['field_test_text'], $expected_array['field_test_text'], 'Field with properties is normalized.');
+ $this->assertEqual($normalized['_embedded'][$relation_uri], $expected_array['_embedded'][$relation_uri], 'Entity reference field is normalized.');
+ $this->assertEqual($normalized['_links'][$relation_uri], $expected_array['_links'][$relation_uri], 'Links are added for entity reference field.');
+ }
+
+ /**
+ * Constructs the entity URI.
+ *
+ * @param \Drupal\Core\Entity\EntityInterface $entity
+ * The entity.
+ *
+ * @return string
+ * The entity URI.
+ */
+ protected function getEntityUri(EntityInterface $entity) {
+ $url = $entity->urlInfo('canonical', ['absolute' => TRUE]);
+ return $url->setRouteParameter('_format', 'hal_json')->toString();
+ }
+
+}