--- /dev/null
+<?php
+
+namespace Drupal\Tests\aggregator\Functional\Rest;
+
+use Drupal\aggregator\Entity\Feed;
+use Drupal\aggregator\Entity\Item;
+use Drupal\Tests\rest\Functional\BcTimestampNormalizerUnixTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\EntityResourceTestBase;
+
+/**
+ * ResourceTestBase for Item entity.
+ */
+abstract class ItemResourceTestBase extends EntityResourceTestBase {
+
+ use BcTimestampNormalizerUnixTestTrait;
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['aggregator'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected static $entityTypeId = 'aggregator_item';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected static $patchProtectedFieldNames = [];
+
+ /**
+ * The Item entity.
+ *
+ * @var \Drupal\aggregator\ItemInterface
+ */
+ protected $entity;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUpAuthorization($method) {
+ switch ($method) {
+ case 'GET':
+ $this->grantPermissionsToTestedRole(['access news feeds']);
+ break;
+
+ case 'POST':
+ case 'PATCH':
+ case 'DELETE':
+ $this->grantPermissionsToTestedRole(['administer news feeds']);
+ break;
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function createEntity() {
+ // Create a "Camelids" feed.
+ $feed = Feed::create([
+ 'title' => 'Camelids',
+ 'url' => 'https://groups.drupal.org/not_used/167169',
+ 'refresh' => 900,
+ 'checked' => 1389919932,
+ 'description' => 'Drupal Core Group feed',
+ ]);
+ $feed->save();
+
+ // Create a "Llama" item.
+ $item = Item::create();
+ $item->setTitle('Llama')
+ ->setFeedId($feed->id())
+ ->setLink('https://www.drupal.org/')
+ ->setPostedTime(123456789)
+ ->save();
+
+ return $item;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function createAnotherEntity() {
+ $entity = $this->entity->createDuplicate();
+ $entity->setLink('https://www.example.org/');
+ $label_key = $entity->getEntityType()->getKey('label');
+ if ($label_key) {
+ $entity->set($label_key, $entity->label() . '_dupe');
+ }
+ $entity->save();
+ return $entity;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getExpectedNormalizedEntity() {
+ $feed = Feed::load($this->entity->getFeedId());
+
+ return [
+ 'iid' => [
+ [
+ 'value' => 1,
+ ],
+ ],
+ 'langcode' => [
+ [
+ 'value' => 'en',
+ ],
+ ],
+ 'fid' => [
+ [
+ 'target_id' => 1,
+ 'target_type' => 'aggregator_feed',
+ 'target_uuid' => $feed->uuid(),
+ 'url' => base_path() . 'aggregator/sources/1',
+ ],
+ ],
+ 'title' => [
+ [
+ 'value' => 'Llama',
+ ],
+ ],
+ 'link' => [
+ [
+ 'value' => 'https://www.drupal.org/',
+ ],
+ ],
+ 'author' => [],
+ 'description' => [],
+ 'timestamp' => [
+ $this->formatExpectedTimestampItemValues(123456789),
+ ],
+ 'guid' => [],
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getNormalizedPostEntity() {
+ return [
+ 'fid' => [
+ [
+ 'target_id' => 1,
+ ],
+ ],
+ 'title' => [
+ [
+ 'value' => 'Llama',
+ ],
+ ],
+ 'link' => [
+ [
+ 'value' => 'https://www.drupal.org/',
+ ],
+ ],
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getExpectedCacheContexts() {
+ // @see ::createEntity()
+ return ['user.permissions'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getExpectedUnauthorizedAccessMessage($method) {
+ if ($this->config('rest.settings')->get('bc_entity_resource_permissions')) {
+ return parent::getExpectedUnauthorizedAccessMessage($method);
+ }
+
+ switch ($method) {
+ case 'GET':
+ return "The 'access news feeds' permission is required.";
+
+ case 'POST':
+ case 'PATCH':
+ case 'DELETE':
+ return "The 'administer news feeds' permission is required.";
+
+ default:
+ return parent::getExpectedUnauthorizedAccessMessage($method);
+ }
+ }
+
+}