class NodeResourceTestBase

abstract class NodeResourceTestBase extends EntityResourceTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'path',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected static $entityTypeId = 'node';
    
    /**
     * {@inheritdoc}
     */
    protected static $patchProtectedFieldNames = [
        'revision_timestamp' => NULL,
        'revision_uid' => NULL,
        'created' => "The 'administer nodes' permission is required.",
        'changed' => NULL,
        'promote' => "The 'administer nodes' permission is required.",
        'sticky' => "The 'administer nodes' permission is required.",
        'path' => "The following permissions are required: 'create url aliases' OR 'administer url aliases'.",
    ];
    
    /**
     * @var \Drupal\node\NodeInterface
     */
    protected $entity;
    
    /**
     * {@inheritdoc}
     */
    protected function setUpAuthorization($method) {
        switch ($method) {
            case 'GET':
                $this->grantPermissionsToTestedRole([
                    'access content',
                ]);
                break;
            case 'POST':
                $this->grantPermissionsToTestedRole([
                    'access content',
                    'create camelids content',
                ]);
                break;
            case 'PATCH':
                // Do not grant the 'create url aliases' permission to test the case
                // when the path field is protected/not accessible, see
                // \Drupal\Tests\rest\Functional\EntityResource\Term\TermResourceTestBase
                // for a positive test.
                $this->grantPermissionsToTestedRole([
                    'access content',
                    'edit any camelids content',
                ]);
                break;
            case 'DELETE':
                $this->grantPermissionsToTestedRole([
                    'access content',
                    'delete any camelids content',
                ]);
                break;
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function createEntity() {
        if (!NodeType::load('camelids')) {
            // Create a "Camelids" node type.
            NodeType::create([
                'name' => 'Camelids',
                'type' => 'camelids',
            ])->save();
        }
        // Create a "Llama" node.
        $node = Node::create([
            'type' => 'camelids',
        ]);
        $node->setTitle('Llama')
            ->setOwnerId(static::$auth ? $this->account
            ->id() : 0)
            ->setPublished()
            ->setCreatedTime(123456789)
            ->setChangedTime(123456789)
            ->setRevisionCreationTime(123456789)
            ->set('path', '/llama')
            ->save();
        return $node;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getExpectedNormalizedEntity() {
        $author = User::load($this->entity
            ->getOwnerId());
        return [
            'nid' => [
                [
                    'value' => 1,
                ],
            ],
            'uuid' => [
                [
                    'value' => $this->entity
                        ->uuid(),
                ],
            ],
            'vid' => [
                [
                    'value' => 1,
                ],
            ],
            'langcode' => [
                [
                    'value' => 'en',
                ],
            ],
            'type' => [
                [
                    'target_id' => 'camelids',
                    'target_type' => 'node_type',
                    'target_uuid' => NodeType::load('camelids')->uuid(),
                ],
            ],
            'title' => [
                [
                    'value' => 'Llama',
                ],
            ],
            'status' => [
                [
                    'value' => TRUE,
                ],
            ],
            'created' => [
                [
                    'value' => (new \DateTime())->setTimestamp(123456789)
                        ->setTimezone(new \DateTimeZone('UTC'))
                        ->format(\DateTime::RFC3339),
                    'format' => \DateTime::RFC3339,
                ],
            ],
            'changed' => [
                [
                    'value' => (new \DateTime())->setTimestamp($this->entity
                        ->getChangedTime())
                        ->setTimezone(new \DateTimeZone('UTC'))
                        ->format(\DateTime::RFC3339),
                    'format' => \DateTime::RFC3339,
                ],
            ],
            'promote' => [
                [
                    'value' => TRUE,
                ],
            ],
            'sticky' => [
                [
                    'value' => FALSE,
                ],
            ],
            'revision_timestamp' => [
                [
                    'value' => (new \DateTime())->setTimestamp(123456789)
                        ->setTimezone(new \DateTimeZone('UTC'))
                        ->format(\DateTime::RFC3339),
                    'format' => \DateTime::RFC3339,
                ],
            ],
            'revision_translation_affected' => [
                [
                    'value' => TRUE,
                ],
            ],
            'default_langcode' => [
                [
                    'value' => TRUE,
                ],
            ],
            'uid' => [
                [
                    'target_id' => (int) $author->id(),
                    'target_type' => 'user',
                    'target_uuid' => $author->uuid(),
                    'url' => base_path() . 'user/' . $author->id(),
                ],
            ],
            'revision_uid' => [
                [
                    'target_id' => (int) $author->id(),
                    'target_type' => 'user',
                    'target_uuid' => $author->uuid(),
                    'url' => base_path() . 'user/' . $author->id(),
                ],
            ],
            'revision_log' => [],
            'path' => [
                [
                    'alias' => '/llama',
                    'pid' => 1,
                    'langcode' => 'en',
                ],
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getNormalizedPostEntity() {
        return [
            'type' => [
                [
                    'target_id' => 'camelids',
                ],
            ],
            'title' => [
                [
                    'value' => 'Dramallama',
                ],
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getExpectedUnauthorizedAccessMessage($method) {
        if ($method === 'GET' || $method == 'PATCH' || $method == 'DELETE' || $method == 'POST') {
            return "The 'access content' permission is required.";
        }
        return parent::getExpectedUnauthorizedAccessMessage($method);
    }
    
    /**
     * Tests PATCHing a node's path with and without 'create url aliases'.
     *
     * For a positive test, see the similar test coverage for Term.
     *
     * @see \Drupal\Tests\rest\Functional\EntityResource\Term\TermResourceTestBase::testPatchPath()
     */
    public function testPatchPath() {
        $this->initAuthentication();
        $this->provisionEntityResource();
        $this->setUpAuthorization('GET');
        $this->setUpAuthorization('PATCH');
        $url = $this->getEntityResourceUrl()
            ->setOption('query', [
            '_format' => static::$format,
        ]);
        // GET node's current normalization.
        $response = $this->request('GET', $url, $this->getAuthenticationRequestOptions('GET'));
        $normalization = $this->serializer
            ->decode((string) $response->getBody(), static::$format);
        // Change node's path alias.
        $normalization['path'][0]['alias'] .= 's-rule-the-world';
        // Create node PATCH request.
        $request_options = [];
        $request_options[RequestOptions::HEADERS]['Content-Type'] = static::$mimeType;
        $request_options = array_merge_recursive($request_options, $this->getAuthenticationRequestOptions('PATCH'));
        $request_options[RequestOptions::BODY] = $this->serializer
            ->encode($normalization, static::$format);
        // PATCH request: 403 when creating URL aliases unauthorized. Before
        // asserting the 403 response, assert that the stored path alias remains
        // unchanged.
        $response = $this->request('PATCH', $url, $request_options);
        $this->assertSame('/llama', $this->entityStorage
            ->loadUnchanged($this->entity
            ->id())
            ->get('path')->alias);
        $this->assertResourceErrorResponse(403, "Access denied on updating field 'path'. " . static::$patchProtectedFieldNames['path'], $response);
        // Grant permission to create URL aliases.
        $this->grantPermissionsToTestedRole([
            'create url aliases',
        ]);
        // Repeat PATCH request: 200.
        $response = $this->request('PATCH', $url, $request_options);
        $this->assertResourceResponse(200, FALSE, $response);
        $updated_normalization = $this->serializer
            ->decode((string) $response->getBody(), static::$format);
        $this->assertSame($normalization['path'], $updated_normalization['path']);
    }

}