Properly respond with meta information added to `Context` instance

src/Endpoint/Concerns/BuildsMeta.php

@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of tobyz/json-api-server.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Tobyz\JsonApiServer\Endpoint\Concerns;
+
+use JsonApiPhp\JsonApi\Meta;
+use Tobyz\JsonApiServer\Context;
+
+trait BuildsMeta
+{
+    private function buildMeta(Context $context): array
+    {
+        $meta = [];
+
+        foreach ($context->getMeta() as $item) {
+            $meta[] = new Meta($item->getName(), $item->getValue()($context));
+        }
+
+        return $meta;
+    }
+}

src/Endpoint/Create.php

@@ -13,6 +13,8 @@ namespace Tobyz\JsonApiServer\Endpoint;
 
 use Psr\Http\Message\ResponseInterface;
 use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Endpoint\Concerns\BuildsMeta;
+use Tobyz\JsonApiServer\Endpoint\Concerns\SavesData;
 use Tobyz\JsonApiServer\Exception\ForbiddenException;
 use Tobyz\JsonApiServer\ResourceType;
 
@@ -23,7 +25,7 @@ use function Tobyz\JsonApiServer\set_value;
 
 class Create
 {
-    use Concerns\SavesData;
+    use SavesData;
 
     /**
      * @throws ForbiddenException if the resource is not creatable.

src/Endpoint/Delete.php

@@ -11,17 +11,23 @@
 
 namespace Tobyz\JsonApiServer\Endpoint;
 
+use JsonApiPhp\JsonApi\Meta;
+use JsonApiPhp\JsonApi\MetaDocument;
 use Nyholm\Psr7\Response;
 use Psr\Http\Message\ResponseInterface;
 use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Endpoint\Concerns\BuildsMeta;
 use Tobyz\JsonApiServer\Exception\ForbiddenException;
 use Tobyz\JsonApiServer\ResourceType;
 
 use function Tobyz\JsonApiServer\evaluate;
+use function Tobyz\JsonApiServer\json_api_response;
 use function Tobyz\JsonApiServer\run_callbacks;
 
 class Delete
 {
+    use BuildsMeta;
+
     /**
      * @throws ForbiddenException if the resource is not deletable.
      */
@@ -47,6 +53,12 @@ class Delete
 
         run_callbacks($schema->getListeners('deleted'), [&$model, $context]);
 
+        if (count($meta = $this->buildMeta($context))) {
+            return json_api_response(
+                new MetaDocument(...$meta)
+            );
+        }
+
         return new Response(204);
     }
 }

src/Endpoint/Index.php

@@ -18,6 +18,8 @@ use JsonApiPhp\JsonApi\Link\PrevLink;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface as Request;
 use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Endpoint\Concerns\BuildsMeta;
+use Tobyz\JsonApiServer\Endpoint\Concerns\IncludesData;
 use Tobyz\JsonApiServer\Exception\BadRequestException;
 use Tobyz\JsonApiServer\Exception\ForbiddenException;
 use Tobyz\JsonApiServer\ResourceType;
@@ -29,7 +31,8 @@ use function Tobyz\JsonApiServer\run_callbacks;
 
 class Index
 {
-    use Concerns\IncludesData;
+    use IncludesData;
+    use BuildsMeta;
 
     /**
      * Handle a request to show a resource listing.
@@ -99,9 +102,7 @@ class Index
             $meta[] = new Structure\Meta('total', $total);
         }
 
-        foreach ($context->getMeta() as $item) {
-            $meta[] = new Structure\Meta($item->getName(), $item->getValue()($context));
-        }
+        $meta = array_merge($meta, $this->buildMeta($context));
 
         return json_api_response(
             new Structure\CompoundDocument(

src/Endpoint/Show.php

@@ -15,6 +15,8 @@ use JsonApiPhp\JsonApi\CompoundDocument;
 use JsonApiPhp\JsonApi\Included;
 use Psr\Http\Message\ResponseInterface;
 use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Endpoint\Concerns\BuildsMeta;
+use Tobyz\JsonApiServer\Endpoint\Concerns\IncludesData;
 use Tobyz\JsonApiServer\ResourceType;
 use Tobyz\JsonApiServer\Serializer;
 
@@ -23,7 +25,8 @@ use function Tobyz\JsonApiServer\run_callbacks;
 
 class Show
 {
-    use Concerns\IncludesData;
+    use IncludesData;
+    use BuildsMeta;
 
     public function handle(Context $context, ResourceType $resourceType, $model): ResponseInterface
     {
@@ -39,7 +42,8 @@ class Show
         return json_api_response(
             new CompoundDocument(
                 $primary[0],
-                new Included(...$included)
+                new Included(...$included),
+                ...$this->buildMeta($context)
             )
         );
     }

src/Endpoint/Update.php

@@ -13,6 +13,8 @@ namespace Tobyz\JsonApiServer\Endpoint;
 
 use Psr\Http\Message\ResponseInterface;
 use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Endpoint\Concerns\BuildsMeta;
+use Tobyz\JsonApiServer\Endpoint\Concerns\SavesData;
 use Tobyz\JsonApiServer\Exception\ForbiddenException;
 use Tobyz\JsonApiServer\ResourceType;
 
@@ -21,7 +23,7 @@ use function Tobyz\JsonApiServer\run_callbacks;
 
 class Update
 {
-    use Concerns\SavesData;
+    use SavesData;
 
     /**
      * @throws ForbiddenException if the resource is not updatable.

tests/MockAdapter.php

@@ -36,6 +36,10 @@ class MockAdapter implements AdapterInterface
 
     public function find($query, string $id)
     {
+        if ($id === '404') {
+            return null;
+        }
+
         return $this->models[$id] ?? (object) ['id' => $id];
     }
 

tests/specification/DeletingResourcesTest.php

@@ -11,12 +11,15 @@
 
 namespace Tobyz\Tests\JsonApiServer\specification;
 
+use Tobyz\JsonApiServer\Context;
+use Tobyz\JsonApiServer\Exception\ResourceNotFoundException;
 use Tobyz\JsonApiServer\JsonApi;
+use Tobyz\JsonApiServer\Schema\Type;
 use Tobyz\Tests\JsonApiServer\AbstractTestCase;
 use Tobyz\Tests\JsonApiServer\MockAdapter;
 
 /**
- * @see https://jsonapi.org/format/1.0/#crud-deleting
+ * @see https://jsonapi.org/format/1.1/#crud-deleting
  */
 class DeletingResourcesTest extends AbstractTestCase
 {
@@ -25,25 +28,48 @@ class DeletingResourcesTest extends AbstractTestCase
      */
     private $api;
 
-    /**
-     * @var MockAdapter
-     */
-    private $adapter;
-
     public function setUp(): void
     {
         $this->api = new JsonApi('http://example.com');
 
-        $this->adapter = new MockAdapter();
+        $this->api->resourceType('users', new MockAdapter(), function (Type $type) {
+            $type->deletable();
+        });
     }
 
     public function test_no_content_response_if_resource_successfully_deleted()
     {
-        $this->markTestIncomplete();
+        $response = $this->api->handle(
+            $this->buildRequest('DELETE', '/users/1')
+        );
+
+        $this->assertEquals(204, $response->getStatusCode());
+        $this->assertEmpty($response->getBody()->getContents());
+    }
+
+    public function test_ok_response_if_meta()
+    {
+        $this->api->resourceType('users', new MockAdapter(), function (Type $type) {
+            $type->deletable();
+            $type->deleting(function ($model, Context $context) {
+                $context->meta('foo', 'bar');
+            });
+        });
+
+        $response = $this->api->handle(
+            $this->buildRequest('DELETE', '/users/1')
+        );
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertJsonApiDocumentSubset(['meta' => ['foo' => 'bar']], $response->getBody());
     }
 
     public function test_not_found_error_if_resource_does_not_exist()
     {
-        $this->markTestIncomplete();
+        $this->expectException(ResourceNotFoundException::class);
+
+        $this->api->handle(
+            $this->buildRequest('DELETE', '/users/404')
+        );
     }
 }