Add a regression test for api-platform/api-platform#1085

Author: soyuka

features/jsonld/non_resource.feature

@@ -62,3 +62,32 @@ Feature: JSON-LD non-resource handling
       "id": 1
     }
     """
+
+  @!mongodb
+  @createSchema
+  Scenario: Create a resource that contains a stdClass object.
+    When I send a "POST" request to "/plain_object_dummies" with body:
+    """
+    {
+      "content":"{\"fields\":{\"title\":{\"value\":\"\"},\"images\":[{\"id\":0,\"categoryId\":0,\"uri\":\"/api/pictures\",\"resource\":\"{}\",\"description\":\"\",\"alt\":\"\",\"type\":\"picture\",\"text\":\"\",\"src\":\"\"}],\"alternativeAudio\":{},\"caption\":\"\"},\"showCaption\":false,\"alternativeContent\":false,\"alternativeAudioContent\":false,\"blockLayout\":\"default\"}"
+    }
+    """
+    Then the response status code should be 201
+    And the response should be in JSON
+    And the header "Content-Type" should be equal to "application/ld+json; charset=utf-8"
+    And the JSON should be equal to:
+    """
+    {
+      "@context": "/contexts/PlainObjectDummy",
+      "@id": "/plain_object_dummies/1",
+      "@type": "PlainObjectDummy",
+      "data": {
+        "fields": [],
+        "showCaption": false,
+        "alternativeContent": false,
+        "alternativeAudioContent": false,
+        "blockLayout": "default"
+      },
+      "id": 1
+    }
+    """

tests/Fixtures/TestBundle/Entity/PlainObjectDummy.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Core\Tests\Fixtures\TestBundle\Entity;
+
+use ApiPlatform\Core\Annotation\ApiResource;
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * Regression test for https://github.com/api-platform/api-platform/issues/1085.
+ *
+ * @author Antoine Bluchet <soyuka@gmail.com>
+ *
+ * @ApiResource
+ * @ORM\Entity
+ */
+class PlainObjectDummy
+{
+    /**
+     * @ORM\Id
+     * @ORM\Column(type="integer")
+     * @ORM\GeneratedValue(strategy="AUTO")
+     */
+    private $id;
+
+    /**
+     * @var string
+     */
+    private $content;
+
+    /**
+     * @var array
+     */
+    public $data;
+
+    public function setContent($content)
+    {
+        $this->content = $content;
+        $this->data = (array) json_decode($content);
+    }
+
+    public function getId()
+    {
+        return $this->id;
+    }
+}