--- /dev/null
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\ContactForm;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+
+/**
+ * @group rest
+ */
+class ContactFormJsonCookieTest extends ContactFormResourceTestBase {
+
+ use CookieResourceTestTrait;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected static $format = 'json';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected static $mimeType = 'application/json';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected static $auth = 'cookie';
+
+}