diff --git a/core/modules/hal/tests/src/Functional/EntityResource/Node/NodeHalJsonCookieTranslationsTest.php b/core/modules/hal/tests/src/Functional/EntityResource/Node/NodeHalJsonCookieTranslationsTest.php
index 838b3ed..1a107ce 100644
--- a/core/modules/hal/tests/src/Functional/EntityResource/Node/NodeHalJsonCookieTranslationsTest.php
+++ b/core/modules/hal/tests/src/Functional/EntityResource/Node/NodeHalJsonCookieTranslationsTest.php
@@ -2,9 +2,11 @@
 
 namespace Drupal\Tests\hal\Functional\EntityResource\Node;
 
+use Drupal\Component\Utility\NestedArray;
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\Tests\hal\Functional\EntityResource\HalEntityNormalizationTrait;
 use Drupal\user\Entity\User;
+use GuzzleHttp\RequestOptions;
 
 /**
  * @group hal
@@ -119,4 +121,35 @@ protected function getExpectedNormalizedEntity() {
     return $normalization;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function testPost() {
+    parent::testPost();
+
+    // Create an entity with a translation.
+    $entity_body_with_a_translations = $this->serializer->encode($this->getExpectedNormalizedEntity(), static::$format);
+
+    $request_options = [];
+    $request_options[RequestOptions::HEADERS]['Content-Type'] = static::$mimeType;
+    $request_options[RequestOptions::BODY] = $entity_body_with_a_translations;
+    $request_options = NestedArray::mergeDeep($request_options, $this->getAuthenticationRequestOptions('POST'));
+
+    $url = $this->getPostUrl();
+    $url->setOption('query', ['_format' => static::$format]);
+
+    // 201 for well-formed request.
+    $response = $this->request('POST', $url, $request_options);
+    $this->assertResourceResponse(201, FALSE, $response);
+    /** @var \Drupal\node\NodeInterface $created_node */
+    $created_node = $this->serializer->denormalize((string) $response->getBody(), static::$format);
+    $this->assertSame([$created_node->toUrl('canonical')->setAbsolute(TRUE)->toString()], $response->getHeader('Location'));
+    $this->assertFalse($response->hasHeader('X-Drupal-Cache'));
+
+    $this->assertSame('Llama', $created_node->getTitle());
+    $this->assertSame('Lama', $created_node->getTranslation('de')->getTitle());
+
+
+  }
+
 }