diff --git a/core/modules/hal/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentHalJsonAnonTest.php b/core/modules/hal/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentHalJsonAnonTest.php
index 02d7446..5abe6c4 100644
--- a/core/modules/hal/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentHalJsonAnonTest.php
+++ b/core/modules/hal/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentHalJsonAnonTest.php
@@ -3,6 +3,7 @@
 namespace Drupal\Tests\hal\Functional\EntityResource\MenuLinkContent;
 
 use Drupal\Core\Cache\Cache;
+use Drupal\Tests\hal\Functional\EntityResource\HalEntityNormalizationTrait;
 use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
 use Drupal\Tests\rest\Functional\EntityResource\MenuLinkContent\MenuLinkContentResourceTestBase;
 
@@ -13,6 +14,7 @@
  */
 class MenuLinkContentHalJsonAnonTest extends MenuLinkContentResourceTestBase {
 
+  use HalEntityNormalizationTrait;
   use AnonResourceTestTrait;
 
   /**
@@ -33,7 +35,35 @@ class MenuLinkContentHalJsonAnonTest extends MenuLinkContentResourceTestBase {
   /**
    * {@inheritdoc}
    */
-  protected static $expectedErrorMimeType = 'application/json';
+  protected function getExpectedNormalizedEntity() {
+    $default_normalization = parent::getExpectedNormalizedEntity();
+
+    $normalization = $this->applyHalFieldNormalization($default_normalization);
+
+    return $normalization + [
+      '_links' => [
+        'self' => [
+          'href' => $this->baseUrl . '/admin/structure/menu/item/1/edit?_format=hal_json',
+        ],
+        'type' => [
+          'href' => $this->baseUrl . '/rest/type/menu_link_content/menu_link_content',
+        ],
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getNormalizedPostEntity() {
+    return parent::getNormalizedPostEntity() + [
+      '_links' => [
+        'type' => [
+          'href' => $this->baseUrl . '/rest/type/menu_link_content/menu_link_content',
+        ],
+      ],
+    ];
+  }
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
index e9d9c48..e904728 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
@@ -561,7 +561,7 @@ public function testPost() {
     // DX: 422 when invalid entity: multiple values sent for single-value field.
     $response = $this->request('POST', $url, $request_options);
     $label_field = $this->entity->getEntityType()->hasKey('label') ? $this->entity->getEntityType()->getKey('label') : static::$labelFieldName;
-    $label_field_capitalized = ucfirst($label_field);
+    $label_field_capitalized = $this->entity->getFieldDefinition($label_field)->getLabel();
     $this->assertResourceErrorResponse(422, "Unprocessable Entity: validation failed.\n$label_field: $label_field_capitalized: this field cannot hold more than 1 values.\n", $response);
 
 
@@ -751,7 +751,7 @@ public function testPatch() {
     // DX: 422 when invalid entity: multiple values sent for single-value field.
     $response = $this->request('PATCH', $url, $request_options);
     $label_field = $this->entity->getEntityType()->hasKey('label') ? $this->entity->getEntityType()->getKey('label') : static::$labelFieldName;
-    $label_field_capitalized = ucfirst($label_field);
+    $label_field_capitalized = $this->entity->getFieldDefinition($label_field)->getLabel();
     $this->assertResourceErrorResponse(422, "Unprocessable Entity: validation failed.\n$label_field: $label_field_capitalized: this field cannot hold more than 1 values.\n", $response);
 
 
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentResourceTestBase.php
index 77c093b..825e556 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/MenuLinkContent/MenuLinkContentResourceTestBase.php
@@ -23,7 +23,9 @@
   /**
    * {@inheritdoc}
    */
-  protected static $patchProtectedFieldNames = [];
+  protected static $patchProtectedFieldNames = [
+    'changed'
+  ];
 
   /**
    * The MenuLinkContent entity.
@@ -66,96 +68,16 @@ protected function createEntity() {
   /**
    * {@inheritdoc}
    */
-  protected function getExpectedNormalizedEntity() {
+  protected function getNormalizedPostEntity() {
     return [
-      'uuid' => [
-        [
-          'value' => $this->entity->uuid(),
-        ],
-      ],
-      'id' => [
-        [
-          'value' => '1',
-        ],
-      ],
       'title' => [
         [
-          'value' => 'Llama Gabilondo',
-          'lang' => 'en',
+          'value' => 'Dramallama',
         ],
       ],
       'link' => [
         [
-          'uri' => 'https://nl.wikipedia.org/wiki/Llama',
-          'title' => NULL,
-          'options' => [],
-        ],
-      ],
-      'weight' => [
-        [
-          'value' => 0,
-        ],
-      ],
-      'menu_name' => [
-        [
-          'value' => 'main',
-        ],
-      ],
-      'langcode' => [
-        [
-          'value' => 'en',
-          'lang' => 'en',
-        ],
-      ],
-      '_links' => [
-        'self' => [
-          'href' => $this->baseUrl . '/admin/structure/menu/item/1/edit?_format=hal_json',
-        ],
-        'type' => [
-          'href' => $this->baseUrl . '/rest/type/menu_link_content/menu_link_content',
-        ],
-      ],
-      'bundle' => [
-        [
-          'value' => 'menu_link_content',
-        ],
-      ],
-      'description' => [
-        [
-          'value' => 'Llama Gabilondo',
-          'lang' => 'en',
-        ],
-      ],
-      'external' => [
-        [
-          'value' => '0',
-        ],
-      ],
-      'rediscover' => [
-        [
-          'value' => '0',
-        ],
-      ],
-      'expanded' => [
-        [
-          'value' => '0',
-        ],
-      ],
-      'enabled' => [
-        [
-          'value' => TRUE,
-        ],
-      ],
-      'changed' => [
-        [
-          'value' => $this->entity->getChangedTime(),
-          'lang' => 'en',
-        ],
-      ],
-      'default_langcode' => [
-        [
-          'value' => '1',
-          'lang' => 'en',
+          'uri' => 'http://www.urbandictionary.com/define.php?term=drama%20llama',
         ],
       ],
     ];
@@ -164,19 +86,88 @@ protected function getExpectedNormalizedEntity() {
   /**
    * {@inheritdoc}
    */
-  protected function getNormalizedPostEntity() {
+  protected function getExpectedNormalizedEntity() {
     return [
-      'name' => [
-        [
-          'title' => 'Dramallama',
-        ],
-      ],
-      'link' => [
-        [
-          'uri' => 'http://www.urbandictionary.com/define.php?term=drama%20llama',
-        ],
-      ],
-    ];
+       'uuid' => [
+         [
+           'value' => $this->entity->uuid(),
+         ],
+       ],
+       'id' => [
+         [
+           'value' => '1',
+         ],
+       ],
+       'title' => [
+         [
+           'value' => 'Llama Gabilondo',
+         ],
+       ],
+       'link' => [
+         [
+           'uri' => 'https://nl.wikipedia.org/wiki/Llama',
+           'title' => NULL,
+           'options' => [],
+         ],
+       ],
+       'weight' => [
+         [
+           'value' => 0,
+         ],
+       ],
+       'menu_name' => [
+         [
+           'value' => 'main',
+         ],
+       ],
+       'langcode' => [
+         [
+           'value' => 'en',
+         ],
+       ],
+       'bundle' => [
+         [
+           'value' => 'menu_link_content',
+         ],
+       ],
+       'description' => [
+         [
+           'value' => 'Llama Gabilondo',
+         ],
+       ],
+       'external' => [
+         [
+           'value' => '0',
+         ],
+       ],
+       'rediscover' => [
+         [
+           'value' => '0',
+         ],
+       ],
+       'expanded' => [
+         [
+           'value' => '0',
+         ],
+       ],
+       'enabled' => [
+         [
+           'value' => TRUE,
+         ],
+       ],
+       'changed' => [
+         [
+           'value' => $this->entity->getChangedTime(),
+         ],
+       ],
+       'default_langcode' => [
+         [
+           'value' => '1',
+         ],
+       ],
+     ];
   }
 
+
+
 }