diff --git a/core/modules/hal/tests/src/Functional/EntityResource/BlockContent/BlockContentHalJsonAnonTest.php b/core/modules/hal/tests/src/Functional/EntityResource/BlockContent/BlockContentHalJsonAnonTest.php
index 6e1938f..d4ee9ab 100644
--- a/core/modules/hal/tests/src/Functional/EntityResource/BlockContent/BlockContentHalJsonAnonTest.php
+++ b/core/modules/hal/tests/src/Functional/EntityResource/BlockContent/BlockContentHalJsonAnonTest.php
@@ -47,69 +47,6 @@ protected function getExpectedNormalizedEntity() {
           'href' => $this->baseUrl . '/rest/type/block_content/basic',
         ],
       ],
-      'body' => [
-        [
-          'value' => 'The name "llama" was adopted by European settlers from native Peruvians.',
-          'format' => 'plain_text',
-          'summary' => NULL,
-          'lang' => 'en',
-        ],
-      ],
-      'changed' => [
-        [
-          'value' => $this->entity->getChangedTime(),
-          'lang' => 'en',
-        ],
-      ],
-      'default_langcode' => [
-        [
-          'value' => TRUE,
-          'lang' => 'en',
-        ],
-      ],
-      'id' => [
-        [
-          'value' => $this->entity->id(),
-        ],
-      ],
-      'info' => [
-        [
-          'value' => 'Llama',
-          'lang' => 'en',
-        ],
-      ],
-      'langcode' => [
-        [
-          'value' => 'en',
-          'lang' => 'en',
-        ],
-      ],
-      'revision_created' => [
-        [
-          'value' => (int) $this->entity->getRevisionCreationTime(),
-        ],
-      ],
-      'revision_id' => [
-        [
-          'value' => $this->entity->getRevisionId(),
-        ],
-      ],
-      'revision_translation_affected' => [
-        [
-          'value' => TRUE,
-          'lang' => 'en',
-        ],
-      ],
-      'type' => [
-        [
-          'target_id' => 'basic',
-        ],
-      ],
-      'uuid' => [
-        [
-          'value' => $this->entity->uuid(),
-        ],
-      ],
     ];
   }
 
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
index 417dd0f..f531c38 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
@@ -4,6 +4,7 @@
 
 use Drupal\block_content\Entity\BlockContent;
 use Drupal\block_content\Entity\BlockContentType;
+use Drupal\Tests\rest\Functional\BcTimestampNormalizerUnixTestTrait;
 use Drupal\Tests\rest\Functional\EntityResource\EntityResourceTestBase;
 
 /**
@@ -11,6 +12,8 @@
  */
 abstract class BlockContentResourceTestBase extends EntityResourceTestBase {
 
+  use BcTimestampNormalizerUnixTestTrait;
+
   /**
    * {@inheritdoc}
    */
@@ -101,9 +104,7 @@ protected function getExpectedNormalizedEntity() {
       ],
       'revision_log' => [],
       'changed' => [
-        [
-          'value' => $this->entity->getChangedTime(),
-        ],
+        $this->formatExpectedTimestampItemValues($this->entity->getChangedTime()),
       ],
       'revision_id' => [
         [
@@ -111,9 +112,7 @@ protected function getExpectedNormalizedEntity() {
         ],
       ],
       'revision_created' => [
-        [
-          'value' => (int) $this->entity->getRevisionCreationTime(),
-        ],
+        $this->formatExpectedTimestampItemValues((int) $this->entity->getRevisionCreationTime()),
       ],
       'revision_user' => [],
       'revision_translation_affected' => [
@@ -148,7 +147,7 @@ protected function getNormalizedPostEntity() {
       ],
       'info' => [
         [
-          'value' => 'Llama & ' . $this->randomMachineName(),
+          'value' => 'Dramallama',
         ],
       ],
     ];