diff --git a/core/modules/rest/src/Tests/ResourceTest.php b/core/modules/rest/tests/src/Functional/ResourceTest.php
similarity index 99%
rename from core/modules/rest/src/Tests/ResourceTest.php
rename to core/modules/rest/tests/src/Functional/ResourceTest.php
index db037984b7..8a32016fc3 100644
--- a/core/modules/rest/src/Tests/ResourceTest.php
+++ b/core/modules/rest/tests/src/Functional/ResourceTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\rest\Tests;
+namespace Drupal\Tests\rest\Functional;
 
 use Drupal\Core\Session\AccountInterface;
 use Drupal\entity_test\Entity\EntityTest;
diff --git a/core/modules/rest/src/Tests/Views/ExcludedFieldTokenTest.php b/core/modules/rest/tests/src/Functional/Views/ExcludedFieldTokenTest.php
similarity index 97%
rename from core/modules/rest/src/Tests/Views/ExcludedFieldTokenTest.php
rename to core/modules/rest/tests/src/Functional/Views/ExcludedFieldTokenTest.php
index fd0541088c..cf9913d85a 100644
--- a/core/modules/rest/src/Tests/Views/ExcludedFieldTokenTest.php
+++ b/core/modules/rest/tests/src/Functional/Views/ExcludedFieldTokenTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\rest\Tests\Views;
+namespace Drupal\Tests\rest\Functional\Views;
 
 use Drupal\node\Entity\Node;
 use Drupal\Tests\views\Functional\ViewTestBase;
diff --git a/core/modules/rest/src/Tests/Views/StyleSerializerTest.php b/core/modules/rest/tests/src/Functional/Views/StyleSerializerTest.php
similarity index 99%
rename from core/modules/rest/src/Tests/Views/StyleSerializerTest.php
rename to core/modules/rest/tests/src/Functional/Views/StyleSerializerTest.php
index 6a1dbad9df..551a5c7027 100644
--- a/core/modules/rest/src/Tests/Views/StyleSerializerTest.php
+++ b/core/modules/rest/tests/src/Functional/Views/StyleSerializerTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\rest\Tests\Views;
+namespace Drupal\Tests\rest\Functional\Views;
 
 use Drupal\Component\Serialization\Json;
 use Drupal\Core\Cache\Cache;