diff --git a/tests/Models/NullAccountExternalTest.php b/tests/Models/NullAccountExternalTest.php
index 57831f6..851cac1 100644
--- a/tests/Models/NullAccountExternalTest.php
+++ b/tests/Models/NullAccountExternalTest.php
@@ -23,7 +23,7 @@ final class NullAccountExternalTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Admin\Models\NullAccountExternal
-     * @group framework
+     * @group module
      */
     public function testNull() : void
     {
@@ -32,7 +32,7 @@ final class NullAccountExternalTest extends \PHPUnit\Framework\TestCase
 
     /**
      * @covers Modules\Admin\Models\NullAccountExternal
-     * @group framework
+     * @group module
      */
     public function testId() : void
     {
@@ -42,7 +42,7 @@ final class NullAccountExternalTest extends \PHPUnit\Framework\TestCase
 
     /**
      * @covers Modules\Admin\Models\NullAccountExternal
-     * @group framework
+     * @group module
      */
     public function testJsonSerialize() : void
     {
diff --git a/tests/Models/NullAccountPermissionTest.php b/tests/Models/NullAccountPermissionTest.php
index 4cb0403..140cee9 100755
--- a/tests/Models/NullAccountPermissionTest.php
+++ b/tests/Models/NullAccountPermissionTest.php
@@ -39,4 +39,14 @@ final class NullAccountPermissionTest extends \PHPUnit\Framework\TestCase
         $null = new NullAccountPermission(2);
         self::assertEquals(2, $null->id);
     }
+
+    /**
+     * @covers Modules\Admin\Models\NullAccountPermission
+     * @group module
+     */
+    public function testJsonSerialize() : void
+    {
+        $null = new NullAccountPermission(2);
+        self::assertEquals(['id' => 2], $null);
+    }
 }
diff --git a/tests/Models/NullAccountTest.php b/tests/Models/NullAccountTest.php
index 64b205a..8b90b36 100755
--- a/tests/Models/NullAccountTest.php
+++ b/tests/Models/NullAccountTest.php
@@ -39,4 +39,14 @@ final class NullAccountTest extends \PHPUnit\Framework\TestCase
         $null = new NullAccount(2);
         self::assertEquals(2, $null->id);
     }
+
+    /**
+     * @covers Modules\Admin\Models\NullAccount
+     * @group module
+     */
+    public function testJsonSerialize() : void
+    {
+        $null = new NullAccount(2);
+        self::assertEquals(['id' => 2], $null);
+    }
 }
diff --git a/tests/Models/NullAddressTest.php b/tests/Models/NullAddressTest.php
index 4e37e27..bdb83e5 100755
--- a/tests/Models/NullAddressTest.php
+++ b/tests/Models/NullAddressTest.php
@@ -39,4 +39,14 @@ final class NullAddressTest extends \PHPUnit\Framework\TestCase
         $null = new NullAddress(2);
         self::assertEquals(2, $null->id);
     }
+
+    /**
+     * @covers Modules\Admin\Models\NullAddress
+     * @group module
+     */
+    public function testJsonSerialize() : void
+    {
+        $null = new NullAddress(2);
+        self::assertEquals(['id' => 2], $null);
+    }
 }
diff --git a/tests/Models/NullDataChangeTest.php b/tests/Models/NullDataChangeTest.php
index be171d3..e72ccff 100644
--- a/tests/Models/NullDataChangeTest.php
+++ b/tests/Models/NullDataChangeTest.php
@@ -23,7 +23,7 @@ final class NullDataChangeTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Admin\Models\NullDataChange
-     * @group framework
+     * @group module
      */
     public function testNull() : void
     {
@@ -32,7 +32,7 @@ final class NullDataChangeTest extends \PHPUnit\Framework\TestCase
 
     /**
      * @covers Modules\Admin\Models\NullDataChange
-     * @group framework
+     * @group module
      */
     public function testId() : void
     {
@@ -42,7 +42,7 @@ final class NullDataChangeTest extends \PHPUnit\Framework\TestCase
 
     /**
      * @covers Modules\Admin\Models\NullDataChange
-     * @group framework
+     * @group module
      */
     public function testJsonSerialize() : void
     {