diff --git a/tests/Models/NullItem.php b/tests/Models/NullItem.php
deleted file mode 100644
index 6c201da..0000000
--- a/tests/Models/NullItem.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItem;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItem
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\Item', new NullItem());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItem
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItem(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemAttribute.php b/tests/Models/NullItemAttribute.php
deleted file mode 100644
index 5f12bdb..0000000
--- a/tests/Models/NullItemAttribute.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemAttribute;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttribute
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemAttribute', new NullItemAttribute());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttribute
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemAttribute(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemAttributeType.php b/tests/Models/NullItemAttributeType.php
deleted file mode 100644
index 698a7ca..0000000
--- a/tests/Models/NullItemAttributeType.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemAttributeType;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeType
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemAttributeType', new NullItemAttributeType());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeType
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemAttributeType(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemAttributeTypeL11n.php b/tests/Models/NullItemAttributeTypeL11n.php
deleted file mode 100644
index ff146e3..0000000
--- a/tests/Models/NullItemAttributeTypeL11n.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemAttributeTypeL11n;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeTypeL11n
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemAttributeTypeL11n', new NullItemAttributeTypeL11n());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeTypeL11n
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemAttributeTypeL11n(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemAttributeValue.php b/tests/Models/NullItemAttributeValue.php
deleted file mode 100644
index 0b88660..0000000
--- a/tests/Models/NullItemAttributeValue.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemAttributeValue;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeValue
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemAttributeValue', new NullItemAttributeValue());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemAttributeValue
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemAttributeValue(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemL11n.php b/tests/Models/NullItemL11n.php
deleted file mode 100644
index 6649343..0000000
--- a/tests/Models/NullItemL11n.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemL11n;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemL11n
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemL11n', new NullItemL11n());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemL11n
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemL11n(2);
-        self::assertEquals(2, $null->getId());
-    }
-}
diff --git a/tests/Models/NullItemL11nType.php b/tests/Models/NullItemL11nType.php
deleted file mode 100644
index 7e2808f..0000000
--- a/tests/Models/NullItemL11nType.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   tests
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-namespace Modules\ItemManagement\tests\Models;
-
-use Modules\ItemManagement\Models\NullItemL11nType;
-
-/**
- * @internal
- */
-final class Null extends \PHPUnit\Framework\TestCase
-{
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemL11nType
-     * @group framework
-     */
-    public function testNull() : void
-    {
-        self::assertInstanceOf('\Modules\ItemManagement\Models\ItemL11nType', new NullItemL11nType());
-    }
-
-    /**
-     * @covers Modules\ItemManagement\Models\NullItemL11nType
-     * @group framework
-     */
-    public function testId() : void
-    {
-        $null = new NullItemL11nType(2);
-        self::assertEquals(2, $null->getId());
-    }
-}