diff --git a/tests/Models/NullItem.php b/tests/Models/NullItem.php
new file mode 100644
index 0000000..6c201da
--- /dev/null
+++ b/tests/Models/NullItem.php
@@ -0,0 +1,42 @@
+<?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
new file mode 100644
index 0000000..5f12bdb
--- /dev/null
+++ b/tests/Models/NullItemAttribute.php
@@ -0,0 +1,42 @@
+<?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/NullItemAttributeTest.php b/tests/Models/NullItemAttributeTest.php
new file mode 100644
index 0000000..33ccbcf
--- /dev/null
+++ b/tests/Models/NullItemAttributeTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemAttributeTest 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
new file mode 100644
index 0000000..698a7ca
--- /dev/null
+++ b/tests/Models/NullItemAttributeType.php
@@ -0,0 +1,42 @@
+<?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
new file mode 100644
index 0000000..ff146e3
--- /dev/null
+++ b/tests/Models/NullItemAttributeTypeL11n.php
@@ -0,0 +1,42 @@
+<?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/NullItemAttributeTypeL11nTest.php b/tests/Models/NullItemAttributeTypeL11nTest.php
new file mode 100644
index 0000000..03b5216
--- /dev/null
+++ b/tests/Models/NullItemAttributeTypeL11nTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemAttributeTypeL11nTest 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/NullItemAttributeTypeTest.php b/tests/Models/NullItemAttributeTypeTest.php
new file mode 100644
index 0000000..6d34120
--- /dev/null
+++ b/tests/Models/NullItemAttributeTypeTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemAttributeTypeTest 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/NullItemAttributeValue.php b/tests/Models/NullItemAttributeValue.php
new file mode 100644
index 0000000..0b88660
--- /dev/null
+++ b/tests/Models/NullItemAttributeValue.php
@@ -0,0 +1,42 @@
+<?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/NullItemAttributeValueTest.php b/tests/Models/NullItemAttributeValueTest.php
new file mode 100644
index 0000000..5ca9fa2
--- /dev/null
+++ b/tests/Models/NullItemAttributeValueTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemAttributeValueTest 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
new file mode 100644
index 0000000..6649343
--- /dev/null
+++ b/tests/Models/NullItemL11n.php
@@ -0,0 +1,42 @@
+<?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/NullItemL11nTest.php b/tests/Models/NullItemL11nTest.php
new file mode 100644
index 0000000..4682f14
--- /dev/null
+++ b/tests/Models/NullItemL11nTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemL11nTest 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
new file mode 100644
index 0000000..7e2808f
--- /dev/null
+++ b/tests/Models/NullItemL11nType.php
@@ -0,0 +1,42 @@
+<?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());
+    }
+}
diff --git a/tests/Models/NullItemL11nTypeTest.php b/tests/Models/NullItemL11nTypeTest.php
new file mode 100644
index 0000000..1dc84e1
--- /dev/null
+++ b/tests/Models/NullItemL11nTypeTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemL11nTypeTest 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());
+    }
+}
diff --git a/tests/Models/NullItemTest.php b/tests/Models/NullItemTest.php
new file mode 100644
index 0000000..3a6685e
--- /dev/null
+++ b/tests/Models/NullItemTest.php
@@ -0,0 +1,42 @@
+<?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 NullItemTest 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());
+    }
+}