more tests and make classes final

Models/NullDashboardBoard.php

@@ -24,4 +24,15 @@ namespace Modules\Dashboard\Models;
  */
 final class NullDashboardBoard extends DashboardBoard
 {
+	/**
+     * Constructor
+     *
+     * @param int $id Model id
+     *
+     * @since 1.0.0
+     */
+    public function __construct(int $id = 0)
+    {
+        $this->id = $id;
+    }
 }

Models/NullDashboardComponent.php

@@ -24,4 +24,15 @@ namespace Modules\Dashboard\Models;
  */
 final class NullDashboardComponent extends DashboardComponent
 {
+	/**
+     * Constructor
+     *
+     * @param int $id Model id
+     *
+     * @since 1.0.0
+     */
+    public function __construct(int $id = 0)
+    {
+        $this->id = $id;
+    }
 }

tests/Models/NullDashboardBoardTest.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\Dashboard\tests\Models;
+
+use Modules\Dashboard\Models\NullDashboardBoard;
+
+/**
+ * @internal
+ */
+final class NullDashboardBoardTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @covers Modules\Dashboard\Models\NullDashboardBoard
+     * @group framework
+     */
+    public function testNull() : void
+    {
+        self::assertInstanceOf('\Modules\Dashboard\Models\DashboardBoard', new NullDashboardBoard());
+    }
+
+    /**
+     * @covers Modules\Dashboard\Models\NullDashboardBoard
+     * @group framework
+     */
+    public function testId() : void
+    {
+        $null = new NullDashboardBoard(2);
+        self::assertEquals(2, $null->getId());
+    }
+}

tests/Models/NullDashboardComponentTest.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\Dashboard\tests\Models;
+
+use Modules\Dashboard\Models\NullDashboardComponent;
+
+/**
+ * @internal
+ */
+final class NullDashboardComponentTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @covers Modules\Dashboard\Models\NullDashboardComponent
+     * @group framework
+     */
+    public function testNull() : void
+    {
+        self::assertInstanceOf('\Modules\Dashboard\Models\DashboardComponent', new NullDashboardComponent());
+    }
+
+    /**
+     * @covers Modules\Dashboard\Models\NullDashboardComponent
+     * @group framework
+     */
+    public function testId() : void
+    {
+        $null = new NullDashboardComponent(2);
+        self::assertEquals(2, $null->getId());
+    }
+}