Tests for settings

tests/Unit/SettingsSaverTest.php

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+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+namespace Tests\Unit;
+
+use App\DataMapper\CompanySettings;
+use App\Utils\Traits\SettingsSaver;
+use Tests\TestCase;
+
+/**
+ * @test
+ */
+class SettingsSaverTest extends TestCase
+{
+    use SettingsSaver;
+
+    public function setUp() :void
+    {
+        parent::setUp();
+    }
+
+    public function testNullValueForStringTest()
+    {
+        $key = 'show_all_tasks_client_portal';
+        $value = null;
+
+        $result = $this->checkAttribute($key, $value);
+
+        $this->assertFalse($result);
+
+    }
+}