[TASK] Add unit tests for ValidExtensionVersionService

extensions/ter_fe2/Tests/Unit/Service/ValidExtensionVersionServiceTest.php

+<?php
+declare(strict_types = 1);
+namespace T3o\TerFe2\Tests\Service;
+
+/*
+ * This file is part of a TYPO3 extension.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use T3o\TerFe2\Service\ValidExtensionVersionService;
+use TYPO3\CMS\Core\Utility\VersionNumberUtility;
+
+class ValidExtensionVersionServiceTest extends \Nimut\TestingFramework\TestCase\AbstractTestCase
+{
+    /**
+     * @test
+     * @param string $versionNumber
+     * @dataProvider isVersionStringOfExtensionVersionValidDataProvider
+     */
+    public function isVersionStringOfExtensionVersionValid(string $versionNumber)
+    {
+        self::assertTrue(
+            ValidExtensionVersionService::isVersionStringValid($versionNumber)
+        );
+    }
+
+    /**
+     * @test
+     * @param string $versionNumber
+     * @dataProvider isVersionStringOfExtensionVersionInvalidDataProvider
+     */
+    public function isVersionStringOfExtensionVersionInvalid(string $versionNumber)
+    {
+        self::assertFalse(
+            ValidExtensionVersionService::isVersionStringValid($versionNumber)
+        );
+    }
+
+    /**
+     * Data provider for isVersionStringOfExtensionVersionValid
+     *
+     * @return array
+     */
+    public function isVersionStringOfExtensionVersionValidDataProvider()
+    {
+        return [
+            ['Version 1.0.0 is valid' => '1.0.0'],
+            ['Version 1.99.0 is valid' => '1.99.0'],
+            ['Version 1.999.999 is valid' => '1.999.999'],
+            ['Version 0.999.999 is valid' => '0.999.999'],
+            ['Version 0.0.0 is valid' => '0.0.0'],
+        ];
+    }
+
+    /**
+     * Data provider for isVersionStringOfExtensionVersionInvalid
+     *
+     * @return array
+     */
+    public function isVersionStringOfExtensionVersionInvalidDataProvider()
+    {
+        return [
+            ['Version 1.0.00 is invalid' => '1.0.00'],
+            ['Version 01.0.0 is invalid' => '01.0.0'],
+            ['Version 1.0.0-beta is invalid' => '1.0.0-beta'],
+            ['Version 1.0.0 - dev is invalid' => '1.0.0 - dev'],
+            ['Version v1.0.0 is invalid' => 'v1.0.0'],
+            ['Version 1.0.9999 is invalid' => '1.0.9999'],
+            ['Version 1.0 is invalid' => '1.0'],
+            ['Version 1.0.0 Free is invalid' => '1.0.0 Free'],
+        ];
+    }
+}