Introduce ConfigFileTransformer for Config files

tests/src/Core/Config/Util/ConfigFileTransformerTest.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2023, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Test\src\Core\Config\Util;
+
+use Friendica\Core\Config\Util\ConfigFileTransformer;
+use Friendica\Test\MockedTest;
+
+class ConfigFileTransformerTest extends MockedTest
+{
+	public function dataTests()
+	{
+		return [
+			'default' => [
+				'configFile' => (dirname(__DIR__, 4) . '/datasets/config/A.node.config.php'),
+			],
+			'extended' => [
+				'configFile' => (dirname(__DIR__, 4) . '/datasets/config/B.node.config.php'),
+			],
+		];
+	}
+
+	/**
+	 * Tests if the given config will be decoded into an array and encoded into the same string again
+	 *
+	 * @dataProvider dataTests
+	 */
+	public function testConfigFile(string $configFile)
+	{
+		$dataArray = include $configFile;
+
+		$newConfig = ConfigFileTransformer::encode($dataArray);
+
+		self::assertEquals(file_get_contents($configFile), $newConfig);
+	}
+}