Add basic unitTest for xml validation (OpenMage#2304)

dev/tests/unit/Base/XmlFileLoadingTest.php

@@ -0,0 +1,52 @@
+<?php
+declare(strict_types=1);
+
+namespace OpenMage\Tests\Unit\Base;
+
+use PHPUnit\Framework\TestCase;
+
+class XmlFileLoadingTest  extends TestCase
+{
+
+    public function provideXmlFiles(): array
+    {
+        $root = realpath(__DIR__ . '/../../../../') . '/';
+
+        $result = [];
+        $result[] = [
+            $root . 'lib/Zend/Locale/Data/es_419.xml'
+        ];
+
+        return $result;
+    }
+
+    /**
+     *
+     * @dataProvider provideXmlFiles
+     * @param $filepath
+     * @return void
+     */
+    public function testFileLoading($filepath): void
+    {
+        //$simplexml = new \SimpleXMLElement(file_get_contents($filepath));
+        $simplexml = simplexml_load_file(
+            $filepath,
+            null,
+            LIBXML_PEDANTIC //not needed by OpenMage, but good to test more strictly
+        );
+        $this->assertNotEmpty($simplexml->asXML());
+    }
+
+    /**
+     *
+     * @dataProvider provideXmlFiles
+     * @param $filepath
+     * @return void
+     */
+    public function testXmlReaderIsValid($filepath): void
+    {
+        $xml = \XMLReader::open($filepath);
+        $xml->setParserProperty(\XMLReader::VALIDATE, true);
+        $this->assertTrue($xml->isValid());
+    }
+}