Included vendor/ to the project

vendor/phar-io/manifest/tests/xml/AuthorElementCollectionTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace PharIo\Manifest;
+
+use DOMDocument;
+
+class AuthorElementCollectionTest extends \PHPUnit_Framework_TestCase {
+    public function testAuthorElementCanBeRetrievedFromCollection() {
+        $dom = new DOMDocument();
+        $dom->loadXML('<?xml version="1.0" ?><author xmlns="https://phar.io/xml/manifest/1.0" name="Reiner Zufall" email="reiner@zufall.de" />');
+        $collection = new AuthorElementCollection($dom->childNodes);
+
+        foreach($collection as $authorElement) {
+            $this->assertInstanceOf(AuthorElement::class, $authorElement);
+        }
+    }
+
+}