construct application to increase code coverage

tests/applicationtest.php

+<?php
+
+/**
+ * ownCloud - Mail
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Christoph Wurst <christoph@winzerhof-wurst.at>
+ * @copyright Christoph Wurst 2015
+ */
+use Test\TestCase;
+use OCA\Mail\AppInfo\Application;
+
+class ApplicationTest extends TestCase {
+
+	public function testConstrucor() {
+		// Not really a test – it's just about code coverage
+		$app = new Application();
+	}
+
+}