Missing test files after refactoring folder structure

tests/DependencyInjection/ConfigurationTest.php

@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * (c) Christian Gripp <mail@core23.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Core23\PiwikBundle\Tests\DependencyInjection;
+
+use Core23\PiwikBundle\DependencyInjection\Configuration;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Processor;
+
+class ConfigurationTest extends TestCase
+{
+    public function testOptions()
+    {
+        $processor = new Processor();
+
+        $config = $processor->processConfiguration(new Configuration(), array(array(
+        )));
+
+        $expected = array(
+            'http' => array(
+                'client'          => 'httplug.client.default',
+                'message_factory' => 'httplug.message_factory.default',
+            ),
+        );
+
+        $this->assertSame($expected, $config);
+    }
+}