Add basic Config class test

Author: glensc

tests/ConfigTest.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Xhgui\Profiler\Test;
+
+use Xhgui\Profiler\Config;
+use Xhgui\Profiler\Profiler;
+
+class ConfigTest extends TestCase
+{
+    public function testDefaults()
+    {
+        $config = new Config();
+        $this->assertEquals(Profiler::SAVER_STACK, $config['save.handler']);
+    }
+}