diff --git a/README.md b/README.md
index 9f14a2b..3a7c033 100644
--- a/README.md
+++ b/README.md
@@ -12,23 +12,30 @@ You can set session or include paths used in your target product.
 If you call `request` method like http request, you can get a parsed response instance of `Guzzle\Http\Message\Response`
 
 ```php
-use Test/FunctionalTester;
-
-$tester = new FunctionalTester();
-
-//set session used in your target product.
-$tester->setSession(['id' => 'hogehoge']);
+<?php
 
-//add includePath used in your target product.
-$tester->addIncludePath(':/path/to/src');
-
-//if you can get response like http request if you call get or post method
-$response = $tester->get('index.php', ['username' => 'hogehoge']);
-
-//you can assert request results like this
-$this->assertEquals(200, $response->getStatusCode());
-$this->assertEquals('OK', $response->getBody());
+use Test/FunctionalTester;
 
+class IndexTest extends PHPUnit_Framework_TestCase
+{
+    public function  testIndex
+    {
+        $tester = new FunctionalTester();
+
+        //set session used in your target product.
+        $tester->setSession(['id' => 'hogehoge']);
+        
+        //add includePath used in your target product.
+        $tester->addIncludePath(':/path/to/src');
+        
+        //if you can get response like http request if you call get or post method
+        $response = $tester->get('index.php', ['username' => 'hogehoge']);
+        
+        //you can assert request results like this.
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertEquals('OK', $response->getBody());
+    }
+}
 ```