From 284003c95d5469999a7522da381700d526828f1c Mon Sep 17 00:00:00 2001
From: Panagiotis Koursaris <panakourweb@gmail.com>
Date: Thu, 23 Mar 2017 15:28:21 +0200
Subject: [PATCH] Update LoggerTest.php

---
 Behavioral/NullObject/Tests/LoggerTest.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Behavioral/NullObject/Tests/LoggerTest.php b/Behavioral/NullObject/Tests/LoggerTest.php
index 6b2ab30..9b74c35 100644
--- a/Behavioral/NullObject/Tests/LoggerTest.php
+++ b/Behavioral/NullObject/Tests/LoggerTest.php
@@ -12,7 +12,7 @@ class LoggerTest extends TestCase
     public function testNullObject()
     {
         $service = new Service(new NullLogger());
-        $this->expectOutputString(null);
+        $this->expectOutputString('');
         $service->doSomething();
     }