From b9d335bb43e64bae5e05155ebcbffee8a2d40038 Mon Sep 17 00:00:00 2001
From: Trismegiste <florent.g@allopneus.com>
Date: Mon, 13 May 2013 21:49:51 +0200
Subject: [PATCH] add test for null object

---
 Tests/NullObject/LoggerTest.php | 35 +++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Tests/NullObject/LoggerTest.php

diff --git a/Tests/NullObject/LoggerTest.php b/Tests/NullObject/LoggerTest.php
new file mode 100644
index 0000000..36edb6b
--- /dev/null
+++ b/Tests/NullObject/LoggerTest.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Tests\NullObject;
+
+use DesignPatterns\NullObject\NullLogger;
+use DesignPatterns\NullObject\Service;
+use DesignPatterns\NullObject\PrintLogger;
+
+/**
+ * LoggerTest tests for different loggers
+ */
+class LoggerTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function testNullObject()
+    {
+        // one can use a singleton for NullObjet : I don't think it's a good idea
+        // because the purpose behind null object is to "avoid special case".
+        $service = new Service(new NullLogger());
+        $this->expectOutputString(null);  // no output
+        $service->doSomething();
+    }
+
+    public function testStandardLogger()
+    {
+        $service = new Service(new PrintLogger());
+        $this->expectOutputString('We are in DesignPatterns\NullObject\Service::doSomething');
+        $service->doSomething();
+    }
+
+}
\ No newline at end of file