From 51e9ef0349ebd66e8161c2c11b7b3d19972f534a Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.net>
Date: Sun, 11 May 2014 16:38:47 +0200
Subject: [PATCH] added checksumCommand

---
 .../Image/Commands/ChecksumCommand.php        | 23 ++++++++++++++++
 tests/ChecksumCommandTest.php                 | 26 +++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 src/Intervention/Image/Commands/ChecksumCommand.php
 create mode 100644 tests/ChecksumCommandTest.php

diff --git a/src/Intervention/Image/Commands/ChecksumCommand.php b/src/Intervention/Image/Commands/ChecksumCommand.php
new file mode 100644
index 00000000..ef2f1c89
--- /dev/null
+++ b/src/Intervention/Image/Commands/ChecksumCommand.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Intervention\Image\Commands;
+
+class ChecksumCommand extends AbstractCommand
+{
+    public function execute($image)
+    {
+        $colors = array();
+
+        $size = $image->getSize();
+
+        for ($x=0; $x <= ($size->width-1); $x++) {
+            for ($y=0; $y <= ($size->height-1); $y++) {
+                $colors[] = $image->pickColor($x, $y, 'array');
+            }
+        }
+
+        $this->setOutput(md5(serialize($colors)));
+
+        return true;
+    }
+}
diff --git a/tests/ChecksumCommandTest.php b/tests/ChecksumCommandTest.php
new file mode 100644
index 00000000..e71151ba
--- /dev/null
+++ b/tests/ChecksumCommandTest.php
@@ -0,0 +1,26 @@
+<?php
+
+use Intervention\Image\Commands\ChecksumCommand;
+
+class ExifCommandTest extends PHPUnit_Framework_TestCase
+{
+    public function tearDown()
+    {
+        Mockery::close();
+    }
+    
+    public function testExecute()
+    {
+        $size = Mockery::mock('Intervention\Image\Size', array(3, 3));
+        $color = array(0,0,0,1);
+        $resource = imagecreatefrompng(__DIR__.'/images/tile.png');
+        $image = Mockery::mock('Intervention\Image\Image');
+        $image->shouldReceive('getSize')->once()->andReturn($size);
+        $image->shouldReceive('pickColor')->times(9)->andReturn($color);
+        $command = new ChecksumCommand(array());
+        $result = $command->execute($image);
+        $this->assertTrue($result);
+        $this->assertTrue($command->hasOutput());
+        $this->assertEquals('ec9cbdb71be04e26b4a89333f20c273b', $command->getOutput());
+    }
+}