From 06db8f994411a41efd6f45eea94e0ff1aafcad33 Mon Sep 17 00:00:00 2001
From: Francimar Alves <mazinsw@gmail.com>
Date: Mon, 23 Jul 2018 17:48:02 -0300
Subject: [PATCH] Using gd instead of imagemagick to help testing generated
 images

---
 composer.json                                 |  4 +--
 .../Graphics/Filter/BayerOrderedTest.php      | 29 ++++++++++++-------
 .../Graphics/Filter/FloydSteinbergTest.php    | 29 ++++++++++++-------
 tests/Thermal/Graphics/ImageTest.php          | 14 +++++++++
 4 files changed, 51 insertions(+), 25 deletions(-)

diff --git a/composer.json b/composer.json
index cd3dd19..e09ed45 100644
--- a/composer.json
+++ b/composer.json
@@ -18,11 +18,9 @@
         "ext-mbstring": "*"
     },
     "require-dev": {
-        "ext-imagick": "*",
         "phpunit/phpunit": "5.*",
         "scrutinizer/ocular": "@stable",
-        "squizlabs/php_codesniffer": "@stable",
-        "lupka/phpunit-compare-images": "^1.0"
+        "squizlabs/php_codesniffer": "@stable"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Thermal/Graphics/Filter/BayerOrderedTest.php b/tests/Thermal/Graphics/Filter/BayerOrderedTest.php
index bd54dd6..9f19283 100644
--- a/tests/Thermal/Graphics/Filter/BayerOrderedTest.php
+++ b/tests/Thermal/Graphics/Filter/BayerOrderedTest.php
@@ -3,29 +3,36 @@
 namespace Thermal\Graphics\Filter;
 
 use Thermal\PrinterTest;
-use Lupka\PHPUnitCompareImages\CompareImagesTrait;
+use Thermal\Graphics\ImageTest;
 
 class BayerOrderedTest extends \PHPUnit_Framework_TestCase
 {
-    use CompareImagesTrait;
-
     public function testProcess()
     {
         $image_path = dirname(dirname(dirname(__DIR__))) . '/resources/sample.jpg';
         $image = imagecreatefromjpeg($image_path);
         $filter = new BayerOrdered();
-        $new_image = $filter->process($image);
+        $result_image = $filter->process($image);
         imagedestroy($image);
         ob_start();
-        imagepng($new_image);
+        imagepng($result_image);
         $image_data = ob_get_contents();
         ob_end_clean();
-        imagedestroy($new_image);
-        $result_image = new \Imagick();
-        $result_image->readImageBlob($image_data);
         $expected_data = PrinterTest::getExpectedBuffer('sample_bayer_ordered.png', $image_data);
-        $expected_image = new \Imagick();
-        $expected_image->readImageBlob($expected_data);
-        $this->assertImagesSame($expected_image, $result_image);
+        $expected_image = imagecreatefromstring($expected_data);
+        $this->assertEquals(
+            [
+                'width' => imagesx($expected_image),
+                'height' => imagesy($expected_image),
+                'pixels' => ImageTest::extractColors($expected_image)
+            ],
+            [
+                'width' => imagesx($result_image),
+                'height' => imagesy($result_image),
+                'pixels' => ImageTest::extractColors($result_image)
+            ]
+        );
+        imagedestroy($expected_image);
+        imagedestroy($result_image);
     }
 }
diff --git a/tests/Thermal/Graphics/Filter/FloydSteinbergTest.php b/tests/Thermal/Graphics/Filter/FloydSteinbergTest.php
index c623625..cefb7ba 100644
--- a/tests/Thermal/Graphics/Filter/FloydSteinbergTest.php
+++ b/tests/Thermal/Graphics/Filter/FloydSteinbergTest.php
@@ -3,29 +3,36 @@
 namespace Thermal\Graphics\Filter;
 
 use Thermal\PrinterTest;
-use Lupka\PHPUnitCompareImages\CompareImagesTrait;
+use Thermal\Graphics\ImageTest;
 
 class FloydSteinbergTest extends \PHPUnit_Framework_TestCase
 {
-    use CompareImagesTrait;
-
     public function testProcess()
     {
         $image_path = dirname(dirname(dirname(__DIR__))) . '/resources/sample.jpg';
         $image = imagecreatefromjpeg($image_path);
         $filter = new FloydSteinberg();
-        $new_image = $filter->process($image);
+        $result_image = $filter->process($image);
         imagedestroy($image);
         ob_start();
-        imagepng($new_image);
+        imagepng($result_image);
         $image_data = ob_get_contents();
         ob_end_clean();
-        imagedestroy($new_image);
-        $result_image = new \Imagick();
-        $result_image->readImageBlob($image_data);
         $expected_data = PrinterTest::getExpectedBuffer('sample_floyd_steinberg.png', $image_data);
-        $expected_image = new \Imagick();
-        $expected_image->readImageBlob($expected_data);
-        $this->assertImagesSame($expected_image, $result_image);
+        $expected_image = imagecreatefromstring($expected_data);
+        $this->assertEquals(
+            [
+                'width' => imagesx($expected_image),
+                'height' => imagesy($expected_image),
+                'pixels' => ImageTest::extractColors($expected_image)
+            ],
+            [
+                'width' => imagesx($result_image),
+                'height' => imagesy($result_image),
+                'pixels' => ImageTest::extractColors($result_image)
+            ]
+        );
+        imagedestroy($expected_image);
+        imagedestroy($result_image);
     }
 }
diff --git a/tests/Thermal/Graphics/ImageTest.php b/tests/Thermal/Graphics/ImageTest.php
index e8dba3f..4dd600a 100644
--- a/tests/Thermal/Graphics/ImageTest.php
+++ b/tests/Thermal/Graphics/ImageTest.php
@@ -6,6 +6,20 @@
 
 class ImageTest extends \PHPUnit_Framework_TestCase
 {
+    public static function extractColors($image)
+    {
+        $colors = [];
+        $width = imagesx($image);
+        $height = imagesy($image);
+        for ($y = 0; $y < $height; $y++) {
+            for ($x = 0; $x < $width; $x++) {
+                $color = imagecolorsforindex($image, imagecolorat($image, $x, $y));
+                $colors[] = $color;
+            }
+        }
+        return $colors;
+    }
+
     public function testCreateFromData()
     {
         $image_path = dirname(dirname(__DIR__)) . '/resources/sample.jpg';