NEW: Enable multiple image manipulation back-ends on the Image class

filesystem/GD.php

@@ -4,7 +4,7 @@
  * @package framework
  * @subpackage filesystem
  */
-class GD extends Object {
+class GDBackend extends Object implements Image_Backend {
 	protected $gd, $width, $height;
 	protected $quality;
 	
@@ -28,14 +28,21 @@ class GD extends Object {
 			// We use getimagesize instead of extension checking, because sometimes extensions are wrong.
 			list($width, $height, $type, $attr) = getimagesize($filename);
 			switch($type) {
-				case 1: if(function_exists('imagecreatefromgif')) $this->setGD(imagecreatefromgif($filename)); break;
-				case 2: if(function_exists('imagecreatefromjpeg')) $this->setGD(imagecreatefromjpeg($filename)); break;
-				case 3: if(function_exists('imagecreatefrompng')) {
+				case 1:
+					if(function_exists('imagecreatefromgif'))
+						$this->setImageResource(imagecreatefromgif($filename));
+					break;
+				case 2:
+					if(function_exists('imagecreatefromjpeg'))
+						$this->setImageResource(imagecreatefromjpeg($filename));
+					break;
+				case 3:
+					if(function_exists('imagecreatefrompng')) {
 						$img = imagecreatefrompng($filename);
 						imagesavealpha($img, true); // save alphablending setting (important)
-					$this->setGD($img);
-					break;
+						$this->setImageResource($img);
 					}
+					break;
 			}
 		}
 		
@@ -43,14 +50,26 @@ class GD extends Object {
 		parent::__construct();
 	}
 	
+	public function setImageResource($resource) {
+		$this->gd = $resource;
+		$this->width = imagesx($resource);
+		$this->height = imagesy($resource);
+	}
+
 	public function setGD($gd) {
-		$this->gd = $gd;
-		$this->width = imagesx($gd);
-		$this->height = imagesy($gd);
+		Deprecation::notice('3.1', 'Use GD::setImageResource instead',
+			Deprecation::SCOPE_CLASS);
+		return $this->setImageResource($gd);
+	}
+	
+	public function getImageResource() {
+		return $this->gd;
 	}
 
 	public function getGD() {
-		return $this->gd;
+		Deprecation::notice('3.1', 'GD::getImageResource instead',
+			Deprecation::SCOPE_CLASS);
+		return $this->getImageResource();
 	}
 
 	/**
@@ -106,7 +125,7 @@ class GD extends Object {
 			imagecopyresampled($newGD, $this->gd, 0,0, $srcX, $srcY, $width, $height, $srcWidth, $srcHeight);
 		}
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 	
@@ -121,10 +140,21 @@ class GD extends Object {
 	    return $gd;
 	}
 	
-	public function hasGD() {
+	/**
+	 * hasImageResource
+	 *
+	 * @return boolean
+	 */
+	public function hasImageResource() {
 		return $this->gd ? true : false;
 	}
 	
+	public function hasGD() {
+		Deprecation::notice('3.1', 'GD::hasImageResource instead',
+			Deprecation::SCOPE_CLASS);
+		return $this->hasImageResource();
+	}
+	
 	
 	/**
 	 * Resize an image, skewing it as necessary.
@@ -153,7 +183,7 @@ class GD extends Object {
 		imagecopyresampled($newGD, $this->gd, 0,0, 0, 0, $width, $height, $this->width, $this->height);
 
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 	
@@ -175,7 +205,7 @@ class GD extends Object {
 			$newGD = $this->rotatePixelByPixel($angle);	
 		}
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 	
@@ -237,7 +267,7 @@ class GD extends Object {
 		imagecopyresampled($newGD, $this->gd, 0, 0, $left, $top, $width, $height, $width, $height);
 		
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 	
@@ -356,7 +386,7 @@ class GD extends Object {
 				$destWidth, $destHeight, $this->width, $this->height);
 		}
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 
@@ -388,7 +418,7 @@ class GD extends Object {
 		}
 		
 		$output = clone $this;
-		$output->setGD($newGD);
+		$output->setImageResource($newGD);
 		return $output;
 	}
 	
@@ -429,4 +459,4 @@ class GD extends Object {
 	}
 	
 }
-
+class_alias("GDBackend", "GD");

filesystem/ImagickBackend.php

@@ -0,0 +1,266 @@
+<?php
+class ImagickBackend extends Imagick implements Image_Backend {
+	protected static $default_quality = 75;
+	
+	/**
+	 * __construct
+	 *
+	 * @param string $filename = null
+	 * @return void
+	 */
+	public function __construct($filename = null) {
+		if(is_string($filename)) {
+			parent::__construct($filename);
+		} else {
+			self::setImageCompressionQuality(self::$default_quality);
+		}
+	}
+
+	/**
+	 * writeTo
+	 *
+	 * @param string $path
+	 * @return void
+	 */
+	public function writeTo($path) {
+		Filesystem::makeFolder(dirname($path));
+		if(is_dir(dirname($path)))
+			self::writeImage($path);
+	}
+	
+	/**
+	 * set_default_quality
+	 *
+	 * @static
+	 * @param int $quality
+	 * @return void
+	 */
+	public static function set_default_quality($quality) {
+		self::$default_quality = $quality;
+	}
+	
+	/**
+	 * setQuality
+	 *
+	 * @param int $quality
+	 * @return void
+	 */
+	public function setQuality($quality) {
+		self::setImageCompressionQuality($quality);
+	}
+	
+	/**
+	 * setImageResource
+	 * 
+	 * Set the backend-specific resource handling the manipulations. Replaces Image::setGD()
+	 *
+	 * @param mixed $resource
+	 * @return void
+	 */
+	public function setImageResource($resource) {
+		trigger_error("Imagick::setImageResource is not supported", E_USER_ERROR);
+	}
+	
+	/**
+	 * getImageResource
+	 * 
+	 * Get the backend-specific resource handling the manipulations. Replaces Image::getGD()
+	 *
+	 * @return mixed
+	 */
+	public function getImageResource() {
+		return $this;
+	}
+	
+	/**
+	 * hasImageResource
+	 *
+	 * @return boolean
+	 */
+	public function hasImageResource() {
+		return true; // $this is the resource, necessarily
+	}
+
+	/**
+	 * resize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resize($width, $height) {
+		if(!$this->valid()) return;
+	
+		$width = round($width);
+		$height = round($height);
+		
+		$geometry = $this->getImageGeometry();
+		
+		// Check that a resize is actually necessary.
+		if ($width == $geometry["width"] && $height == $geometry["height"]) {
+			return $this;
+		}
+		
+		if(!$width && !$height) user_error("No dimensions given", E_USER_ERROR);
+		if(!$width) user_error("Width not given", E_USER_ERROR);
+		if(!$height) user_error("Height not given", E_USER_ERROR);
+		
+		$new = clone $this;
+		$new->resizeImage($width, $height, self::FILTER_LANCZOS, 1);
+		
+		return $new;
+	}
+	
+	/**
+	 * resizeRatio
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resizeRatio($maxWidth, $maxHeight, $useAsMinimum = false) {
+		if(!$this->valid()) return;
+		
+		$geometry = $this->getImageGeometry();
+	
+		$widthRatio = $maxWidth / $geometry["width"];
+		$heightRatio = $maxHeight / $geometry["height"];
+		
+		if( $widthRatio < $heightRatio )
+			return $useAsMinimum ? $this->resizeByHeight( $maxHeight ) : $this->resizeByWidth( $maxWidth );
+		else
+			return $useAsMinimum ? $this->resizeByWidth( $maxWidth ) : $this->resizeByHeight( $maxHeight );
+	}
+	
+	/**
+	 * resizeByWidth
+	 *
+	 * @param int $width
+	 * @return Image_Backend
+	 */
+	public function resizeByWidth($width) {
+		if(!$this->valid()) return;
+		
+		$geometry = $this->getImageGeometry();
+		
+		$heightScale = $width / $geometry["width"];
+		return $this->resize( $width, $heightScale * $geometry["height"] );
+	}
+	
+	/**
+	 * resizeByHeight
+	 *
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resizeByHeight($height) {
+		if(!$this->valid()) return;
+		
+		$geometry = $this->getImageGeometry();
+		
+		$scale = $height / $geometry["height"];
+		return $this->resize( $scale * $geometry["width"], $height );
+	}
+	
+	/**
+	 * paddedResize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function paddedResize($width, $height, $backgroundColor = "FFFFFF") {
+		if(!$this->valid()) return;
+		
+		$width = round($width);
+		$height = round($height);
+		$geometry = $this->getImageGeometry();
+		
+		// Check that a resize is actually necessary.
+		if ($width == $geometry["width"] && $height == $geometry["height"]) {
+			return $this;
+		}
+		
+		$new = clone $this;
+		$new->setBackgroundColor($backgroundColor);
+		
+		$destAR = $width / $height;
+		if ($geometry["width"] > 0 && $geometry["height"] > 0) {
+			// We can't divide by zero theres something wrong.
+			
+			$srcAR = $geometry["width"] / $geometry["height"];
+		
+			// Destination narrower than the source
+			if($destAR > $srcAR) {
+				$destY = 0;
+				$destHeight = $height;
+				
+				$destWidth = round( $height * $srcAR );
+				$destX = round( ($width - $destWidth) / 2 );
+			
+			// Destination shorter than the source
+			} else {
+				$destX = 0;
+				$destWidth = $width;
+				
+				$destHeight = round( $width / $srcAR );
+				$destY = round( ($height - $destHeight) / 2 );
+			}
+		
+			$new->extentImage($width, $height, $destX, $destY);
+		}
+		
+		return $new;
+	}
+	
+	/**
+	 * croppedResize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function croppedResize($width, $height) {
+		if(!$this->valid()) return;
+		
+		$width = round($width);
+		$height = round($height);
+		$geometry = $this->getImageGeometry();
+		
+		// Check that a resize is actually necessary.
+		if ($width == $geometry["width"] && $height == $geometry["height"]) {
+			return $this;
+		}
+		
+		$new = clone $this;
+		$new->setBackgroundColor($backgroundColor);
+		
+		$destAR = $width / $height;
+		if ($geometry["width"] > 0 && $geometry["height"] > 0) {
+			// We can't divide by zero theres something wrong.
+			
+			$srcAR = $this->width / $this->height;
+		
+			// Destination narrower than the source
+			if($destAR < $srcAR) {
+				$srcY = 0;
+				$srcHeight = $this->height;
+				
+				$srcWidth = round( $this->height * $destAR );
+				$srcX = round( ($this->width - $srcWidth) / 2 );
+			
+			// Destination shorter than the source
+			} else {
+				$srcX = 0;
+				$srcWidth = $this->width;
+				
+				$srcHeight = round( $this->width / $destAR );
+				$srcY = round( ($this->height - $srcHeight) / 2 );
+			}
+		
+			$new->extentImage($width, $height, $destX, $destY);
+		}
+		
+		return $new;
+	}
+}

model/Image.php

@@ -12,6 +12,8 @@ class Image extends File {
 	const ORIENTATION_PORTRAIT = 1;
 	const ORIENTATION_LANDSCAPE = 2;
 	
+	static $backend = "GDBackend";
+	
 	static $casting = array(
 		'Tag' => 'HTMLText',
 	);
@@ -59,6 +61,14 @@ class Image extends File {
 	 */
 	public static $asset_preview_height = 200;
 	
+	public static function set_backend($backend) {
+		self::$backend = $backend;
+	}
+	
+	public static function get_backend() {
+		return self::$backend;
+	}
+	
 	/**
 	 * Set up template methods to access the transformations generated by 'generate' methods.
 	 */
@@ -195,32 +205,32 @@ class Image extends File {
 		return $this->getFormattedImage('SetRatioSize', $width, $height);
 	}
 	
-	public function generateSetRatioSize(GD $gd, $width, $height) {
-		return $gd->resizeRatio($width, $height);
+	public function generateSetRatioSize(Image_Backend $backend, $width, $height) {
+		return $backend->resizeRatio($width, $height);
 	}
 	
 	/**
 	 * Resize this Image by width, keeping aspect ratio. Use in templates with $SetWidth.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateSetWidth(GD $gd, $width) {
-		return $gd->resizeByWidth($width);
+	public function generateSetWidth(Image_Backend $backend, $width) {
+		return $backend->resizeByWidth($width);
 	}
 	
 	/**
 	 * Resize this Image by height, keeping aspect ratio. Use in templates with $SetHeight.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateSetHeight(GD $gd, $height){
-		return $gd->resizeByHeight($height);
+	public function generateSetHeight(Image_Backend $backend, $height){
+		return $backend->resizeByHeight($height);
 	}
 	
 	/**
 	 * Resize this Image by both width and height, using padded resize. Use in templates with $SetSize.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateSetSize(GD $gd, $width, $height) {
-		return $gd->paddedResize($width, $height);
+	public function generateSetSize(Image_Backend $backend, $width, $height) {
+		return $backend->paddedResize($width, $height);
 	}
 	
 	public function CMSThumbnail() {
@@ -229,38 +239,38 @@ class Image extends File {
 	
 	/**
 	 * Resize this image for the CMS. Use in templates with $CMSThumbnail.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateCMSThumbnail(GD $gd) {
-		return $gd->paddedResize($this->stat('cms_thumbnail_width'),$this->stat('cms_thumbnail_height'));
+	public function generateCMSThumbnail(Image_Backend $backend) {
+		return $backend->paddedResize($this->stat('cms_thumbnail_width'),$this->stat('cms_thumbnail_height'));
 	}
 	
 	/**
 	 * Resize this image for preview in the Asset section. Use in templates with $AssetLibraryPreview.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateAssetLibraryPreview(GD $gd) {
-		return $gd->paddedResize($this->stat('asset_preview_width'),$this->stat('asset_preview_height'));
+	public function generateAssetLibraryPreview(Image_Backend $backend) {
+		return $backend->paddedResize($this->stat('asset_preview_width'),$this->stat('asset_preview_height'));
 	}
 	
 	/**
 	 * Resize this image for thumbnail in the Asset section. Use in templates with $AssetLibraryThumbnail.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateAssetLibraryThumbnail(GD $gd) {
-		return $gd->paddedResize($this->stat('asset_thumbnail_width'),$this->stat('asset_thumbnail_height'));
+	public function generateAssetLibraryThumbnail(Image_Backend $backend) {
+		return $backend->paddedResize($this->stat('asset_thumbnail_width'),$this->stat('asset_thumbnail_height'));
 	}
 	
 	/**
 	 * Resize this image for use as a thumbnail in a strip. Use in templates with $StripThumbnail.
-	 * @return GD
+	 * @return Image_Backend
 	 */
-	public function generateStripThumbnail(GD $gd) {
-		return $gd->croppedResize($this->stat('strip_thumbnail_width'),$this->stat('strip_thumbnail_height'));
+	public function generateStripThumbnail(Image_Backend $backend) {
+		return $backend->croppedResize($this->stat('strip_thumbnail_width'),$this->stat('strip_thumbnail_height'));
 	}
 	
-	public function generatePaddedImage(GD $gd, $width, $height) {
-		return $gd->paddedResize($width, $height);
+	public function generatePaddedImage(Image_Backend $backend, $width, $height) {
+		return $backend->paddedResize($width, $height);
 	}
 
 	/**
@@ -313,15 +323,17 @@ class Image extends File {
 	public function generateFormattedImage($format, $arg1 = null, $arg2 = null) {
 		$cacheFile = $this->cacheFilename($format, $arg1, $arg2);
 		
-		$gd = new GD(Director::baseFolder()."/" . $this->Filename);
+		$backend = Injector::inst()->createWithArgs(self::$backend, array(
+			Director::baseFolder()."/" . $this->Filename
+		));
 		
-		if($gd->hasGD()){
+		if($backend->hasImageResource()) {
 
 			$generateFunc = "generate$format";		
 			if($this->hasMethod($generateFunc)){
-				$gd = $this->$generateFunc($gd, $arg1, $arg2);
-				if($gd){
-					$gd->writeTo(Director::baseFolder()."/" . $cacheFile);
+				$backend = $this->$generateFunc($backend, $arg1, $arg2);
+				if($backend){
+					$backend->writeTo(Director::baseFolder()."/" . $cacheFile);
 				}
 	
 			} else {
@@ -334,12 +346,12 @@ class Image extends File {
 	 * Generate a resized copy of this image with the given width & height.
 	 * Use in templates with $ResizedImage.
 	 */
-	public function generateResizedImage($gd, $width, $height) {
-		if(is_numeric($gd) || !$gd){
+	public function generateResizedImage(Image_Backend $backend, $width, $height) {
+		if(!$backend){
 			user_error("Image::generateFormattedImage - generateResizedImage is being called by legacy code"
-				. " or gd is not set.",E_USER_WARNING);
+				. " or Image::\$backend is not set.",E_USER_WARNING);
 		}else{
-			return $gd->resize($width, $height);
+			return $backend->resize($width, $height);
 		}
 	}
 
@@ -347,8 +359,8 @@ class Image extends File {
 	 * Generate a resized copy of this image with the given width & height, cropping to maintain aspect ratio.
 	 * Use in templates with $CroppedImage
 	 */
-	public function generateCroppedImage($gd, $width, $height) {
-		return $gd->croppedResize($width, $height);
+	public function generateCroppedImage(Image_Backend $backend, $width, $height) {
+		return $backend->croppedResize($width, $height);
 	}
 	
 	/**

model/Image_Backend.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * Image_Backend
+ * 
+ * A backend for manipulation of images via the Image class
+ *
+ * @package framework
+ * @subpackage filesystem
+ */
+interface Image_Backend {
+
+	/**
+	 * __construct
+	 *
+	 * @param string $filename = null
+	 * @return void
+	 */
+	public function __construct($filename = null);
+
+	/**
+	 * writeTo
+	 *
+	 * @param string $path
+	 * @return void
+	 */
+	public function writeTo($path);
+	
+	/**
+	 * set_default_quality
+	 *
+	 * @static
+	 * @param int $quality
+	 * @return void
+	 */
+	public static function set_default_quality($quality);
+	
+	/**
+	 * setQuality
+	 *
+	 * @param int $quality
+	 * @return void
+	 */
+	public function setQuality($quality);
+	
+	/**
+	 * setImageResource
+	 * 
+	 * Set the backend-specific resource handling the manipulations. Replaces Image::setGD()
+	 *
+	 * @param mixed $resource
+	 * @return void
+	 */
+	public function setImageResource($resource);
+	
+	/**
+	 * getImageResource
+	 * 
+	 * Get the backend-specific resource handling the manipulations. Replaces Image::getGD()
+	 *
+	 * @return mixed
+	 */
+	public function getImageResource();
+	
+	/**
+	 * hasImageResource
+	 *
+	 * @return boolean
+	 */
+	public function hasImageResource();
+
+	/**
+	 * resize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resize($width, $height);
+	
+	/**
+	 * resizeRatio
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resizeRatio($maxWidth, $maxHeight, $useAsMinimum = false);
+	
+	/**
+	 * resizeByWidth
+	 *
+	 * @param int $width
+	 * @return Image_Backend
+	 */
+	public function resizeByWidth($width);
+	
+	/**
+	 * resizeByHeight
+	 *
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function resizeByHeight($height);
+	
+	/**
+	 * paddedResize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function paddedResize($width, $height, $backgroundColor = "FFFFFF");
+	
+	/**
+	 * croppedResize
+	 *
+	 * @param int $width
+	 * @param int $height
+	 * @return Image_Backend
+	 */
+	public function croppedResize($width, $height);
+}

tests/model/GDImageTest.php

@@ -0,0 +1,28 @@
+<?php
+class GDImageTest extends ImageTest {
+	public function setUp() {
+		if(!extension_loaded("gd")) {
+			$this->markTestSkipped("The GD extension is required");
+			$this->skipTest = true;
+			parent::setUp();
+			return;
+		}
+	
+		parent::setUp();
+		
+		Image::set_backend("GDBackend");
+		
+		// Create a test files for each of the fixture references
+		$fileIDs = $this->allFixtureIDs('Image');
+		foreach($fileIDs as $fileID) {
+			$file = DataObject::get_by_id('Image', $fileID);
+			
+			$image = imagecreatetruecolor(300,300);
+
+			imagepng($image, BASE_PATH."/{$file->Filename}");
+			imagedestroy($image);
+		
+			$file->write();
+		}
+	}
+}

tests/model/ImageTest.php

@@ -8,9 +8,19 @@ class ImageTest extends SapphireTest {
 	
 	static $fixture_file = 'ImageTest.yml';
 	
+	protected $origBackend;
+	
 	public function setUp() {
+		if(get_class($this) == "ImageTest")
+			$this->skipTest = true;
+	
 		parent::setUp();
 		
+		if($this->skipTest)
+			return;
+		
+		$this->origBackend = Image::get_backend();
+	
 		if(!file_exists(ASSETS_PATH)) mkdir(ASSETS_PATH);
 
 		// Create a test folders for each of the fixture references
@@ -21,18 +31,28 @@ class ImageTest extends SapphireTest {
 			
 			if(!file_exists(BASE_PATH."/$folder->Filename")) mkdir(BASE_PATH."/$folder->Filename");
 		}
+	}
 	
-		// Create a test files for each of the fixture references
+	public function tearDown() {
+		Image::set_backend($this->origBackend);
+	
+		/* Remove the test files that we've created */
 		$fileIDs = $this->allFixtureIDs('Image');
 		foreach($fileIDs as $fileID) {
 			$file = DataObject::get_by_id('Image', $fileID);
-			$image = imagecreatetruecolor(300,300);
-		
-			imagepng($image, BASE_PATH."/$file->Filename");
-			imagedestroy($image);
-		
-			$file->write();
+			if($file && file_exists(BASE_PATH."/$file->Filename")) unlink(BASE_PATH."/$file->Filename");
 		}
+
+		/* Remove the test folders that we've crated */
+		$folderIDs = $this->allFixtureIDs('Folder');
+		foreach($folderIDs as $folderID) {
+			$folder = DataObject::get_by_id('Folder', $folderID);
+			if($folder && file_exists(BASE_PATH."/$folder->Filename")) {
+				Filesystem::removeFolder(BASE_PATH."/$folder->Filename");
+			}
+		}
+		
+		parent::tearDown();
 	}
 	
 	public function testGetTagWithTitle() {
@@ -61,26 +81,6 @@ class ImageTest extends SapphireTest {
 		$this->assertEquals($expected, $actual);
 	}
 	
-	public function tearDown() {
-		/* Remove the test files that we've created */
-		$fileIDs = $this->allFixtureIDs('Image');
-		foreach($fileIDs as $fileID) {
-			$file = DataObject::get_by_id('Image', $fileID);
-			if($file && file_exists(BASE_PATH."/$file->Filename")) unlink(BASE_PATH."/$file->Filename");
-		}
-
-		/* Remove the test folders that we've crated */
-		$folderIDs = $this->allFixtureIDs('Folder');
-		foreach($folderIDs as $folderID) {
-			$folder = DataObject::get_by_id('Folder', $folderID);
-			if($folder && file_exists(BASE_PATH."/$folder->Filename")) {
-				Filesystem::removeFolder(BASE_PATH."/$folder->Filename");
-			}
-		}
-		
-		parent::tearDown();
-	}
-	
 	public function testMultipleGenerateManipulationCalls() {
 		$image = $this->objFromFixture('Image', 'imageWithoutTitle');
 		

tests/model/ImagickImageTest.php

@@ -0,0 +1,29 @@
+<?php
+class ImagickImageTest extends ImageTest {
+	public function setUp() {
+		if(!extension_loaded("imagick")) {
+			$this->markTestSkipped("The Imagick extension is not available.");
+			$this->skipTest = true;
+			parent::setUp();
+			return;
+		}
+		
+		parent::setUp();
+		
+		Image::set_backend("ImagickBackend");
+		
+		// Create a test files for each of the fixture references
+		$fileIDs = $this->allFixtureIDs('Image');
+		foreach($fileIDs as $fileID) {
+			$file = DataObject::get_by_id('Image', $fileID);
+			
+			$image = new Imagick();
+			
+			$image->newImage(300,300, new ImagickPixel("white"));
+			$image->setImageFormat("png");
+			$image->writeImage(BASE_PATH."/{$file->Filename}");
+			
+			$file->write();
+		}
+	}
+}