resizeExact function

lib/args.js

@@ -57,7 +57,7 @@ module.exports = function (proto) {
    *    img.append(img).append(true) gm convert src img +append
    *    img.append(img).append(true) gm convert src img +append
    *    img.append(img).background('#222) gm convert src img -background #222 +append
-   *    img.append([img1,img2...],true) 
+   *    img.append([img1,img2...],true)
 
    * @param {String} or {Array} [img]
    * @param {Boolean} [ltr]
@@ -710,7 +710,7 @@ module.exports = function (proto) {
     var geometry,
       wIsValid = Boolean(w || w === 0),
       hIsValid = Boolean(h || h === 0);
-    
+
     if (wIsValid && hIsValid) {
       geometry = w + "x" + h + options
     } else if (wIsValid) {
@@ -726,6 +726,11 @@ module.exports = function (proto) {
     return this.out("-resize", geometry);
   }
 
+  proto.resizeExact = function resize (w, h) {
+    var options = "!";
+    return proto.resize.apply(this, [w, h, options]);
+  }
+
   // http://www.graphicsmagick.org/GraphicsMagick.html#details-scale
   proto.scale = function scale (w, h, options) {
     options = options || "";

test/resizeWrong.js

@@ -24,7 +24,21 @@ module.exports = function (_, dir, finish, gm) {
         gm(name)
           .size(function (err, size) {
             if (err) return finish(err);
-            if (size.width !== width) return finish("Wrong resizing on requested:" + width + ", resized:" + size.width);
+            if (size.width !== width) {
+              gm(original)
+                .resizeExact(width)
+                .write(name, function (err) {
+                  if (err) return finish(err);
+
+                  gm(name)
+                    .size(function (err, size) {
+                      if (err) return finish(err);
+                      if (size.width !== width) {
+                        return finish("Wrong resizing on requested:" + width + ", resized:" + size.width);
+                      }
+                    });
+                });
+            }
 
             if (cb) return cb();
             resize(widths[index], index);