Fix tests rewriting `logo.png`

src/image.js

@@ -65,6 +65,9 @@ image.resizeImage = function (data, callback) {
 					}
 				},
 				function (image, next) {
+					if (data.write === false) {
+						return next();
+					}
 					image.write(data.target || data.path, next);
 				}
 			], function (err) {

src/user/picture.js

@@ -57,7 +57,8 @@ module.exports = function (User) {
 							path: picture.path,
 							extension: extension,
 							width: imageDimension,
-							height: imageDimension
+							height: imageDimension,
+							write: false,
 						}, next);
 					},
 					function (next) {