}
            assertImageSize(outputFile, 100, 66);

            imagePath = "thumbnail/600x400.gif";
            try (ImageInputStream input = ImageIO.createImageInputStream(classLoader.getResourceAsStream(imagePath))) {
                generator.saveImage(input, outputFile);
            }
            assertImageSize(outputFile, 100, 66);

            imagePath = "thumbnail/600x400.jpg";