old_contents: /*global describe, it */
  'use strict';
  
  var assert = require('assert');
  var imagemin = require('../imagemin');
  var path = require('path');
  
  describe('Imagemin.optimize()', function () {
      it('should minify a GIF image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.gif');
          var dest = path.join(__dirname, 'tmp/test.gif');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
      it('should minify a JPEG image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.jpg');
          var dest = path.join(__dirname, 'tmp/test.jpg');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
      it('should minify a PNG image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.png');
          var dest = path.join(__dirname, 'tmp/test.png');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
  });
  
  
new_contents: /*global describe, it */
  'use strict';
  
  var assert = require('assert');
  var imagemin = require('../imagemin');
  var path = require('path');
  
  describe('Imagemin.optimize()', function () {
      it('should minify a GIF image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.gif');
          var dest = path.join(__dirname, 'tmp/test.gif');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
      it('should minify a JPEG image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.jpg');
          var dest = path.join(__dirname, 'tmp/test.jpg');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
      it('should minify a PNG image', function (cb) {
          var src = path.join(__dirname, 'fixtures/test.png');
          var dest = path.join(__dirname, 'tmp/test.png');
  
          imagemin(src, dest, function () {
              assert(dest > src);
              cb();
          });
      });
  });
  
subject: Remove empty line