QUnit.test('methods#scaleX', function (assert) { var done = assert.async(); var util = window.Util; var image = util.createImage(); assert.expect(1); return new Cropper(image, { ready: function () { var cropper = this.cropper; var imageData = cropper.scaleX(-1).getImageData(); assert.strictEqual(imageData.scaleX, -1); done(); } }); });