QUnit.test('options#zoom', function (assert) { var done = assert.async(); var util = window.Util; var image = util.createImage(); assert.expect(3); return new Cropper(image, { ready: function () { var cropper = this.cropper; cropper.zoom(0.1); done(); }, zoom: function (e) { assert.ok(e.detail.ratio > 0); assert.ok(e.detail.oldRatio > 0); assert.ok(e.detail.ratio > e.detail.oldRatio); } }); }); QUnit.test('options#zoom: default prevented', 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 canvasData = cropper.getCanvasData(); assert.deepEqual(cropper.zoom(0.1).getCanvasData(), canvasData); done(); }, zoom: function (e) { e.preventDefault(); } }); });