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Mocking a Window object for unit-testing purposes
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| function bindEvents() { | |
| news.$(global).on('resize', handleResize); | |
| } | |
| function init(windowMock, newsMock) { | |
| global = windowMock || window; | |
| news = newsMock || newsModule; | |
| } |
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| var mocks = { | |
| resizeCalled: false, | |
| createFakeWindow: function(width, height) { | |
| var module = this; | |
| return { | |
| document: { | |
| documentElement: { | |
| clientWidth: width, | |
| clientHeight: height | |
| } | |
| }, | |
| resizeTo: function(width, height) { | |
| this.document.documentElement = { | |
| clientWidth: width, | |
| clientHeight: height | |
| }; | |
| } | |
| }; | |
| }, | |
| fireResizeEvent: function() { | |
| this.handler(); | |
| }, | |
| news: { | |
| $: function(element) { | |
| return { | |
| on: function(event, handler) { | |
| if (event === 'resize') { | |
| mocks.resizeCalled = true; | |
| } | |
| mocks.handler = handler; | |
| } | |
| }; | |
| } | |
| } | |
| }; | |
| it('should bind to `resize` event on `init`', function(){ | |
| var fakeWindow = mocks.createFakeWindow(320, 480); | |
| deviceInspector.init(fakeWindow, mocks.news); | |
| expect(mocks.resizeCalled).toBeTruthy(); | |
| }); | |
| it('should only publish `device` event when device type changes', function(){ | |
| var fakeWindow = mocks.createFakeWindow(1008, 1024), | |
| device = deviceInspector.init(fakeWindow, mocks.news); | |
| fakeWindow.resizeTo(960, 1024); | |
| mocks.fireResizeEvent(); | |
| fakeWindow.resizeTo(320, 480); | |
| mocks.fireResizeEvent(); | |
| }); |
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