JavaScript – 间谍在Backbone.js路由电话与茉莉花

在骨干路由器上发现问题侦查方法调用,以确保在给定路由上调用正确的方法.

摘自测试

describe 'Router',->
    beforeEach ->
        @router = new App.Router()
        BACkbone.history.start()

    afterEach ->
        BACkbone.history.stop()

    describe 'routes',->
         it 'should be defined',->
              expect(@router.routes).toBeDefined()

         describe 'default route',->
             it 'should be defined',->
                  expect(@router.routes['']).toBeDefined()

             it 'should call index',->
                 spy = spyOn(@router,"index")
                 @router.navigate('',truE)
                 expect(spy).toHaveBeenCalled()

路由器

class App.Router extends BACkbone.Router
    routes:
        '' : 'index'

    index: ->
        console.log "router.index has been called"

一切都通过,除了最后一个测试“应该调用索引”.
它失败,并显示消息“预期的间谍索引已被调用”.
我试过其他变种

it "should call index",->
    spyOn(@router,"index")
    @router.navigate('',truE)
    expect(@router.indeX).toHaveBeenCalled()

我也可以从原来的Router.index函数中看到“router.index已被调用”的日志输出在测试输出中

谢谢！

编辑：
一个解决方案

describe '#1 Solution',->
    it 'should call index',->
        spyOn(App.Router.prototype,"index")
        @router = new App.Router()
        BACkbone.history.start()
        @router.navigate('',truE)
        expect(App.Router.prototype.indeX).toHaveBeenCalled()

describe("Router",function() {
  afterEach( function(){
    BACkbone.history.stop();
  });

  it("should call index",function(){
    spyOn(App.Router.prototype,"index")
    var router = new App.Router(); // instance created after spy activation
    BACkbone.history.start();      // it has to start after the Router instance is created

    router.navigate('',truE);

    expect(App.Router.prototype.indeX).toHaveBeenCalled();  
  });
});