尝试包装已经包装的sendRequest

时间:2013-06-24 16:32:28

标签: unit-testing backbone.js jasmine sinon

我正在使用Jasmine为我的Backbone缓存编写单元测试,并尝试使用Sinon.js模拟函数响应。对于不同的测试,我希望发生不同的事情,所以我在每次测试之前创建一个模拟并在之后删除它,然后在测试本身内填充expects行为。但是,我收到错误,测试失败。

这是我的规范,仅涉及相关测试(其他测试不使用模拟):

describe("mysite.core.Cache.XFooInfo", function() {
    var fnMock;

    beforeEach(function() {
        fnMock = sinon.mock(fn);
    });

    afterEach(function() {
        delete fnMock;
    });

    it("should make a request after function fooCreated called", function() {
      fnMock.expects("sendRequest").once().withExactArgs("ModuleFoo", "getFoo", ["1000"]);

      events.trigger("fooCreated", [{Args:[test.data.XFooInfo]}]);
      fnMock.verify();
    });
 });
describe("mysite.core.Cache.XFooBarInfo", function() {
    var fnMock;

    beforeEach(function() {
        fnMock = sinon.mock(fn);
    });

    afterEach(function() {
        delete fnMock;
    });

    it("should make a request after function booUpdated called", function() {
      var booCopy = $.extend(true, {}, test.data.XBooInfo);

      booCopy[0].Args[0].FooID = "12345";
      fnMock.expects("sendRequest").once().withExactArgs("ModuleFoo", "getFoo", ["12345"]);

      events.trigger("booUpdated", booCopy);
      fnMock.verify();
    });
 });

第一次测试工作正常并通过。但是,第二次测试给出了这个错误:

TypeError: Attempted to wrap sendRequest which is already wrapped
    at Object.wrapMethod (https://localhost:8443/mysite/web/tests/libs/sinon-1.7.1.js:528:23)
    at Object.expects (https://localhost:8443/mysite/web/tests/libs/sinon-1.7.1.js:2092:27)
    at null.<anonymous> (https://localhost:8443/mysite/web/shasta-cList-tests/spec/CacheSpec.js:909:15)
    at jasmine.Block.execute (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:1024:15)
    at jasmine.Queue.next_ (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:2025:31)
    at jasmine.Queue.start (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:1978:8)
    at jasmine.Spec.execute (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:2305:14)
    at jasmine.Queue.next_ (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:2025:31)
    at jasmine.Queue.start (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:1978:8)
    at jasmine.Suite.execute (https://localhost:8443/mysite/web/tests/libs/jasmine-1.2.0.rc3/jasmine.js:2450:14)

我在Sinon.js文档中找不到任何东西告诉我我做错了什么。我知道verify对它所嘲笑的所有函数都做了restore我认为这足以让我为同一个函数写一个新的expects行为,但显然我是错。

这样做的正确方法是什么?

2 个答案:

答案 0 :(得分:2)

好的,所以上周五在这个问题上花了2个小时没有运气,我在发布这个问题后20分钟就知道了。将var fn.sendRequest = function(module, fnName, args) {};添加到beforeEach函数可修复所有失败的测试。

答案 1 :(得分:0)

这个也适用,而不是输入:

var fn.sendRequest = function () { };