javascript - spy 单元测试失败。说 spy 从未被称为

Question

这是我正在测试的代码

eventsApp.factory('userData', ['userResource', function(userResource){
    return{
    getUser: function(userName, callback){
        return userResource.get({userName:userName}, function(user){
        if(callback)
        callback(user);
        });

    };
}]);

这是 Jasmine 测试

describe('userData', function(){
    var mockUserResource;

    beforeEach(module('eventsApp'));

    beforeEach(function(){
        mockUserResource = {get: function(){} };

        module(function($provide){
            $provide.value('userResource', mockUserResource);
        });
    });

    it('should make a call to userResource.get with provided userName', inject(function(userData){

        userData.getUser('Bob');
        spyOn(mockUserResource, 'get');
        expect(mockUserResource.get).toHaveBeenCalledWith({userName:'Bob'});
    }));
});

为什么会失败？它说

"Expected spy get to have been called with [ { userName : 'Bob' } ] but it was never called".

.toHaveBeenCalled() 也失败了。

Answer 1

难道不应该在执行 GET 请求之前设置 spy 吗？

it('should make a call to userResource.get with provided userName', inject(function(userData){
    //arrange
    spyOn(mockUserResource, 'get');

    //act
    userData.getUser('Bob');

    //assert
    expect(mockUserResource.get).toHaveBeenCalledWith({userName:'Bob'});
}));

编辑 Arrange-Act-Assert pattern ;)