Question

我试图使用mocha注入模拟进行测试。但看起来模拟没有被拾取，测试仍然使用来自服务器的真实数据。我试图从foursquare获取数据。

这是我的代码。

var foursquare = require('foursquarevenues'),
    Promise = require('promise'),
    _ = require('underscore');

var Foursquare = function(client_id, client_secret) {
    this.the_4sqr_lib = foursquare(client_id, client_secret);

};
Foursquare.prototype.getVenue = function(id) {
    var self = this;
    return new Promise(function(resolve, reject) {
        self.the_4sqr_lib.getVenue({'venue_id' : id}, function(error, response) {
            if(error) {
                reject(error);
            }
            var venueData = response.response.venue;
            var firstPhoto =  venueData.photos.groups[0].items[0];
            var theVenue = {
                id: venueData.id,
                name: venueData.name,
                photo: firstPhoto.prefix + firstPhoto.width + 'x' + firstPhoto.height + firstPhoto.suffix,
                url: venueData.canonicalUrl
            };
            resolve(theVenue);  
        });
    });
    };

module.exports = Foursquare;

这是我的考试

var rewire = require("rewire"),
    Foursquare = rewire('../../lib/foursquare.js');

        var client_id, client_secret, foursquare;
        beforeEach(function() {
            client_id = process.env.FOURSQUARE_CLIENT_ID;
            client_secret = process.env.FOURSQUARE_CLIENT_SECRET;
            foursquare = new Foursquare(client_id, client_secret);
        });
        it('should get venue without photo', function(done) {
            var mockFoursquare = {
                getVenue : function(id, cb) {
                    var response = {
                        response : {
                            response : {
                                venue : {
                                    photos : {
                                        count:0,
                                        groups : []
                                    }
                                }
                            }
                        }
                    }
                    cb(null, response);
                }
            };

            Foursquare.__set__('foursquarevenues', mockFoursquare);

            var venue = foursquare.getVenue('430d0a00f964a5203e271fe3');
            venue.then(function(venue) {
            venue.id.should.equal('');
            venue.name.should.equal('');
            venue.photo.should.equal('');
            venue.url.should.equal('');
            done();
            }).catch(done);
        });

我希望测试因undefined而失败，但它仍然可以获得真实数据。

Answer 1

使用var self = this;时遇到了同样的问题。像self.someMethod()这样的方法并没有被嘲笑。

我通过分配没有重新连接的模拟部分解决了它：

MyModule = rewire('../lib/MyModule');
MyModule.__set__({"someMethodNotUsingSelf": function(){...}});
MyModule.someMethodThatUsesSelf = function() { //some mock code };
someValue.should.equal('something');
//...

希望它有所帮助！

为什么重新连接而不是在nodejs中注入mock进行测试？

1 个答案: