用 proxyquire 模拟 MongoDB

Question

我想模拟 MongoDB 对 proxyquire 的依赖通过在我的测试中这样做：

var proxyquire = require('proxyquire');
var controller = path.resolve('.path/to/controller/file.js');

在每个语句之前的中：

mocked_mongoose = { isMocked: true, model: function(name, schema, collection, skipInit) { return { find: function(conditions, projection, options, callback) { console.log('callback find'); return callback(); }, save: function(options, fn) { console.log('callback save'); return callback(); }, findOne: function(conditions, projection, options, callback) { console.log('callback find one'); var model = mongoose.model(name); var fakeModel = fakery.fake(model); return callback(null, fakemodel); } } } }; proxyquire(controller, { 'mongoose': mocked_mongoose });

然后当我去控制器做 console.log(mongoose.isMocked) 我没有定义，如果我打印 mongoose.model.toString() 似乎猫鼬方法没有被覆盖。

我跟进 this article 并尝试实现相同的逻辑，但我没有得到相同的结果。

任何帮助将不胜感激，谢谢！

Answer 1

我最终改变了我定义模拟猫鼬对象的方式，以完全匹配我想在 mt 案例中测试的场景：

第一个模型实例化

var Model = mongoose.model('SchemaDef');
var other = Model({
 _id:'someId'
 name'Some other fields'
});

型号搜索：

Model.findOne(query, callback);

这个版本是如何工作的：

'use strict';
var factory = require('factory-girl');
var mongoose = require('mongoose');

    function viewModel(name){
        function constructor(obj){
            if(obj){
                obj.find = constructor.find;
                obj.save = constructor.save;
                obj.findOne = constructor.findOne;
            }
            return obj;

        };
        constructor.isMocked = true;
        constructor.find = function(query, callback){
            factory.build(name, function(err, mockedModel){
                return callback(null,[mockedModel]);
            });

        };

        constructor.save = function(callback){
            factory.build(name, function(err, mockedModel){
                return callback(null,[mockedModel]);
            });
        };

        constructor.findOne=function(query,callback){
            factory.build(name, function(err, mockedModel){
                return callback(null,mockedModel);
            });
        };

        return constructor;
    };

module.exports = {
    model:function(name){
        factory.define(name, mongoose.model(name));
        return viewModel(name);
    }
};

用 proxyquire 模拟 MongoDB

mocking MongoDB with proxyquire

javascript

unit-testing

mongodb

node.js

proxyquire