blocks|key|2194211|text|我分析过猫鼬的来源，认为这是不可能的。保存函数不是在模型上定义的，而是由钩式npm动态生成的，它支持前后中间件功能。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2194212|但是，可以对实例进行存根保存，如：|2194213|page+=+new+Page();
sinon.stub(page,+'save',+function(cb){+cb(null)+})|code-block|syntax|javascript|2194214|更新:退出pageModel|2194215|首先，需要将pageModel设置为Page+(this.pageModel+=+xxx)自己的属性，从而使其可访问。然后，您可以像下面所示那样对其进行存根处理：|style|CODE|2194216|mongoose+=+require('mongoose');
mongoose.connect('mongodb://localhost/test');
mongoose.set('debug',+true);

schema+=+new+mongoose.Schema({title:+String});
mongoose.model('Page',+schema);


var+Page+=+function(db)+{

++var+mongoose+=+db+%7C%7C+require('mongoose');

++if(!this+instanceof+Page)+{
++++return+new+Page(db);
++}

++var+PageSchema+=+mongoose.model('Page');
++this.pageModel+=+new+PageSchema();

++function+save(params,+cb)+{
++++console.log("page.save");
++++this.pageModel.set(params);
++++this.pageModel.save(function+(err,+product)+{
++++++console.log("pageModel.save");
++++++cb(err,+product);
++++});
++}

++Page.prototype.save+=+save;
};


page+=+new+Page();

sinon+=+require('sinon');
sinon.stub(page.pageModel,+'save',+function(cb){
++cb("fake+error",+null);
});

page.save({+title:+'awesome'+},+function+(err,+product)+{
++if(err)+return+console.log("ERROR:",+err);
++console.log("DONE");
});|2194217|entityMap|0|LINK|mutability|MUTABLE|url|https://npmjs.org/package/hooks|1|http://mongoosejs.com/docs/middleware.html^0|10|5|0|1E|5|1|0|0|0|0|6|9|I|4|O|K|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]|$A|16|B|17|1|18]]|C|$]]|$1|D|3|E|5|6|7|19|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1A|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1B|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|1C|8|@$A|1D|B|1E|O|P]|$A|1F|B|1G|O|P]|$A|1H|B|1I|O|P]]|9|@]|C|$]]|$1|Q|3|R|5|H|7|1J|8|@]|9|@]|C|$I|J]]|$1|S|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]]]

I've analysed mongoose source and don't think this is possible. Save function is not defined on model, but dynamically generated by <a href="https://npmjs.org/package/hooks">hooks npm</a> which enables <a href="http://mongoosejs.com/docs/middleware.html">pre/post middleware</a> functionality.

However, you can stub save on instance like this:

<pre><code>page = new Page();
sinon.stub(page, 'save', function(cb){ cb(null) })
</code></pre>

<hr>

UPDATE: Stubbing out pageModel

First, you need to make <code>pageModel</code> accessible by setting it as own property of <code>Page</code> (<code>this.pageModel = xxx</code>). Then, you can stub it like shown bellow:

<pre><code>mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
mongoose.set('debug', true);

schema = new mongoose.Schema({title: String});
mongoose.model('Page', schema);


var Page = function(db) {

 var mongoose = db || require('mongoose');

 if(!this instanceof Page) {
 return new Page(db);
 }

 var PageSchema = mongoose.model('Page');
 this.pageModel = new PageSchema();

 function save(params, cb) {
 console.log("page.save");
 this.pageModel.set(params);
 this.pageModel.save(function (err, product) {
 console.log("pageModel.save");
 cb(err, product);
 });
 }

 Page.prototype.save = save;
};


page = new Page();

sinon = require('sinon');
sinon.stub(page.pageModel, 'save', function(cb){
 cb("fake error", null);
});

page.save({ title: 'awesome' }, function (err, product) {
 if(err) return console.log("ERROR:", err);
 console.log("DONE");
});
</code></pre>

blocks|key|873238|text|我建议您使用mock而不是stub，这将检查原始对象上真正存在的方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|873239|var+page+=+new+Page();

//+If+you+are+using+callbacks,+use+yields+so+your+callback+will+be+called
sinon.mock(page)
++.expects('save')
++.yields(someError,+someResult);

//+If+you+are+using+Promises,+use+'resolves'+(using+sinon-as-promised+npm)+
sinon.mock(page)
++.expects('save')
++.resolves(someResult);|code-block|syntax|javascript|873240|看看西农猫鼬。您可以期望链式方法(在Mongoose模型和文档上都是如此)只需几行代码(在回购方面有一些有用的例子)。|873241|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/gaguirre/sinon-mongoose^0|6|4|D|4|0|0|2|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|M|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

I recommend you to use <code>mock</code> instead of <code>stub</code>, that will check the method really exists on the original object.

<pre><code>var page = new Page();

// If you are using callbacks, use yields so your callback will be called
sinon.mock(page)
 .expects('save')
 .yields(someError, someResult);

// If you are using Promises, use 'resolves' (using sinon-as-promised npm) 
sinon.mock(page)
 .expects('save')
 .resolves(someResult);
</code></pre>

Take a look to <a href="https://github.com/gaguirre/sinon-mongoose" rel="noreferrer" title="sinon-mongoose">sinon-mongoose</a>. You can expects chained methods (on both, Mongoose Models and Documents) with just a few lines (there are working examples on the repo).

blocks|key|2194264|text|page+=+new+Page();
sinon.stub(page,+'save',+function(cb){+cb(null)+})|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2194265|不推荐使用上述代码。|unstyled|2194266|请试着为你的存根添加假功能如下-|2194267|sinon.stub(page,+'save').callsFake(function(cb){
++++++//+do+your+Fake+code
++++++cb(null)
})|2194268|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$B|C]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>page = new Page();
sinon.stub(page, 'save', function(cb){ cb(null) })
</code></pre>

Above code is deprecated.

Please try to add fake function for your stub as below -

<pre><code>sinon.stub(page, 'save').callsFake(function(cb){
 // do your Fake code
 cb(null)
})
</code></pre>

I am trying to stub the mongoose dependency used in this object:

<pre><code>var Page = function(db) {

 var mongoose = db || require('mongoose');

 if(!this instanceof Page) {
 return new Page(db);
 }

 function save(params) {
 var PageSchema = mongoose.model('Page');

 var pageModel = new PageSchema({
 ...
 });

 pageModel.save();
 }

 Page.prototype.save = save;
}

module.exports = Page;
</code></pre>

Using the answer for <a href="https://stackoverflow.com/questions/11318972/stubbing-a-mongoose-model-with-sinon">this question</a>, I've tried doing this:

<pre><code>mongoose = require 'mongoose'
sinon.stub mongoose.Model, 'save'
</code></pre>

But I got the error: 

TypeError: Attempted to wrap undefined property save as function

I also tried this:

<pre><code>sinon.stub PageSchema.prototype, 'save'
</code></pre>

And then I got the error:

TypeError: Should wrap property of object

Can anyone help with this? What am I doing wrong?

Stubbing a Mongoose model using Sinon

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试图对这个对象中使用的猫鼬依赖项进行存根：var Page = function(db) {    var mongoose = db || require('mongoose');    if(!this instanceof Page) {        return new Page(db);    }    ...

问用Sinon固执猫鼬模型
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