sinon

So, this was quite an interesting problem I have been running into. I am currently building a backbone.js - Rails app. Generally just building this for learning purposes. I am (like any good rails dev) doing my best at TDD/BDD and I ran into a problem with capybara. I have an integration spec that merely tests root_path works (Backbone history starts, displays initial information, etc...). require 'spec_helper' describe "RentalProperties", js: true do describe "GET /" do it "should show a list of properties" do visit root_path eventually{page.should have_content("Something")} end end end I am

If I use sinon with typescript then how do I cast the sinon mock to an instance of my object? For instance a SinonMock would be returned but my controller under test may require a specific service passed in to its constructor. var myServiceMock: MyStuff.MyService = <MyStuff.MyService (sinon.mock(MyStuff.MyService)); controllerUnderTest = new MyStuff.MyController(myServiceMock, $log); Can sinon be used with Typescript? You may need to use an <any> type assertion to make the type wide before you narrow it to your specific type: var myServiceMock: MyStuff.MyService = <MyStuff.MyService> <any>

I would like to verify that bar() is called inside foo() from my unit test. I figured that Sinon spies might be suitable, but I don't know how to use them. Is there any way to check that the method is called? Perhaps even extracting the arguments used in the bar() call? var spy = sinon.spy(foo); function foo(){ bar(1,2,3); } function bar(){ } foo(); // what to do with the spy? http://jsfiddle.net/8by9jg07/ In your case, you are trying to see if bar was called, so you want to spy bar rather than foo . As described in the doc : function bar(x,y) { console.debug(x, y); } function foo(z) { bar(z,

I am trying to stub the mongoose dependency used in this object: 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; Using the answer for this question , I've tried doing this: mongoose = require 'mongoose' sinon.stub mongoose.Model, 'save' But I got the error: TypeError: Attempted to wrap undefined property save as function I also tried this: sinon

I'm trying to get better at unit testing my JavaScript. I have the following code: var categoryVal = $('#category').val(); if (categoryVal === '') { doSomething(); } My test runner doesn't have the #category input on the page, so how would I stub/mock out the jQuery selector here? I've looked at both the jasmin and sinon documentation, but can't figure out how to get them to work here, since their stubs operate on objects, which $ is not. Andreas Köberle The problem here is that $() is a function that returns an object with the method val() . So you have to stub $() to return a stubbed object

I am writing some unit tests for node.js code and I use Sinon to stub function calls via var myFunction = sinon.stub(nodeModule, 'myFunction'); myFunction.returns('mock answer'); The nodeModule would look like this module.exports = { myFunction: myFunction, anotherF: anotherF } function myFunction() { } function anotherF() { myFunction(); } Mocking works obviously for use cases like nodeModule.myFunction() , but I am wondering how can I mock the myFunction() call inside anotherF() when called with nodeModule.anotherF() ? You can refactor your module a little. Like this. var service = {