Mocking using mocha in NodeJs

Question

How can I mock a client and a server in Mocha using NodeJs. Specifically, I have the following code:

app.post ('path name', function (req, res) {    // Some Action    res.send(response);  }); 

I want to mock the req, res parameters and test res (status, header, message).

Answer 1

Mocha itself doesn't provide mock/stub/spy type functionality. Sinon is a popular library that does. The home page includes examples of testing ajax as well as their Fake XMLHTTPRequest object.