How do i test my express app with mocha?

found an alternative in connect.js tests suites

They are using supertest to test a connect app without binding the server to any port and without using mock-ups.

Here is an excerpt from connect’s static middleware test suite (using mocha as the test runner and supertest for assertions)

var connect = require('connect');

var app = connect();
app.use(connect.static(staticDirPath));

describe('connect.static()', function(){
  it('should serve static files', function(done){
    app.request()
    .get('/todo.txt')
    .expect('contents', done);
  })
});

This works for express apps as well