SailsJs :: Keep sessions with mocha - session

Question

I need to keep my sessions alive between to mocha requests.
After login, I store in the user id in the express session object :
req.session.user = user.id ;
On a browser, the session is kept without any question needed (tested with Postman).
But, I need to make my REST API reachable for an external app, and I would like not to have to authenticate for each request on my API.
Is there a way for me to be able to keep the session between two requests in mocha or via the client app of the API ?
Thanks by advance.
English is not my mother langage, I may have not been as clear as I would have wanted. So I can provide any information you might need to help me.
UPDATE
Thanks to Alberto, I figured out how to keep my sessions alive in Mocha with Supertest.
An agent keeps his sessions until its it destroyed, or the logout is requested.
What needs to be donne is use the same agent to login and for requesting the API.
What I did is :
var request = require('supertest'),
should = require('chai').should();
describe('ImageController', function() {
var agent = request.agent('http://localhost:1337') ;
before(function(done){
agent
.post('/auth/local')
.send({identifier: 'email', password: 'password'})
.end(function(err, res) {
if (err) return done(err);
done();
});
})
after(function(done){
agent
.get('/logout')
.end(function(err, res) {
if (err) return done(err);
done();
});
})
describe('POST /image', function(){
it('should return 201 for image creation after login', function (done) {
agent
.post('/image')
.send({name: 'test.png'})
.end(function (err, res) {
if (err) return done(err);
res.status.should.be.equal(201);
done();
});
});
});
});

Answer 1

Use supertest agent feature how can store cookies.
Has one example in supertest docs: https://github.com/tj/supertest#example
Sails.js example with super test example: https://github.com/albertosouza/sails-test-example
Test file example snipplet:
var request = require('supertest');
var assert = require('assert');
var authenticated;
describe('Example test', function() {
// use efore all to create custom stub data
before(function(done) {
// use supertest.agent for store cookies ...
// logged in agent
// after authenticated requests
//login and save one agent with your session cookies. Ex:
authenticated = request.agent(sails.hooks.http.app);
authenticated.post('/auth/login')
.send({
email: user.email,
password: user.password
})
.end(function(err) {
done(err);
});
});
describe('authenticated requests', function(){
it ('should access one protected route', function(done){
// use the authenticated agent to do authenticated requests
authenticated.get('/protected')
.expect(200)
.end(function(err, res) {
if (err) return done(err);
console.log('response:', res.text);
done();
});
});
});
});