Getting random results on Travis - node.js

Question

My tests gives random results on Travis. Here are the logs where my tests did fail on Travis:
https://travis-ci.org/superzaky/node-portfolio-zaky/builds/149718369
And here are the logs where my tests did pass on Travis:
https://travis-ci.org/superzaky/node-portfolio-zaky/builds/149560005
Both branches contain the exact same code.
And on my computer I can also make the tests pass link to screenshot: http://i.imgur.com/zXOINsD.png
I had also cloned my repository on my laptop. And there the tests also pass.. I suspect it has something to do with the way I had written
my tests in 100-Login.js:
require('../utils');
require('events').EventEmitter.prototype._maxListeners = 100;
var supertest = require("supertest");
var should = require("should");
var assert = require('chai').assert;
var app = require('../../app');
// This agent refers to PORT where our program is running.
var server = supertest.agent(app);
// UNIT test begin
describe("A user logs in", function () {
it('should create a SINGLE session on /api/auth/login POST', function (done) {
//calling LOGIN api
server
.post('/api/auth/login')
.send({
username: "jimmy",
password: "open"
})
.expect("Content-type", /json/)
.expect(200)
.end(function (err, res) {
var data = {
_id: "000000000000000000000001",
name: "Jimmy Doe",
username: "jimmy",
admin: false
};
res.status.should.equal(200);
assert.deepEqual(res.body, data);
done();
});
});
it('should display a SINGLE session on /api/auth/ GET', function (done) {
//We check if a session is created by sending a GET request to /api/auth
server
.get('/api/auth/')
.expect("Content-type", /json/)
.expect(200)
.end(function (err, res) {
var data = {
_id: "000000000000000000000001",
name: "Jimmy Doe",
username: "jimmy",
admin: false
};
res.status.should.equal(200);
assert.deepEqual(res.body, data);
done();
});
});
it('should delete a SINGLE session on /api/auth/logout GET', function (done) {
//We check if a session is created by sending a GET request to /api/auth
server
.get('/api/auth/logout')
.expect("Content-type", /json/)
.expect(200)
.end(function (err, res) {
var data = "Successfully logged out";
res.status.should.equal(200);
assert.deepEqual(res.body, data);
done();
});
});
it('should NOT display a SINGLE session on /api/auth/ GET', function (done) {
//We check if a session is created by sending a GET request to /api/auth
server
.get('/api/auth/')
.expect("Content-type", /json/)
.expect(404)
.end(function (err, res) {
var data = "Session not found";
res.status.should.equal(404);
assert.deepEqual(res.body, data);
done();
});
});
});
require('events').EventEmitter.prototype._maxListeners = 0;
And here is the actual code that made the tests pass link: https://github.com/superzaky/node-portfolio-zaky/blob/travis/controllers/AuthController.js
But that looks fine to me. Anyone that maybe has a clue on how to fix this problem?

Answer 1

You should check what's in your local database.
Based on your other tests, which initially register a user with username = john (see this test, line 20), there will be no user with username = jimmy, which is what you use as the username credential when POSTing to /api/auth/login in the test that fails (see this test, line 18).
The tests that pass on your local machine probably pass because you also have a user named "jimmy" in your local db.
As far as why the second test fails, it fails because the session creation test fails right before it and it is expecting a session to exist for "jimmy".