Set authentication token to chai-Http - node.js

Question

I have created some test cases in node express framework which return successfully. However there are some API calls which need to have authenticated before I can make them. I can call the API that requires authentication in reactJs via ajax and It give a success response, however when I set the same header in chai-Http, it fails with invalid token.
var chai = require('chai');
var should = chai.should();
var chaiHttp = require('chai-http');
chai.use(chaiHttp);
var server = require('../app');
describe('routes : index', function() {
var token = '';
beforeEach(function(done) {
done();
});
before(function(done) {
chai.request(server)
.post('/doSignin')
.send({uname:'ruzan#test.com',password:'123123'})
.end(function(err, res) {
res.redirects.length.should.equal(0);
res.status.should.equal(200);
token = res.body.user.token;
res.type.should.equal('application/json');
done();
});
});
afterEach(function(done) {
done();
});
describe('Test FolderController', function() {
it('should list all the folders', function(done) {
console.log(token); // here it print the same token
chai.request(server)
.get('/notes/get-notes')
.set('prg-header' , token)
.end(function(err, res) {
// console.log(res);
res.status.should.equal(200);
done();
});
});
});
});
ReactJs:
$.ajax({
url: '/notes/get-notes',
method: "GET",
dataType: "JSON",
headers: { 'prg-header':loggedUser.token }
}).done( function (data, text) {
console.log(data);
if(data.status.code == 200){
// it come here the data
}
}.bind(this));