Node test upload file multi part superagent plus supertest

gistfile1.js

var request = require('supertest');
var fs = require('fs');

var reqData = {
  title: 'Rahh!',
  fileName: 'test-image.jpeg'
};

var req = request(context.app) //context.app = your express object
  .post('/v1/images')
  .set('Authorization', 'Bearer ' + context.token); 

req
  .part()
  .set('Content-Disposition', 'form-data; name="content"; filename="' + reqData.fileName + '"')
  .set('Content-Type', 'image/jpeg')
  .write(fs.readFileSync((__dirname + '/../fixtures/' + reqData.fileName))); //read the file

req
  .part()
  .set('Content-Disposition', 'form-data; name="title"')
  .write(reqData.title);


req.end(function(err, res) {
  //do your tests over here
});