Supertest: ENOENT on .attach

[KempfCreative]

To test an endpoint for uploading videos, I am using .attach(), but my test never passes due to what I am assuming is supertests inability to locate the video.

Here is my test case:

var app = require('./helpers/app');
var blog = require('../routes/blog');
var upload = require('../routes/files');
var should = require('should');
var expect = require('expect');
var request = require('supertest');
var bodyParser = require('body-parser');
...
//other unrelated tests here
...
describe("Adding a file to the local file system", function() {
    it("will successfully reach the endpoint", function(done) {
        request(app)
        .post('/uploads')
        .field('Content-Type', 'multipart/form-data')
        .field('file', 'filefield')
        .attach('file', './files/zack-video-test.mp4')
        .end(function (err, res) {
            if(err) {
                console.log(err);
            } else expect(res.status).to.equal(200);
            files.busboyFinished().should.be.true();
            it("will find the local file as defined", function() {
                expect(files.localFile()).toExist();
            });
            done();
        })

    });
});

When the test is run, I get this output:

Adding a file to the local file system
    1) will successfully reach the endpoint
POSTING TO /UPLOAD
request headers  { host: '127.0.0.1:56042',
  'accept-encoding': 'gzip, deflate',
  'user-agent': 'node-superagent/1.2.0',
  'content-type': 'multipart/form-data; boundary=--------------------------840493739829893270864048',
  connection: 'close',
  'transfer-encoding': 'chunked' }


  5 passing (84ms)
  1 failing

  1) Adding a file to the local file system will successfully reach the endpoint:
     Uncaught Error: ENOENT, open './files/zack-video-test.mp4'

I have already tried changing the path of the video around (files/, ./files/, ../tests/files/) but nothing seems to work.

Any ideas what I am doing wrong here?

[grobgl]

The way paths are evaluated seems a bit weird. This works for me:
.attach('file', 'tests/files/zack-video-test.mp4')

[KempfCreative]

@grobgl yep. I meant to come back and close this issue. I realized that the path is relative to the app route, not the test file. This is working for me now. Thanks for checking on it for me.