Artillery: Cannot make tests with post request and file upload

[ooii]

Hi,

I'd like to make some stress test on my nodejs server with post requests that send files on the server.
Here is the code I'm testing with:

config:
  target: 'https://websi.te'
  phases:
    - duration: 10
      arrivalRate: 10

scenarios:
  - flow:
    - get:
        url: "/"
    - post:
        url: "/upload/"
        formData: 
          photos: '@./file.jpg'
          token: 'myToken'

The error I have on my server is the following:

(node:27684) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 100): TypeError: Cannot read property 'token' of undefined

I have also an error 500 if I remove the token and its requirement from the server.

Note that this NodeJs Request code is working:

var options = { method: 'POST',
  url: 'http://websi.te/upload',
  headers: 
   { 'postman-token': '4997a0b0-71c8-61cf-c434-2b458dd4320c',
     'cache-control': 'no-cache',
     'content-type': 'multipart/form-data; boundary=----WebKitFormBoundary7MA4YWwktrZu0gW' },
  formData: 
   { photos: 
      { value: 'fs.createReadStream("file.jpg")',
        options: { filename: 'file.jpg', contentType: null } },
     token: 'myToken' } };

request(options, function (error, response, body) {
  if (error) throw new Error(error);
  console.log(body);
});

Thanks for your help.

[hassy]

Artillery does not support the @./file.jpg syntax for reading a file in. That literal string will be sent to the server which is what's probably causing problems.

[ooii]

Thanks for your fast reply. But is there any way to test file uploads in post requests?

[hassy]

Yep - you can embed the contents of the file directly into the script or use a beforeRequest hook function to read the file in and attach the data to the request.

We are planning to add proper support for file uploads (using the @filename syntax most likely like in your script), but it's not there yet.

[ooii]

Can you point me to an example please?
Thanks.

[feimosi]

I had the same problem and finally made it working. Here's the example:

Config file:

config:
  target: 'http://localhost:8080'
  phases:
    - duration: 1
      arrivalRate: 1
  processor: './processor-utils.js'
scenarios:
  - flow:
    - post:
        url: '/upload/ocr'
        beforeRequest: 'setJSONBody'
        afterResponse: 'logResponse'
        formData:
          email: '[email protected]'

processor-utils.js

const fs = require('fs');

module.exports = {
  setJSONBody,
  logResponse,
}

function setJSONBody(requestParams, context, ee, next) {
  const formData = {
    fileOCR: fs.createReadStream(__dirname + '/files/ocr.png'),
  };

  requestParams.formData = Object.assign({}, requestParams.formData, formData);

  return next();
}

function logResponse(requestParams, response, context, ee, next) {
  console.log('[DEBUG] Response: ', response.body);
  return next();
}