expectBody not working as expected

Hi @mcollina my version “autocannon”: “^7.9.0”, my codebase

let customResponse= customResponse

  url: 'http://localhost:3011/employees/api/searchtype/',
  amount: 10,
  connections: 1,
  pipelining: 1,
  //duration: 60,
  method: "POST",
  debug: true,
  expectBody: customResponse,
  headers: { "Content-Type": "application/json; charset=UTF-8", 'x-access-token': 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE2NTkxMjMxMTd9.xavjahsbNggTSDBu6Vmsxzz6olPMXHTPggkFForZqaU' },
  body: JSON.stringify(customRequest),

}, (err, result) => {

  console.log(err);
  if (err != null) return; // or do some error handling
  handleResults(result);
})

The response which i am getting from api response is below API Response

and when I compare it http://www.jsondiff.com/ it was identical Problem statement

when i run the above i am getting mismatched results which should not happen if both the customResponse and API Response are identical

Any pointers on how to tackle this issue

[matt212]

Hi @mcollina I have put together this repo with all required details to reproduce the issue

NodeJS_Fastify_AutoCannon

All instructions are spelled out in readme file for above repo

Cheers !

[matt212]

Hi @mcollina

there is deeper problem wherein resp.body always is string so my below code will only work if resp.body follows actual api response type whether it is obj or string

filename : httpClient
path : autocannon\lib
line :  109

if (!isFn && this.opts.expectBody && this.opts.expectBody !== resp.body) {
        if (typeof resp.body === 'object') {         
          if (!compareObjects(this.opts.expectBody, resp.body) === false) {
            return this.emit('mismatch', resp.body)
          }
        } else if (typeof resp.body === 'string') {
          
          return this.emit('mismatch', resp.body)
        }
      }
    }

further investigation points to below const HTTPParser = require('http-parser-js').HTTPParser which parses and it seems convert all responses to string again that is as per my investigation correct me if i am wrong