How to Pass variable in the check function text?

Grafana k6
1

I just want to check which user failed the login… so I used below code, but the variable of login name is not getting in the custom text “user login error ${username}”

check(response, {
      "user login error `${username}`" : (r) =>
        r.body.includes('welcome user'),
    });
3

Hi @venkatareddy

I think you’ll need a slightly different syntax. The following example works for me:

import { check } from 'k6';
import http from 'k6/http';

const url = 'http://test.k6.io/';

export default function () {
    const res = http.get(url);
    check(res, {
        [`${url} is status 200`]: (r) => r.status === 200,
    });
}

  scenarios: (100.00%) 1 scenario, 1 max VUs, 10m30s max duration (incl. graceful stop):
           * default: 1 iterations for each of 1 VUs (maxDuration: 10m0s, gracefulStop: 30s)


     ✓ http://test.k6.io/ is status 200

     checks.........................: 100.00% ✓ 1        ✗ 0
     data_received..................: 17 kB   31 kB/s
     data_sent......................: 547 B   985 B/s
     http_req_blocked...............: avg=169.05ms min=114.26ms med=169.05ms max=223.84ms p(90)=212.88ms p(95)=218.36ms
     http_req_connecting............: avg=107.74ms min=102.99ms med=107.74ms max=112.5ms  p(90)=111.55ms p(95)=112.02ms
     http_req_duration..............: avg=108ms    min=102.52ms med=108ms    max=113.49ms p(90)=112.39ms p(95)=112.94ms
       { expected_response:true }...: avg=108ms    min=102.52ms med=108ms    max=113.49ms p(90)=112.39ms p(95)=112.94ms
     http_req_failed................: 0.00%   ✓ 0        ✗ 2
     http_req_receiving.............: avg=174.5µs  min=134µs    med=174.5µs  max=215µs    p(90)=206.9µs  p(95)=210.95µs
     http_req_sending...............: avg=46µs     min=42µs     med=46µs     max=50µs     p(90)=49.2µs   p(95)=49.6µs  
     http_req_tls_handshaking.......: avg=60.36ms  min=0s       med=60.36ms  max=120.72ms p(90)=108.65ms p(95)=114.68ms
     http_req_waiting...............: avg=107.78ms min=102.34ms med=107.78ms max=113.23ms p(90)=112.14ms p(95)=112.68ms
     http_reqs......................: 2       3.602695/s
     iteration_duration.............: avg=554.98ms min=554.98ms med=554.98ms max=554.98ms p(90)=554.98ms p(95)=554.98ms
     iterations.....................: 1       1.801347/s


running (00m00.6s), 0/1 VUs, 1 complete and 0 interrupted iterations
default ✓ [======================================] 1 VUs  00m00.6s/10m0s  1/1 iters, 1 per VU

I hope this helps :bowing_woman:

Cheers!

5

@eyeveebee Thanks for your help and support.