payout.js

import http from 'k6/http'
import { endpoint, getTokens, makeParams, rand, stages } from './shared.js'

/**
 * Payout tests.
 *
 * Steps for run the script up:
 *  0. make sure `k6` installed
 *  1. sepcify `endpoint` in `shared.js`
 *  2. assign users
 *  3. assign shared paymentPassword
 *  4. execute `k6 run payout.js`
 */

const users = [
  { email: '', password: '' },
  { email: '', password: '' },
]

const paymentPassword = ''

export const options = {
  stages: [
    { target: 2, duration: '3s' }
  ]
}

export const setup = () => getTokens(endpoint, users)

export default ({ tokens }) => {
  // make multiple requests randomly
  const requests = tokens.reduce((params, token) => {
    [...Array(rand(4, 15)).keys()].map(() => {
      const amount = (rand(300, 1000)).toFixed(2)
      const query = `
        mutation {
          payout (input: { amount: ${amount}, password: "${paymentPassword}" }) {
            id
            state
          }
        }
      `
      params.push(makeParams(endpoint, query, token))
    })
    return params
  }, [])

  // send requests in parallel
  const responses = http.batch(requests)
  responses.map(response => {
    if (response.status === 200) {
      const { data } = JSON.parse(response.body)
      console.log(JSON.stringify(data))
    }
  })
}