Table of contents

Using the file system

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Checkly creates a sandboxed directory for each check run. During the run you can use this directory to save or upload artifacts. This directory is destroyed after a check is finished.

Due to this sandbox, certain Node.js variables are adapted to our platform and have values we set for them:

__dirname will have the value of /
__filename will have the value of /script.js

The values these variables correspond to might change in the future. Therefore, we recommend using __dirname, like path.join(__dirname, 'example.png') or relative paths, like ./example.png or just example.png, while using the file system-related operation. You can find an example code snippet below:

Typescript

import path from 'path'
import fs from 'fs'
import { test } from '@playwright/test'

test('save file in directory', async ({ page }) => {
  const image = await page.goto('https://picsum.photos/200/300')
  const imagePath = path.join(__dirname, 'example.jpg')
  const buffer = await image.body()
  fs.writeFileSync(imagePath, buffer)
  const readFileFromDisk = fs.readFileSync(imagePath)
})

Javascript

const path = require('path')
const fs = require('fs')
const { test } = require('@playwright/test')

test('save file in directory', async ({ page }) => {
  const image = await page.goto('https://picsum.photos/200/300')
  const imagePath = path.join(__dirname, 'example.jpg')
  const buffer = await image.body()
  fs.writeFileSync(imagePath, buffer)
  const readFileFromDisk = fs.readFileSync(imagePath)
})

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