Node-vcr NPM | npm.io

Node VCR

Record HTTP interactions The Node Way™. This repository is basically a clone of flickr/yakbak and is also based on ijpiantanida/talkback.

Installation

$ npm install node-vcr --save-dev

Code Documentation

Please refer to the github wiki page

Usage

The main idea behind testing HTTP clients with node-vcr is:

Make your client's target host configurable
Set up a node-vcr server locally to proxy the target host
Point your client at the node-vcr server.

Then develop or run your tests. If a recorded HTTP request is found on disk, it will be played back instead of hitting the target host. If no recorded request is found, the request will be forwarded to the target host and recorded to disk (or return 404).

const crypto = require('crypto')
const http = require('http')
const nodeVcr = require('node-vcr')
const path = require('path')
const _ = require('lodash')

const proxyTarget = 'https://api.github.com/users/mbaertschi/orgs'
const dirname = path.join(__dirname, 'playback')
const port = 8888

const hash = (req, body) => {
  const action = `${req.method.toLowerCase()}_${_.last(req.url.split('/'))}`
  const content = body.toString()
  const md5sum = crypto.createHash('md5')

  return `${action}_${md5sum.update(content).digest('hex')}`
}

const handler = nodeVcr(proxyTarget, {
  dirname,
  hash
})

const server = http.createServer(handler)
server.listen(port)

Options

Name	Type	Description	Default
host	String	The proxy target to tape
dirname	String	The tapes directory	`./tapes/`
noRecord	Boolean	If true, requests will return a 404 error if the tape doesn't exist	`false`
maxRedirects	Number	Number of max http redirects. 0 means no redirects	`5`
tapeRequestBody	Boolean	If enabled the request body will be written to tape	`false`
ignoreHeaders	Array	Headers which must not be written down to tape (req and res)	`[ ]`
hash	Function	Provide your own IncomingMessage hash function of the signature `function (req, body)`	`see source`
reload	Boolean	If true, node-vcr will reload (delete and record) required tape	`false`
refresh	Boolean	If true, node-vcr will refresh required tape	`false`

Examples

Some examples and its results can be found in the folder under ./examples.

Tech-Stack

nodemon development mode
jest test environment
jsdoc documentation
npm-check for dependencies check
pre-commit for pre git commit hooks
babel to compile to es2015

Scripts

# start development mode with nodemon
yarn dev
# run tests with jest
yarn test
# start continous integration testing with jest
yarn ci
# generate the jsdoc documentation
yarn jsdoc
# run eslint
yarn lint
# check for dependendies updates
yarn deps
# build with babel
yarn build