npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@apideck/postman-to-k6

v1.13.0

Published

Convert a Postman collection to k6 JavaScript

Downloads

4,164

Readme

postman-to-k6-cover

Postman-to-k6

Converts a Postman collection to a k6 script.

The postman-to-k6 converter utilizes your Postman collection and converts all the Postman requests, including tests, variables, ... to K6 scripts that can be executed by K6 to run performance tests.

Github badge npm npm

This project is a friendly fork of the original grafana/postman-to-k6 converter, actively maintained and open for new contributions.

Feel free to contribute or pass any suggestion to improve postman-to-k6.

Content

Features

  • [x] Pre-request scripts.
  • [x] Test scripts.
  • [x] Variables (at all scopes + dynamic).
  • [x] Data files.
  • [x] Authentication methods (except Hawk).
  • [x] File uploads (experimental).
  • [x] postman.* interface (exceptions below).
  • [x] pm.* interface (exceptions below).
  • [x] Support for Postman Dynamic Variables & ReplaceIn function.
  • [x] Global variables exposed by Postman: globals environment data iteration.
  • [x] xml2Json conversion.
  • [x] All Postman Schema versions.

Installation

Local Installation (recommended)

While possible to install globally, we recommend that you, if possible, add the converter to the node_modules of your test project using:

$ npm install -D @apideck/postman-to-k6

or using yarn...

$ yarn add @apideck/postman-to-k6

Note that this will require you to run the converter with npx @apideck/postman-to-k6 your-postman-file or, if you are using an older versions of npm, ./node_modules/.bin/postman-to-k6 your-postman-file.

Global Installation

$ npm install -g @apideck/postman-to-k6

Usage

To convert an exported collection to a k6 script:

$ postman-to-k6 collection.json -o k6-script.js

Then run the script in k6, as usual, using:

$ k6 run k6-script.js

Video Introduction

Together with Nicole van der Hoeven & Paul Balogh from the K6 team, we talked about "postman-to-k6" in the K6 Office Hours podcast. We talked about how to convert a Postman collection to a k6 load test, the advantages of Postman, and the benefits of reusing automation testing scripts for performance.

Watch it on Youtube >> https://www.youtube.com/watch?v=Be66Db4wHLA

Topics covered:

  • Use cases for k6
  • Quick tour of Postman
  • Why Postman is not designed for load testing
  • Demo of postman-to-k6
  • How to use Portman to generate tests from an OpenAPI spec

Options

Iterations

Configures how many times the script will be executed before completion.

| Flag | Verbose | Default | | ---- | -------------- | ------: | | -i | --iterations | 1 |

Example:

$ postman-to-k6 collection.json --iterations 25 -o k6-script.js

Environment Variables

Provide environment variables from a JSON file.

| Flag | Verbose | Default | | ---- | --------------- | ------- | | -e | --environment | N/A |

Example:

$ postman-to-k6 collection.json --environment environment.json -o k6-script.js

Global Variables

Provide global variables from a JSON file.

| Flag | Verbose | Default | | ---- | ---------- | ------- | | -g | --global | N/A |

$ postman-to-k6 collection.json --global globals.json -o k6-script.js

CSV Data File

Provide a data file in the CSV format.

| Flag | Verbose | Default | | ---- | ------- | ------- | | -c | --csv | N/A |

$ postman-to-k6 collection.json --csv data.csv -o k6-script.js

JSON Data File

Pass in a data file in the JSON format.

| Flag | Verbose | Default | | ---- | -------- | ------- | | -j | --json | N/A |

$ postman-to-k6 collection.json --json data.json -o k6-script.js

K6 Param Options File

Pass K6 parameter options as a file in JSON format.

| Flag | Verbose | Default | | ---- | ------------- | ------- | | | --k6-params | N/A |

$ postman-to-k6 collection.json --k6-params k6-params.json -o k6-script.js

K6 Handle Summary as JSON

Output the K6 summary as a file in JSON format. This will add the K6 handleSummary(data) to the generated script, providing the functionality that K6 will store the summary output as JSON file locally.

| Flag | Verbose | Default | | ---- | -------------------------- | ------- | | | --k6-handle-summary-json | N/A |

$ postman-to-k6 collection.json --k6-handle-summary-json summary-report.json -o k6-script.js

K6 Request tag

Generate K6 request name tags based on available naming strategies:

  • none: no automatic generated tags | default
  • request: uses the request name as tag (example "Show all accounts")
  • folder-request: uses Postman folder name and the request name (example: "Accounts - Show all accounts")

| Flag | Verbose | Default | | ---- | ---------------------- | ------- | | | --k6-request-tagging | N/A |

Example for request strategy

$ postman-to-k6 collection.json --k6-request-tagging=request -o k6-script.js

Example for folder-request strategy

$ postman-to-k6 collection.json --k6-request-tagging=folder-request -o k6-script.js

Separate

Split requests into separate files, for easier rearrangement of the logic.

| Flag | Verbose | Default | | ---- | ------------ | ------- | | -s | --separate | false |

$ postman-to-k6 collection.json --separate -o k6-script.js
$ postman-to-k6 collection.json -s -o k6-script.js

Skip Pre

Skips any pre-request scripts during conversion

| Flag | Verbose | Default | | ---- | ------------ | ------- | | | --skip-pre | false |

$ postman-to-k6 collection.json --skip-pre -o k6-script.js

Skip Post

Skips any post-request scripts during conversion

| Flag | Verbose | Default | | ---- | ------------- | ------- | | | --skip-post | false |

$ postman-to-k6 collection.json --skip-pre -o k6-script.js

CLI options file

Manage all the CLI options in a separate configuration file and pass them along to the postman-to-k6 command. To make the CLI usage easier, especially in CI/CD implementations.

All the available CLI options can be used in the config file. By passing the CLI options as parameters, you can overwrite the defined CLI options defined in the file.

| Flag | Verbose | Default | | ---- | -------------------- | ------- | | | --cli-options-file | false |

$ postman-to-k6 collection.json --cli-options-file cli-config.json

Example of JSON CLI config file

{
    "output": "k6-script.js",
    "k6-params": "config/k6-params.json",
    "environment": "config/envs/team.env.json",
    "separate": true
}

Examples

A collection of Postman examples are located under example. To run one of the examples, just run it as you would any other command:

$ postman-to-k6 example/v2/echo.json -o k6-script.js

Unsupported Features

  • Sending requests from scripts using pm.sendRequest.
  • Controlling request execution order using postman.setNextRequest.
  • Cookie properties, like hostOnly, session, and storeId.
  • Postman methods:
    • pm.response.reason
    • pm.response.to.have.status(reason)
    • pm.response.to.not.have.status(reason)
    • pm.request.auth
  • The Hawk authentication method.
  • Deprecated xmlToJson method.
  • Request IDs are changed. Postman doesn't provide them in the export, so we have to generate new ones.

Resources

A collection of blog posts and resources about postman-to-k6

Other similar tools

Credits

Special thanks to the K6 team from Grafana for open-sourcing & growing the converter and contributing it to the community. Thanks to bookmoons for creating this tool. Also, thanks to borjacampina for creating the original incarnation of the tool.