Content

• Features
• Installation
  • Local Installation (recommended)
  • Global Installation
  • Docker
• Usage
• Options
  • Iterations
  • Environment Variables
  • Global Variables
  • CSV Data File
  • JSON Data File
  • Separate
• Docker Usage
• Examples
• Unsupported Features
• Other similar tools
• Credits

Features

• Prerequest scripts.
• Test scripts.
• Variables (at all scopes + dynamic).
• Data files.
• Authentication methods (except Hawk).
• File uploads.
• postman.* interface (exceptions below).
• pm.* interface (exceptions below).
• Global variables exposed by Postman: globals environment data iteration.
• xml2Json conversion.
• 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 postman-to-k6

# or using yarn...

$ yarn add postman-to-k6

Note that this will require you to run the converter with npx 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 postman-to-k6

Docker

The tool is also available for usage in Docker. To download an image with the tool from DockerHub:

$ docker pull loadimpact/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

Options

Iterations

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

Example:

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

Environment Variables

Provide environment variables from a JSON file.

Example:

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

Global Variables

Provide global variables from a JSON file.

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

CSV Data File

Provide a data file in the CSV format.

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

JSON Data File

Pass in a data file in the JSON format.

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

Separate

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

$ 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

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

Skip Post

Skips any post-request scripts during conversion

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

Docker Usage

Using the Docker image, you execute the tool as follows:

$ docker run -it \
    -v "/path/to/postman/collection/:/postman/" \
    loadimpact/postman-to-k6 \
    /postman/my-collection.json \
    -o /postman/test.js

and then execute the k6 test using:

$ k6 run /path/to/postman/collection/test.js

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.
• Textual response messages:
  • responseCode.name
  • responseCode.detail
  • pm.response.reason
  • pm.response.to.have.status(reason)
  • pm.response.to.not.have.status(reason)
• Properties returning Postman classes:
  • pm.request.url pm.request.headers
  • pm.response.headers
• 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.

Other similar tools

• jmeter-to-k6: Convert JMeter JMX files to k6 JS.

Credits

Thanks to bookmoons for creating this tool. Also, thanks to borjacampina for creating the original incarnation of the tool.