API Load Testing

This repository gives the opportunity for quick API load testing. It lets you record a usage scenario in the browser to then transform it to a Postman Collection or a K6 Load Test.

Installation

Prerequisite: Installed NodeJS, Postman and K6

npm install

Usage

1. Export the Network HAR

1. Open Chrome as browser.
2. Open Dev Tools (F12) and go to the network tab.
3. Check Preserve log and set filter to Fetch/XHR in the Dev Tools.
4. Open the interested website.
5. Execute the interested usage scenario.
6. Export the HAR file from the Dev Tools and save it to 1-har-exported.

2. Filter HAR

Filter the HAR file for only the XHR requests and save them to 2-har-filtered.

npm run har-filter

3. Create Postman Collection

1. Open Postman.
2. Import the HAR file from 2-har-filtered as Postman Collection.
3. Modify the collection like the authentication.
4. Export the Postman Collection as json to the 3-postman-collections.

4. Postman to K6

Transform the Postman Collections to K6 Scripts and save them to 4-k6-scripts. Get all required commands:

npm run postman-to-k6

And execute them all.

5. Execute K6 Load Tests

Get all available load test commands:

npm run k6-commands

And execute them as desired.

References

• Running K6
• Postman to K6 GitHub