Playwright Load Testing Integration with k6 and Artillery

Combine Playwright functional tests with k6 or Artillery load testing to validate application behavior under concurrent user load. This guide provides step-by-step Playwright patterns to handle this scenario reliably.

Introduction

Robust automation requires handling domain-specific patterns effectively. This article covers playwright load testing integration with k6 and artillery with production-ready Playwright code.

Architecture Overview

graph TD
    k6["k6 VUs"] --> Browser["Chromium Instances"]
    Browser --> App["Application Under Load"]
    App --> Metrics["Response Times"]
    Metrics --> Report["k6 Report"]

Implementation Guide

// k6 browser test integration
import { chromium } from 'k6/experimental/browser';

export default async function () {
  const browser = chromium.launch();
  const page = browser.newPage();

  try {
    await page.goto('https://your-app.com/');
    await page.getByRole('button', { name: 'Login' }).click();
    // k6 measures response times automatically
  } finally {
    page.close();
    browser.close();
  }
}

Run Your Tests

npx playwright test --grep "Playwright Load Testing"
npx playwright test --ui

Reference Table

Best Practices

Common Mistakes

Frequently Asked Questions

Can Playwright tests be used for load testing?

Playwright is designed for functional testing. For load testing, use k6 Browser or Artillery with Playwright scripts.

How to run k6 browser tests?

Install k6 with browser module and run k6 run --vus=10 --duration=30s browser-script.js.

How to measure page load performance under load?

Use k6's browser metrics like browser_web_vital_lcp and browser_web_vital_cls during load tests.

What is the recommended VU count for browser load tests?

Browser load tests are resource-intensive. 10-50 VUs with Chromium is typical for most scenarios.

How to integrate load test results with CI?

Export k6 results in JSON format and use threshold checks to fail CI builds when performance degrades.

Summary

Combine Playwright functional tests with k6 or Artillery load testing to validate application behavior under concurrent user load. Apply these patterns to build a reliable, maintainable automation suite for your specific use case.

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