video_stress.js

const { chromium } = require('..');
const videoDir = require('path').join(__dirname, '..', '.tmp');

async function go(browser) {
  console.log(`Creating context`);
  const context = await browser.newContext({ recordVideo: { dir: videoDir } });
  const page = await context.newPage();
  await page.goto('https://webkit.org/blog-files/3d-transforms/poster-circle.html');
  await page.waitForTimeout(10000);
  const time = Date.now();
  await context.close();
  console.log(`Closing context for ${Date.now() - time}ms`);
  const video = await page.video();
  console.log(`Recorded video at ${await video.path()}`);
}

(async () => {
  const browser = await chromium.launch({ headless: true });
  const promises = [];
  for (let i = 0; i < 10; i++)
    promises.push(go(browser));
  await Promise.all(promises);
  await browser.close();
})();