Investigate Uncaught (in promise) when evaluating JS: execution context changed

[ankur22]

While running the following test script against a remote chrome instance:

import { check } from 'k6';
import { browser } from 'k6/experimental/browser';

export const options = {
  scenarios: {
    ui: {
      executor: 'shared-iterations',
      vus: 5,
      iterations: 1000,
      maxDuration: '40m',
      options: {
        browser: {
          type: 'chromium',
        },
      },
    },
  },
  thresholds: {
    checks: ["rate==1.0"]
  }
}

export default async function () {
  const context = browser.newContext();
  const page = context.newPage();

  try {
    // Goto front page, find login link and click it
    await page.goto('https://test.k6.io/', { waitUntil: 'networkidle' });
    await Promise.all([
      page.waitForNavigation(),
      page.locator('a[href="/my_messages.php"]').click(),
    ]);
    // Enter login credentials and login
    page.locator('input[name="login"]').type('admin');
    page.locator('input[name="password"]').type('123');
    // We expect the form submission to trigger a navigation, so to prevent a
    // race condition, setup a waiter concurrently while waiting for the click
    // to resolve.
    await Promise.all([
      page.waitForNavigation(),
      page.locator('input[type="submit"]').click(),
    ]);
    check(page, {
      'header': page.locator('h2').textContent() == 'Welcome, admin!',
    });
  } finally {
    page.close();
  }
}

I encountered the following error:

Uncaught (in promise) GoError: evaluating JS: execution context changed; most likely because of a navigation
	at github.com/grafana/xk6-browser/api.Page.Close-fm (native)
	at file:///tmp/POjeov/script.js:48:4(89)
 executor=shared-iterations scenario=ui

This was unexpected since this script seems to have all the necessary actions in place to avoid an issue when a navigation occurs. Replicate and resolve this issue.

Test run id: 154442

[ankur22]

Could this also be related to #970 (comment)?

[inancgumus]

Closed by #1219.