[BUG] Firefox page.goto broken for sites with service worker

Context:

• Playwright Version: 1.0.2
• Operating System: Ubuntu 20.04 LTS
• Node version: 12.17.0
• Browser: Firefox

With the firefox browser page.goto seems to never be resolved nor rejected when a service worker is running. On my project I’m using Workbox for my service worker, but you can see the bug with any service worker. The following example uses the Svelte website and its service worker. The OK message is never logged and we get a timeout error:

const { firefox } = require('playwright');

(async () => {
    const browser = await firefox.launch();
    const page = await browser.newPage();
    await page.goto('https://svelte.dev');
    console.log("Waiting for the service worker…");
    await page.waitForTimeout(1000);
    console.log("Service worker running, going to the homepage again…");
    await page.goto('https://svelte.dev');
    console.log("OK");
    await browser.close();
})();

With the firefox browser I have to disable the service worker for the OK message to finally show up:

const { firefox } = require('playwright');

(async () => {
    const browser = await firefox.launch();
    const page = await browser.newPage();
    await page.addInitScript(
        () => Object.defineProperty(navigator.serviceWorker, 'register', { get: Promise.reject })
    );
    await page.goto('https://svelte.dev');
    console.log("Waiting even if no service worker to have the same test conditions…");
    await page.waitForTimeout(1000);
    console.log("Service worker not running, going to the homepage again…");
    await page.goto('https://svelte.dev');
    console.log("OK");
    await browser.close();
})();

Note that there is no bug with the chromium browser. I couldn’t test whith WebKit because of #2447.

[dgozman]

This should be fixed in the next release. You can try using playwright@next to check whether this works today.

[laurentpayot]

@kishorambare As far as I remember I was using Playwright runner.

These logs you and @shirshGit are getting look like a totally different problem. You should definitively open a new issue.