test_enabled_pref.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Bug 1645054 - test dom.serviceWorkers.enabled preference</title>

</head>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<script src="utils.js"></script>

<script>

  function create_iframe(url) {

    return new Promise(function(res) {

      iframe = document.createElement('iframe');

      iframe.src = url;

      iframe.onload = function() { res(iframe) }

      document.body.appendChild(iframe);

});

  async function do_fetch(pref) {

    await SpecialPowers.pushPrefEnv({ set: [pref] });

    let iframe = await create_iframe("./pref/fetch_nonexistent_file.html");

    let status = await iframe.contentWindow.fetch_status();

    await SpecialPowers.popPrefEnv();

    return status;

  add_task(async () => {

    await SpecialPowers.pushPrefEnv({

      set: [['dom.serviceWorkers.testing.enabled', true]]

});

    let reg = await navigator.serviceWorker.register(

      'pref/intercept_nonexistent_file_sw.js');

    await waitForState(reg.installing, 'activated');

    let status;

    status = await do_fetch(['dom.serviceWorkers.enabled', true]);

    is(status, 200, 'SW enabled');

    status = await do_fetch(['dom.serviceWorkers.enabled', false]);

    is(status, 404, 'SW disabled');

    status = await do_fetch(['dom.serviceWorkers.enabled', true]);

    is(status, 200, 'SW enabled again');

    await reg.unregister();

});

</script>

<body>

</body>

</html>