<!--
  Any copyright is dedicated to the Public Domain.
  http://creativecommons.org/publicdomain/zero/1.0/
-->
<!DOCTYPE HTML>
<html>
<head>
  <title>Test updating a service worker with a bad script cache.</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<script src='utils.js'></script>
<script class="testbody" type="text/javascript">

async function deleteCaches(cacheStorage) {
  let keyList = await cacheStorage.keys();
  let promiseList = [];
  keyList.forEach(key => {
    promiseList.push(cacheStorage.delete(key));
  });
  return await Promise.all(keyList);
}

function waitForUpdate(reg) {
  return new Promise(resolve => {
    reg.addEventListener('updatefound', resolve, { once: true });
  });
}

async function runTest() {
  let reg;
  try {
    const script = 'update_worker.sjs';
    const scope = 'bad-script-cache';

    reg = await navigator.serviceWorker.register(script, { scope });
    await waitForState(reg.installing, 'activated');

    // Verify the service worker script cache has the worker script stored.
    let chromeCaches = SpecialPowers.createChromeCache('chrome', window.origin);
    let scriptURL = new URL(script, window.location.href);
    let response = await chromeCaches.match(scriptURL.href);
    is(response.url, scriptURL.href, 'worker script should be stored');

    // Force delete the service worker script out from under the service worker.
    // Note: Prefs are set to kill the SW thread immediately on idle.
    await deleteCaches(chromeCaches);

    // Verify the service script cache no longer knows about the worker script.
    response = await chromeCaches.match(scriptURL.href);
    is(response, undefined, 'worker script should not be stored');

    // Force an update and wait for it to fire an update event.
    reg.update();
    await waitForUpdate(reg);
    await waitForState(reg.installing, 'activated');

    // Verify that the script cache knows about the worker script again.
    response = await chromeCaches.match(scriptURL.href);
    is(response.url, scriptURL.href, 'worker script should be stored');
  } catch (e) {
    ok(false, e);
  }
  if (reg) {
    await reg.unregister();
  }

  // If this test is run on windows and the process shuts down immediately after, then
  // we may fail to remove some of the Cache API body files.  This is because the GC
  // runs late causing Cache API to cleanup after shutdown begins.  It seems something
  // during shutdown scans these files and conflicts with removing the file on windows.
  //
  // To avoid this we perform an explict GC here to ensure that Cache API can cleanup
  // earlier.
  await new Promise(resolve => SpecialPowers.exactGC(resolve));

  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({"set": [
  // standard prefs
  ["dom.serviceWorkers.exemptFromPerDomainMax", true],
  ["dom.serviceWorkers.enabled", true],
  ["dom.serviceWorkers.testing.enabled", true],
  ["dom.caches.enabled", true],

  // immediately kill the service worker thread when idle
  ["dom.serviceWorkers.idle_timeout", 0],

]}, runTest);
</script>
</pre>
</body>
</html>
