test_bug1408734.html

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<!--

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<!DOCTYPE HTML>

<html>

<head>

  <title>Bug 1408734</title>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

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

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

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

</head>

<body>

<p id="display"></p>

<div id="content" style="display: none"></div>

<pre id="test"></pre>

<script class="testbody" type="text/javascript">

// setup prefs

add_task(() => {

  return SpecialPowers.pushPrefEnv({"set": [

    ["dom.serviceWorkers.enabled", true],

    ["dom.serviceWorkers.testing.enabled", true],

  ]});

});

// test for bug 1408734

add_task(async () => {

  // register a service worker

  let registration = await navigator.serviceWorker.register("fetch.js",

                                                            {scope: "./"});

  // wait for service worker be activated

  await waitForState(registration.installing, "activated");

  // get the ServiceWorkerRegistration we just register through GetRegistration

  registration = await navigator.serviceWorker.getRegistration("./");

  ok(registration, "should get the registration under scope './'");

  // call unregister()

  await registration.unregister();

  // access registration.updateViaCache to trigger the bug

  // we really care that we don't crash. In the future we will fix

  is(registration.updateViaCache, "imports",

     "registration.updateViaCache should work after unregister()");

});

</script>

</pre>

</body>

</html>