resource_dedicated_worker.html

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This WPT test may be referenced by the following Test IDs:
- /resource-timing/resource_dedicated_worker.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8" />

<title>Resource Timing in dedicated workers</title>

<link rel="author" title="Google" href="http://www.google.com/" />

<link rel="help" href="http://www.w3.org/TR/resource-timing/"/>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="resources/webperftestharness.js"></script>

<script src="resources/webperftestharnessextension.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script>

const mainDocResource = "/images/red.png?noCacheResourceDedicatedWorker";

// Resources below are requested in the worker thread

// "resources/worker_with_images.js".

const workerResources = [

  "/resource-timing/resources/blue.png",

  "/resource-timing/resources/resource_timing_test0.png",

];

const {promise: mainDocPromise, resolve: resolveMainDoc} = Promise.withResolvers();

const {promise: workerPromise, resolve: resolveWorker} = Promise.withResolvers();

// Load main document resource

var xhr = new XMLHttpRequest;

xhr.open('get', mainDocResource, true);

xhr.onload = function() {

  resolveMainDoc();

xhr.send();

const worker = new Worker("resources/worker_with_images.js");

worker.onmessage = function(event) {

  resolveWorker();

promise_test(async () => {

  await Promise.all([

    mainDocPromise,

    workerPromise,

]);

  const context = new PerformanceContext(window.performance);

  // The main doc resource appears in the main document.

  const mainDocResourceUrl = new URL(mainDocResource, get_host_info().HTTP_ORIGIN).href;

  const mainDocEntries = context.getEntriesByName(mainDocResourceUrl);

  assert_greater_than(mainDocEntries.length, 0, "main doc resource appears");

  // On the other hand, the worker resources don't.

  for(resource of workerResources) {

    let workerResourceUrl = new URL(resource, get_host_info().HTTP_ORIGIN).href;

    let workerEntries = context.getEntriesByName(workerResourceUrl);

    assert_equals(workerEntries.length, 0, "worker resources don't appear");

}, "Verify that resources requested by dedicated workers don't appear in the main document");

</script>

</head>

<body>

<h1>Description</h1>

<p>This test validates that resources requested by dedicated workers don't appear in the main document.</p>

</body>

</html>