test_ReadHeapSnapshot_worker.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that we can read core dumps into HeapSnapshot instances in a worker.

add_task(async function () {

  const worker = new ChromeWorker("resource://test/heap-snapshot-worker.js");

  worker.postMessage({});

  let assertionCount = 0;

  worker.onmessage = e => {

    if (e.data.type !== "assertion") {

      return;

    ok(e.data.passed, e.data.msg + "\n" + e.data.stack);

    assertionCount++;

};

  await waitForDone(worker);

  Assert.greater(assertionCount, 0);

  worker.terminate();

});

function waitForDone(w) {

  return new Promise((resolve, reject) => {

    w.onerror = e => {

      reject();

      ok(false, "Error in worker: " + e);

};

    w.addEventListener("message", function listener(e) {

      if (e.data.type === "done") {

        w.removeEventListener("message", listener);

        resolve();

});

});