test_memory_allocations_07.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<!--

Bug 1192335 - Test getting the byte sizes for allocations.

-->

<head>

  <meta charset="utf-8">

  <title>Memory monitoring actor test</title>

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

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

</head>

<body>

<pre id="test">

<script src="memory-helpers.js" type="application/javascript"></script>

<script>

"use strict";

window.onload = function() {

  SimpleTest.waitForExplicitFinish();

  (async function() {

    const { memory, target } = await startServerAndGetSelectedTabMemory();

    await memory.attach();

    const allocs = [];

    function allocator() {

      allocs.push({});

    await memory.startRecordingAllocations();

    allocator();

    allocator();

    allocator();

    const response = await memory.getAllocations();

    await memory.stopRecordingAllocations();

    ok(response.allocationSizes, "The response should have bytesizes.");

    is(response.allocationSizes.length, response.allocations.length,

       "There should be a bytesize for every allocation.");

    ok(response.allocationSizes.length >= 3,

       "There are atleast 3 allocations.");

    ok(response.allocationSizes.every(isPositiveNumber),

       "every bytesize is a positive number");

    await memory.detach();

    destroyServerAndFinish(target);

  })();

};

function isPositiveNumber(n) {

  return typeof n === "number" && n > 0;

</script>

</pre>

</body>

</html>