<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=583181
-->
<head>
  <title>Test for Bug 583181</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/ChromeTask.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body onload="onLoad()">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=583181">Mozilla Bug 583181</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
<script class="testbody" type="text/javascript">
"use strict";

SimpleTest.waitForExplicitFinish();

const LEGACY_BUILD_ID = 20181001000000;

//
// Access navigator.buildID from unprivileged web content.
//
var isOK = false;
try {
  var contentBuildID = navigator.buildID;
  isOK = true;
} catch (ex) {
}
ok(isOK, "navigator.buildID should never throw");
is(typeof(contentBuildID), "string", "navigator.buildID should be a string");
is(+contentBuildID, LEGACY_BUILD_ID,
   "navigator.buildID should be spoofed in content");

async function onLoad() {
  //
  // Access navigator.buildID from chrome.
  //
  let chromeBuildID = await ChromeTask.spawn(null, () => {
    const browser = Services.wm.getMostRecentBrowserWindow();
    return browser.navigator.buildID;
  });

  ok(+chromeBuildID > LEGACY_BUILD_ID,
     `navigator.buildID should be exposed in chrome - got "${chromeBuildID}"`);

  //
  // Access navigator.buildID from mozilla.org.
  //
  let mozillaBuildID = await getMozillaBuildID();

  ok(+mozillaBuildID > LEGACY_BUILD_ID,
     `navigator.buildID should be exposed on mozilla.org ` +
     `- got "${mozillaBuildID}"`);
  is(chromeBuildID, mozillaBuildID,
     "navigator.buildID should be the same in chrome and on mozilla.org");

  //
  // Access navigator.buildID from mozilla.org when resisting fingerprinting.
  //
  await SpecialPowers.pushPrefEnv(
    {"set": [["privacy.resistFingerprinting", true]]});

  let resistBuildID = await getMozillaBuildID();

  is(+resistBuildID, LEGACY_BUILD_ID,
     "navigator.buildID should be spoofed on mozilla.org when " +
     "resisting fingerprinting");

  SimpleTest.finish();
}

async function getMozillaBuildID() {
  let iframe = document.getElementById("mozillaIFrame");

  await new Promise(resolve => {
    iframe.addEventListener("load", resolve, { once: true });
    SpecialPowers.spawn(iframe, [], () => this.content.location.reload());
  });

  return SpecialPowers.spawn(
    iframe, [], () => this.content.wrappedJSObject.navigator.buildID);
}
</script>
</pre>
<iframe id="mozillaIFrame" src="https://www.mozilla.org/" />
</body>
</html>
