<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1314912
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1314912</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

  /** Test for Bug 1314912 */

  const RATE_LIMIT_COUNT = 90;
  const RATE_LIMIT_TIME_SPAN = 3;

  async function setup() {
    await SpecialPowers.pushPrefEnv({set: [
      ["dom.navigation.locationChangeRateLimit.count", RATE_LIMIT_COUNT],
      ["dom.navigation.locationChangeRateLimit.timespan", RATE_LIMIT_TIME_SPAN]]});
  }

  let inc = 0;

  const rateLimitedFunctions = (win) => ({
    "history.replaceState": () => win.history.replaceState(null, "test", `${win.location.href}#${inc++}`),
    "history.pushState":  () => win.history.pushState(null, "test", `${win.location.href}#${inc++}`),
    "history.back": () => win.history.back(),
    "history.forward": () => win.history.forward(),
    "history.go": () => win.history.go(-1),
    "location.href": () => win.location.href = win.location.href + "",
    "location.hash": () => win.location.hash = inc++,
    "location.host": () => win.location.host = win.location.host + "",
    "location.hostname": () => win.location.hostname = win.location.hostname + "",
    "location.pathname": () => win.location.pathname = win.location.pathname + "",
    "location.port": () => win.location.port = win.location.port + "",
    "location.protocol": () => win.location.protocol = win.location.protocol + "",
    "location.search": () => win.location.search = win.location.search + "",
    "location.assign": () => win.location.assign(`${win.location.href}#${inc++}`),
    "location.replace": () => win.location.replace(`${win.location.href}#${inc++}`),
    "location.reload": () => win.location.reload(),
  });

  async function test() {
    await setup();

    // Open new window and wait for it to load
    let win = window.open("blank.html");
    await new Promise((resolve) => SimpleTest.waitForFocus(resolve, win))

    // Execute the history and location functions
    Object.entries(rateLimitedFunctions(win)).forEach(([name, fn]) => {
      // Reset the rate limit for the next run.
      info("Reset rate limit.");
      SpecialPowers.wrap(win).browsingContext.resetLocationChangeRateLimit();

      info(`Calling ${name} ${RATE_LIMIT_COUNT} times to reach the rate limit.`);
      for(let i = 0; i< RATE_LIMIT_COUNT; i++) {
        fn.call(this);
      }
      // Next calls should throw because we're above the rate limit
      for(let i = 0; i < 5; i++)  {
        SimpleTest.doesThrow(() => fn.call(this), `Call #${RATE_LIMIT_COUNT + i + 1} to ${name} should throw.`);
      }
    })

    // We didn't reset the rate limit after the last loop iteration above.
    // Wait for the rate limit timer to expire.
    SimpleTest.requestFlakyTimeout("Waiting to trigger rate limit reset.");
    await new Promise((resolve) => setTimeout(resolve, 5000));

    // Calls should be allowed again.
    Object.entries(rateLimitedFunctions(win)).forEach(([name, fn]) => {
      let didThrow = false;
      try {
        fn.call(this);
      } catch(error) {
        didThrow = true;
      }
      is(didThrow, false, `Call to ${name} must not throw.`)
    });

    // Cleanup
    win.close();
    SpecialPowers.wrap(win).browsingContext.resetLocationChangeRateLimit();
    SimpleTest.finish();
  }

  </script>
</head>
<body onload="setTimeout(test, 0);">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1314912">Mozilla Bug 1314912</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>
