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<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=938023
-->
<head>
  <title>Test for Bug 938023 Downloads API</title>
  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="clear_all_done_helper.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=938023">Mozilla Bug 938023</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<a href="serve_file.sjs?contentType=application/octet-stream&size=102400&rate=1024" download="test.bin" id="download1">Large Download</a>
<pre id="test">
<script class="testbody" type="text/javascript;version=1.7">

// Testing pausing a download and then resuming it.

SimpleTest.waitForExplicitFinish();

var index = -1;

function next(args) {
  index += 1;
  if (index >= steps.length) {
    ok(false, "Shouldn't get here!");
    return;
  }
  try {
    steps[index](args);
  } catch(ex) {
    ok(false, "Caught exception", ex);
  }
}

var pausing = false;
var resuming = false;

// Catch all error function.
function error() {
  ok(false, "API failure");
  SimpleTest.finish();
}

function checkDownloadList(downloads) {
  ok(downloads.length == 0, "No downloads left");
  SimpleTest.finish();
}

function checkResumeSucceeded(download) {
  ok(download.state == "succeeded", "Download resumed successfully.");
  clearAllDoneHelper(true).then(checkDownloadList, error);
}

function downloadChange(evt) {
  var download = evt.download;

  info("got download event, state: " + download.state +
       " current bytes: " + download.currentBytes +
       " pausing?: " + pausing + " resuming?: " + resuming);
  if (download.state == "downloading" && !pausing) {
    pausing = true;
    download.pause();
  } else if (download.state == "stopped" && !resuming) {
    resuming = true;
    ok(pausing, "Download stopped by pause()");
    download.resume()
            .then(function() { checkResumeSucceeded(download); }, error);
  }
}

var steps = [
  // Start by setting the pref to true.
  function() {
    SpecialPowers.pushPrefEnv({
      set: [["dom.mozDownloads.enabled", true]]
    }, next);
  },

  // Setup permission and clear current list.
  function() {
    SpecialPowers.pushPermissions([
      {type: "downloads", allow: true, context: document}
    ], function() {
      clearAllDoneHelper(true).then(next, error);
    });
  },

  function(downloads) {
    ok(downloads.length == 0, "Start with an empty download list.");
    next();
  },

  // Setup the event listeners.
  function() {
    navigator.mozDownloadManager.ondownloadstart =
      function(evt) {
        ok(true, "Download started");
        evt.download.addEventListener("statechange", downloadChange);
      }
    next();
  },

  // Click on the <a download> to start the download.
  function() {
    document.getElementById("download1").click();
  }
];

next();

</script>
</pre>
</body>
</html>