<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=489415
-->
<head>
  <title>Test for Bug 489415</title>
  <script type="application/javascript" src="/MochiKit/MochiKit.js"></script>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  <script type="text/javascript" src="manifest.js"></script>
  <style>
    video {
      width: 40%;
      border: solid black 1px;
    }
  </style>
</head>

<body>
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=489415">Mozilla Bug 489415</a>
  <p id="display"></p>
  <pre id="test">
  <script type="text/javascript">
    SimpleTest.waitForExplicitFinish();

    var pushPrefs = (...p) => SpecialPowers.pushPrefEnv({ set: p });
    var count = 0;

    function canReadBack(video) {
      var c = document.createElement("canvas");
      var ctx = c.getContext("2d");
      ctx.drawImage(video, 0, 0);
      try {
        c.toDataURL();
        return true;
      } catch (ex) {
        return false;
      }
    }

    function runTest(origin, shouldReadBackOnLoad) {
      return new Promise(function (resolve, reject) {
        // Load will redirect mid-flight, which will be detected and should error,
        // and we should no longer be able to readback.
        var video = document.createElement("video");
        video.preload = "metadata";
        video.controls = true;
        var url = "http://" + origin + "/tests/dom/media/test/midflight-redirect.sjs"
                  + "?resource=pixel_aspect_ratio.mp4&type=video/mp4";
        SimpleTest.info("Loading from " + url);
        video.src = url;
        document.body.appendChild(video);

        once(video, "loadeddata", () => {
          is(canReadBack(video), shouldReadBackOnLoad, "Should be able to readback");
          video.play();
        });

        once(video, "error", () => {
          is(canReadBack(video), false, "Should not be able to readback after error");
          removeNodeAndSource(video);
          resolve();
        });

        once(video, "ended", () => {
          ok(false, "Should not be able to playback to end, we should have errored!");
          removeNodeAndSource(video);
          resolve();
        });

      });
    }

    Promise.all([
      runTest("mochi.test:8888", true),
      runTest("example.org", false),
    ]).then(SimpleTest.finish);

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