test_metadata.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>Test returning metadata from media files with mozGetMetadata()</title>

  <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>

</head>

<body>

<pre id="test">

<div id="output"></div>

<script class="testbody" type="text/javascript">

var manager = new MediaTestManager;

function startTest(test, token) {

  var a = document.createElement('audio');

  a.preload = "metadata";

  a.token = token;

  manager.started(token);

  a.src = test.name;

  a.name = test.name;

  // Tags should not be available immediately.

  var exception_fired = false;

  try {

    a.mozGetMetadata();

  } catch (e) {

    is(e.name, 'InvalidStateError',

       "early mozGetMetadata() should throw InvalidStateError");

    exception_fired = true;

  ok(exception_fired,

     "mozGetMetadata() should throw an exception before HAVE_METADATA");

  // Wait until metadata has loaded.

  a.addEventListener('loadedmetadata', function() {

    // read decoded tags

    let tags = a.mozGetMetadata();

    ok(tags, "mozGetMetadata() should return a truthy value");

    // Dump them out.

    var d = document.getElementById('output');

    var html = '<table>\n';

    html += '<caption><p>Called getMozMetadata()'

    html += ' on '+test.name+'</p></caption>\n';

    html += '<tr><th>tag</th>';

    html += '<th>decoded value</th><th>expected value</th></tr>\n';

    for (let tag in tags) {

      html += '<tr><td>'+tag+'</td>';

      html += '<td>'+tags[tag]+'</td>';

      html += '<td>'+test.tags[tag]+'</td>';

      html += '</tr>\n';

    if (!Object.keys(tags).length) {

      html += '<tr><td colspan=3 align=center><em>no tags</em></td></tr>\n';

    html += '</table>\n';

    var div = document.createElement('div');

    div.innerHTML = html;

    d.appendChild(div);

    // Verify decoded tag values.

    for (let tag in tags) {

      is(tags[tag], test.tags[tag], "Tag '"+tag+"' should match");

    // Verify expected tag values

    for (let tag in test.tags) {

      is(tags[tag], test.tags[tag], "Tag '"+tag+"' should match");

    removeNodeAndSource(a);

    manager.finished(token);

});

manager.runTests(gMetadataTests, startTest);

</script>

</pre>

</body>

</html>