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products/sources/formale Sprachen/C/Firefox/dom/media/test/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 3 kB

Quelle test_buffered.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/media/test/test_buffered.html

<!DOCTYPE HTML>
<html>

<head>
  <title>Test for Bug 462957</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>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=462957">Mozilla Bug 462957</a>

<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
<script type="application/javascript">

// Test for Bug 462957; HTMLMediaElement.buffered.

var manager = new MediaTestManager;

function testBuffered(e) {
  var v = e.target;

  // The whole media should be buffered...
  var b = v.buffered;
  is(b.length, 1, v._name + ": Should be buffered in one range");
  is(b.start(0), 0, v._name + ": First range start should be media start");
  ok(Math.abs(b.end(0) - v.duration) < 0.1, v._name + ": First range end should be media end");

  // Ensure INDEX_SIZE_ERR is thrown when we access outside the range
  var caught = false;
  try {
    b.start(-1);
  } catch (ex) {
    caught = ex.name == "IndexSizeError" && ex.code == DOMException.INDEX_SIZE_ERR;
  }
  is(caught, true, v._name + ": Should throw INDEX_SIZE_ERR on under start bounds range");

  caught = false;
  try {
    b.end(-1);
  } catch (ex) {
    caught = ex.name == "IndexSizeError" && ex.code == DOMException.INDEX_SIZE_ERR;
  }
  is(caught, true, v._name + ": Should throw INDEX_SIZE_ERR on under end bounds range");

  caught = false;
  try {
    b.start(b.length);
  } catch (ex) {
    caught = ex.name == "IndexSizeError" && ex.code == DOMException.INDEX_SIZE_ERR;
  }
  is(caught, true, v._name + ": Should throw INDEX_SIZE_ERR on over start bounds range");

  caught = false;
  try {
    b.end(b.length);
  } catch (ex) {
    caught = ex.name == "IndexSizeError" && ex.code == DOMException.INDEX_SIZE_ERR;
  }
  is(caught, true, v._name + ": Should throw INDEX_SIZE_ERR on over end bounds range");

  removeNodeAndSource(v);
  manager.finished(v._token);
}

function fetch(url, fetched_callback) {
  var xhr = new XMLHttpRequest();
  xhr.open("GET", url, true);
  xhr.responseType = "blob";

  var loaded = function () {
    if (xhr.status == 200 || xhr.status == 206) {
      ok(true, `${url}: Fetch succeeded, status=${xhr.status}`);
      // Request fulfilled. Note sometimes we get 206... Presumably because either
      // httpd.js or Necko cached the result.
      fetched_callback(window.URL.createObjectURL(xhr.response));
    } else {
      ok(false, `${url}: Fetch failed, headers=${xhr.getAllResponseHeaders()}`);
    }
  };

  xhr.addEventListener("load", loaded);
  xhr.send();
}

function startTest(test, token) {
  // Fetch the media resource using XHR so we can be sure the entire
  // resource is loaded before we test buffered ranges. This ensures
  // we have deterministic behaviour.
  var onfetched = function(uri) {
    var v = document.createElement('video');
    v._token = token;
    v.src = uri;
    v._name = test.name;
    v._test = test;
    v.addEventListener("loadeddata", testBuffered, {once: true});
    document.body.appendChild(v);
  };

  manager.started(token);
  fetch(test.name, onfetched);
}

// Note: No need to set media test prefs, since we're using XHR to fetch
// media data.
manager.runTests(gSeekTests, startTest);

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

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