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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 5 kB

Quelle test_mediarecorder_state_transition.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/media/test/test_mediarecorder_state_transition.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Test MediaRecorder State Transition</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">
<script class="testbody" type="text/javascript">
var manager = new MediaTestManager;

// List of operation tests for media recorder objects to verify if running
// these operations should result in an exception or not
var operationTests = [
  {
    operations: ['stop'],
    isValid: true
  },
  {
    operations: ['requestData'],
    isValid: false
  },
  {
    operations: ['pause'],
    isValid: false
  },
  {
    operations: ['resume'],
    isValid: false
  },
  {
    operations: ['start'],
    isValid: true
  },
  {
    operations: ['start'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'pause'],
    isValid: true
  },
  {
    operations: ['start', 'pause'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'start'],
    isValid: false
  },
  {
    operations: ['start', 'resume'],
    isValid: true
  },
  {
    operations: ['pause', 'start'],
    isValid: false
  },
  {
    operations: ['resume', 'start'],
    isValid: false
  },
  {
    operations: ['requestData', 'start'],
    isValid: false
  },
  {
    operations: ['stop', 'start'],
    isValid: true
  },
  {
    operations: ['start', 'stop'],
    isValid: true
  },
  {
    operations: ['start', 'stop'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'requestData'],
    isValid: true
  },
  {
    operations: ['start', 'requestData'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'pause', 'stop'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'start'],
    isValid: false
  },
  {
    operations: ['start', 'pause', 'pause'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'requestData'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'resume'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'resume'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'resume', 'resume'],
    isValid: true
  },
  {
    operations: ['start', 'resume', 'resume'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'resume', 'stop'],
    isValid: true
  },
  {
    operations: ['start', 'resume', 'stop'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'start'],
    isValid: true
  },
  {
    operations: ['start', 'stop', 'start'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'pause'],
    isValid: false
  },
  {
    operations: ['start', 'stop', 'resume'],
    isValid: false
  },
  {
    operations: ['start', 'stop', 'requestData'],
    isValid: false
  },
  {
    operations: ['start', 'stop', 'stop'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'resume', 'resume'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'resume', 'resume'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'pause', 'pause', 'resume'],
    isValid: true
  },
  {
    operations: ['start', 'pause', 'pause', 'resume'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'start', 'stop'],
    isValid: true
  },
  {
    operations: ['start', 'stop', 'start', 'stop'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'start', 'pause'],
    isValid: true
  },
  {
    operations: ['start', 'stop', 'start', 'pause'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'start', 'resume'],
    isValid: true
  },
  {
    operations: ['start', 'stop', 'start', 'resume'],
    isValid: true,
    timeSlice: 200
  },
  {
    operations: ['start', 'stop', 'start', 'requestData'],
    isValid: true
  },
  {
    operations: ['start', 'stop', 'start', 'requestData'],
    isValid: true,
    timeSlice: 200
  },
];

/**
* Runs through each available state transition test by running all
* available operations on a media recorder object. Then, we report
* back if the test was expected through an exception or not.
*
* @param {MediaStream} testStream the media stream used for media recorder
*                                 operation tests
*/
function runStateTransitionTests(testStream) {
  for (const operationTest of operationTests) {
    var mediaRecorder = new MediaRecorder(testStream);
    var operationsString = operationTest.operations.toString();

    try {
      for (const operation of operationTest.operations) {
        if (operationTest.timeSlice && operation === 'start') {
          operationsString += ' with timeslice ' + operationTest.timeSlice;
          mediaRecorder[operation](operationTest.timeSlice);
        } else {
          mediaRecorder[operation]();
        }
      }

      ok(operationTest.isValid, `${operationsString} should succeed`);
    } catch (err) {
      if (operationTest.isValid) {
        ok(false, `${operationsString} failed unexpectedly with ${err.name}`);
      } else {
        is(err.name, "InvalidStateError",
          `${operationsString} expected to fail with InvalidStateError`);
      }
    }
  }
}

/**
* Starts a test on every media recorder file included to check that various
* state transition flows that can happen in the media recorder object throw
* exceptions when they are expected to and vice versa.
*/
function startTest(test, token) {
  var element = document.createElement('audio');

  element.token = token;
  manager.started(token);

  element.src = test.name;
  element.test = test;
  element.stream = element.mozCaptureStream();

  element.oncanplaythrough = function () {
    element.oncanplaythrough = null;
    runStateTransitionTests(element.stream);
    manager.finished(token);
  };

  element.play();
}

manager.runTests(gMediaRecorderTests, startTest);
</script>
</pre>
</body>
</html>

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