audiosource-onended.html

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-onended.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>

      Test Onended Event Listener for AudioBufferSourceNode and OscillatorNode

    </title>

    <script src="/resources/testharness.js"></script>

    <script src="/resources/testharnessreport.js"></script>

    <script src="/webaudio/resources/audit-util.js"></script>

  </head>

  <body>

    <script>

      const sampleRate = 44100;

      const renderLengthSeconds = 1;

      const renderLengthFrames = renderLengthSeconds * sampleRate;

      // Length of the source buffer.  Anything less than the render length is

      // fine.

      const sourceBufferLengthFrames = renderLengthFrames / 8;

      // When to stop the oscillator.  Anything less than the render time is

      // fine.

      const stopTime = renderLengthSeconds / 8;

      promise_test(async (t) => {

        // Test that the onended event for an AudioBufferSourceNode is fired

        // when it is set directly.

        const context = new OfflineAudioContext(

            1, renderLengthFrames, sampleRate);

        const buffer = new AudioBuffer({length: sourceBufferLengthFrames,

            numberOfChannels: 1, sampleRate: context.sampleRate});

        const source = new AudioBufferSourceNode(context, {buffer: buffer});

        source.connect(context.destination);

        source.onended = (e) => {

          assert_true(

              true, 'AudioBufferSource.onended called when ended set directly');

};

        source.start();

        await context.startRendering();

      }, 'absn-set-onended: onended event fires for AudioBufferSourceNode ' +

          'when set directly');

      promise_test(async (t) => {

        // Test that the onended event for an AudioBufferSourceNode is fired

        // when addEventListener is used to set the handler.

        const context = new OfflineAudioContext(

            1, renderLengthFrames, sampleRate);

        const buffer = new AudioBuffer({length: sourceBufferLengthFrames,

            numberOfChannels: 1, sampleRate: context.sampleRate});

        const source = new AudioBufferSourceNode(context, {buffer: buffer});

        source.connect(context.destination);

        source.addEventListener('ended', (e) => {

          assert_true(

              true,

              'AudioBufferSource.onended called when using addEventListener');

});

        source.start();

        await context.startRendering();

      }, 'absn-add-listener: onended event fires for AudioBufferSourceNode ' +

          'when using addEventListener');

      promise_test(async (t) => {

        // Test that the onended event for an OscillatorNode is fired when it is

        // set directly.

        const context = new OfflineAudioContext(

            1, renderLengthFrames, sampleRate);

        const source = new OscillatorNode(context);

        source.connect(context.destination);

        source.onended = (e) => {

          assert_true(

              true, 'Oscillator.onended called when ended set directly');

};

        source.start();

        source.stop(stopTime);

        await context.startRendering();

      }, 'osc-set-onended: onended event fires for OscillatorNode ' +

          'when set directly');

      promise_test(async (t) => {

        // Test that the onended event for an OscillatorNode is fired when

        // addEventListener is used to set the handler.

        const context = new OfflineAudioContext(

            1, renderLengthFrames, sampleRate);

        const source = new OscillatorNode(context);

        source.connect(context.destination);

        source.addEventListener('ended', (e) => {

          assert_true(

              true, 'Oscillator.onended called when using addEventListener');

});

        source.start();

        source.stop(stopTime);

        await context.startRendering();

      }, 'osc-add-listener: onended event fires for OscillatorNode ' +

          'when using addEventListener');

    </script>

  </body>

</html>