audiosource-time-limits.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>

      Test Scheduled Sources with Huge Time Limits

    </title>

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

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

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

    <script src="/webaudio/resources/audioparam-testing.js"></script>

  </head>

  <body>

    <script>

      const sampleRate = 48000;

      const renderFrames = 1000;

      promise_test(async () => {

        // We only need to generate a small number of frames for this test.

        const context = new OfflineAudioContext(1, renderFrames, sampleRate);

        // Constant source of amplitude 1, looping.

        const src = new AudioBufferSourceNode(context, {

          buffer: createConstantBuffer(context, 1, 1),

          loop: true,

});

        // Create the graph and go!

        const endTime = 1e300;

        src.connect(context.destination);

        src.start();

        src.stop(endTime);

        const resultBuffer = await context.startRendering();

        const result = resultBuffer.getChannelData(0);

        assert_array_equals(

            result,

            new Float32Array(result.length).fill(1),

            `Output from AudioBufferSource.stop(${endTime})`);

      }, 'buffersource: huge stop time');

      promise_test(async () => {

        // We only need to generate a small number of frames for this test.

        const context = new OfflineAudioContext(1, renderFrames, sampleRate);

        const src = new OscillatorNode(context);

        // Create the graph and go!

        const endTime = 1e300;

        src.connect(context.destination);

        src.start();

        src.stop(endTime);

        const resultBuffer = await context.startRendering();

        const result = resultBuffer.getChannelData(0);

        // The buffer should not be empty.  Just find the max and verify

        // that it's not zero.

        const max = Math.max(...result);

        assert_greater_than(

            max, 0, `Peak amplitude from oscillator.stop(${endTime})`);

      }, 'oscillator: huge stop time');

    </script>

  </body>

</html>