realtimeanalyser-basic.html

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-basic.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>

      Basic AnalyserNode test

    </title>

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

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

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

  </head>

  <body>

    <script>

      test(() => {

        const context = new AudioContext();

        const analyser = new AnalyserNode(context);

        assert_equals(

            analyser.numberOfInputs, 1, 'Number of inputs for AnalyserNode');

        assert_equals(

            analyser.numberOfOutputs, 1, 'Number of outputs for AnalyserNode');

        assert_equals(analyser.minDecibels, -100, 'Default minDecibels value');

        assert_equals(analyser.maxDecibels, -30, 'Default maxDecibels value');

        assert_equals(

            analyser.smoothingTimeConstant,

            0.8,

            'Default smoothingTimeConstant value');

        let expectedValue = -50 - (1 / 3);

        analyser.minDecibels = expectedValue;

        assert_equals(

            analyser.minDecibels, expectedValue,

            `node.minDecibels = ${expectedValue}`);

        expectedValue = -40 - (1 / 3);

        analyser.maxDecibels = expectedValue;

        assert_equals(

            analyser.maxDecibels, expectedValue,

            `node.maxDecibels = ${expectedValue}`);

      }, 'Basic AnalyserNode test');

    </script>

  </body>

</html>