ctor-gain.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-gainnode-interface/ctor-gain.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>

      Test Constructor: Gain

    </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/audit.js"></script>

    <script src="/webaudio/resources/audionodeoptions.js"></script>

  </head>

  <body>

    <script id="layout-test-code">

      let context;

      let audit = Audit.createTaskRunner();

      audit.define('initialize', (task, should) => {

        context = initializeContext(should);

        task.done();

});

      audit.define('invalid constructor', (task, should) => {

        testInvalidConstructor(should, 'GainNode', context);

        task.done();

});

      audit.define('default constructor', (task, should) => {

        let prefix = 'node0';

        let node = testDefaultConstructor(should, 'GainNode', context, {

          prefix: prefix,

          numberOfInputs: 1,

          numberOfOutputs: 1,

          channelCount: 2,

          channelCountMode: 'max',

          channelInterpretation: 'speakers'

});

        testDefaultAttributes(should, node, prefix, [{name: 'gain', value: 1}]);

        task.done();

});

      audit.define('test AudioNodeOptions', (task, should) => {

        testAudioNodeOptions(should, context, 'GainNode');

        task.done();

});

      audit.define('constructor with options', (task, should) => {

        let node;

        let options = {

          gain: -2,

};

        should(

            () => {

              node = new GainNode(context, options);

},

            'node1 = new GainNode(c, ' + JSON.stringify(options) + ')')

            .notThrow();

        should(node instanceof GainNode, 'node1 instanceof GainNode')

            .beEqualTo(true);

        should(node.gain.value, 'node1.gain.value').beEqualTo(options.gain);

        should(node.channelCount, 'node1.channelCount').beEqualTo(2);

        should(node.channelCountMode, 'node1.channelCountMode')

            .beEqualTo('max');

        should(node.channelInterpretation, 'node1.channelInterpretation')

            .beEqualTo('speakers');

        task.done();

});

      audit.run();

    </script>

  </body>

</html>