ctor-channelsplitter.html

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

<!DOCTYPE html>

<html>

  <head>

    <title>

      Test Constructor: ChannelSplitter

    </title>

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

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

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

  </head>

  <body>

    <script>

      test(() => {

        context = new OfflineAudioContext(1, 1, 48000);

      }, 'initialize');

      test(() => {

        testInvalidConstructor_W3CTH('ChannelSplitterNode');

      }, 'invalid constructor');

      test(() => {

        testDefaultConstructor_W3CTH('ChannelSplitterNode', context, {

          prefix: 'node0',

          numberOfInputs: 1,

          numberOfOutputs: 6,

          channelCount: 6,

          channelCountMode: 'explicit',

          channelInterpretation: 'discrete',

});

      }, 'default constructor');

      test(() => {

        const node = new ChannelSplitterNode(context);

        node.channelCount = 6;

        assert_equals(node.channelCount, 6, 'channelCount stays 6');

        node.channelCountMode = 'explicit';

        assert_equals(node.channelCountMode, 'explicit',

            'channelCountMode stays explicit');

        node.channelInterpretation = 'discrete';

        assert_equals(node.channelInterpretation, 'discrete',

            'channelInterpretation stays discrete');

        assert_throws_dom(

            'InvalidStateError', () => {

              node.channelCount = 7;

},

            'channelCount immutable');

        assert_throws_dom(

            'InvalidStateError', () => {

              node.channelCountMode = 'max';

},

            'channelCountMode immutable');

        assert_throws_dom(

            'InvalidStateError', () => {

              node.channelInterpretation = 'speakers';

},

            'channelInterpretation immutable');

      }, 'AudioNodeOptions immutability');

      test(() => {

        const options = {

          numberOfInputs: 3,

          numberOfOutputs: 9,

          channelInterpretation: 'discrete',

};

        const node = new ChannelSplitterNode(context, options);

        assert_equals(

            node.numberOfInputs,

1,

            `success ${JSON.stringify(options)} – numberOfInputs`);

        assert_equals(

            node.numberOfOutputs,

            options.numberOfOutputs,

            ` success ${JSON.stringify(options)} – numberOfOutputs`);

        assert_equals(

            node.channelInterpretation,

            'discrete',

            `success ${JSON.stringify(options)} – channelInterpretation`);

        const badOutputs = {numberOfOutputs: 99};

        assert_throws_dom(

            'IndexSizeError',

            () => new ChannelSplitterNode(context, badOutputs),

            `error ${JSON.stringify(badOutputs)} – IndexSizeError`);

        const badCount = {channelCount: 3};

        assert_throws_dom(

            'InvalidStateError',

            () => new ChannelSplitterNode(context, badCount),

            `error ${JSON.stringify(badCount)} – InvalidStateError`);

        const badMode = {channelCountMode: 'max'};

        assert_throws_dom(

            'InvalidStateError',

            () => new ChannelSplitterNode(context, badMode),

            `error ${JSON.stringify(badMode)} – InvalidStateError`);

      }, 'constructor options');

    </script>

  </body>

</html>