<!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>
