chromium/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-delaynode-interface/ctor-delay.html

<!DOCTYPE html>
<html>
  <head>
    <title>
      Test Constructor: Delay
    </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, 'DelayNode', context);
        task.done();
      });

      audit.define('default constructor', (task, should) => {
        let prefix = 'node0';
        let node = testDefaultConstructor(should, 'DelayNode', context, {
          prefix: prefix,
          numberOfInputs: 1,
          numberOfOutputs: 1,
          channelCount: 2,
          channelCountMode: 'max',
          channelInterpretation: 'speakers'
        });

        testDefaultAttributes(
            should, node, prefix, [{name: 'delayTime', value: 0}]);

        task.done();
      });

      audit.define('test AudioNodeOptions', (task, should) => {
        testAudioNodeOptions(should, context, 'DelayNode');
        task.done();
      });

      audit.define('constructor options', (task, should) => {
        let node;
        let options = {
          delayTime: 0.5,
          maxDelayTime: 1.5,
        };

        should(
            () => {
              node = new DelayNode(context, options);
            },
            'node1 = new DelayNode(c, ' + JSON.stringify(options) + ')')
            .notThrow();

        should(node.delayTime.value, 'node1.delayTime.value')
            .beEqualTo(options.delayTime);
        should(node.delayTime.maxValue, 'node1.delayTime.maxValue')
            .beEqualTo(options.maxDelayTime);

        task.done();
      });

      audit.run();
    </script>
  </body>
</html>