constant-source-basic.html | Explore in Territory

<!DOCTYPE html>
<html>
  <head>
    <title>
      Basic ConstantSourceNode Tests
    </title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="../../resources/audit-util.js"></script>
    <script src="../../resources/audit.js"></script>
    <script src="../../resources/start-stop-exceptions.js"></script>
  </head>
  <body>
    <script id="layout-test-code">
      let context = new AudioContext();

      let audit = Audit.createTaskRunner();

      audit.define('createConstantSource()', (task, should) => {
        let node;
        let prefix = 'Factory method: ';

        should(() => {
          node = context.createConstantSource();
        }, prefix + 'node = context.createConstantSource()').notThrow();
        should(
            node instanceof ConstantSourceNode,
            prefix + 'node instance of ConstantSourceNode')
            .beEqualTo(true);

        verifyNodeDefaults(should, node, prefix);

        task.done();
      });

      audit.define('new ConstantSourceNode()', (task, should) => {
        let node;
        let prefix = 'Constructor: ';

        should(() => {
          node = new ConstantSourceNode(context);
        }, prefix + 'node = new ConstantSourceNode()').notThrow();
        should(
            node instanceof ConstantSourceNode,
            prefix + 'node instance of ConstantSourceNode')
            .beEqualTo(true);


        verifyNodeDefaults(should, node, prefix);

        task.done();
      });

      audit.define('start/stop exceptions', (task, should) => {
        let node = new ConstantSourceNode(context);

        testStartStop(should, node);
        task.done();
      });

      function verifyNodeDefaults(should, node, prefix) {
        should(node.numberOfInputs, prefix + 'node.numberOfInputs')
            .beEqualTo(0);
        should(node.numberOfOutputs, prefix + 'node.numberOfOutputs')
            .beEqualTo(1);
        should(node.channelCount, prefix + 'node.channelCount').beEqualTo(2);
        should(node.channelCountMode, prefix + 'node.channelCountMode')
            .beEqualTo('max');
        should(
            node.channelInterpretation, prefix + 'node.channelInterpretation')
            .beEqualTo('speakers');

        should(node.offset.value, prefix + 'node.offset.value').beEqualTo(1);
        should(node.offset.defaultValue, prefix + 'node.offset.defaultValue')
            .beEqualTo(1);
        should(node.offset.minValue, prefix + 'node.offset.minValue')
            .beEqualTo(Math.fround(-3.4028235e38));
        should(node.offset.maxValue, prefix + 'node.offset.maxValue')
            .beEqualTo(Math.fround(3.4028235e38));
      }

      audit.run();
    </script>
  </body>
</html>
chromium/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-constantsourcenode-interface/constant-source-basic.html
