testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/audioworklet-suspend.https.html
author Karl Tomlinson <karlt+@karlt.net>
Thu, 07 Nov 2019 00:47:33 +0000
changeset 502537 8ac99aff562c3065c7ad806e4ee54f1f85134668
parent 477009 bdbb5a9c6dc3790263efc2392dbef6c82aea2876
permissions -rw-r--r--
bug 1592781 auto-finish TaskRunner Tasks created from async functions r=jgraham Differential Revision: https://phabricator.services.mozilla.com/D51567

<!DOCTYPE html>
<html>
  <head>
    <title>
      Test if activation of worklet thread does not resume context rendering.
    </title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/webaudio/resources/audit.js"></script>
  </head>
  <body>
    <script id="layout-test-code">
      const audit = Audit.createTaskRunner();
      const context = new AudioContext();
      const filePath = 'processors/dummy-processor.js';

      context.suspend();

      // Suspends the context right away and then activate worklet. The current
      // time must not advance since the context is suspended.
      audit.define(
          {label: 'load-worklet-and-suspend'},
          async (task, should) => {
            await context.audioWorklet.addModule(filePath);
            const suspendTime = context.currentTime;
            const dummy = new AudioWorkletNode(context, 'dummy');
            dummy.connect(context.destination);
            return task.timeout(() => {
              should(context.currentTime === suspendTime,
                     'context.currentTime did not change after worklet started')
                  .beTrue();
              should(context.state, 'context.state').beEqualTo('suspended');
            }, 500);
          });

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