audio-session/audiosession-default-values.https.html

<!DOCTYPE html>
<title>AudioSession default values</title>
<link rel="help" href="https://w3c.github.io/audio-session/#navigatoraudiosession-interface">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(() => {
  assert_implements("audioSession" in navigator,
                    "navigator.audioSession is not supported");
  assert_true(navigator.audioSession instanceof AudioSession,
              "navigator.audioSession is an AudioSession");
}, "navigator.audioSession exposes an AudioSession instance");

test(() => {
  assert_implements("audioSession" in navigator,
                    "navigator.audioSession is not supported");
  assert_equals(navigator.audioSession.type, "auto",
                "default type is 'auto'");
}, "AudioSession.type defaults to 'auto'");

test(() => {
  assert_implements("audioSession" in navigator,
                    "navigator.audioSession is not supported");
  assert_equals(navigator.audioSession.state, "inactive",
                "default state is 'inactive'");
}, "AudioSession.state defaults to 'inactive'");

test(() => {
  assert_implements("audioSession" in navigator,
                    "navigator.audioSession is not supported");
  assert_equals(navigator.audioSession, navigator.audioSession,
                "navigator.audioSession returns the same object on each access");
}, "navigator.audioSession is [SameObject]");
</script>