<!DOCTYPE html>
<body>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="resources/webxr_util.js"></script>
<script src="resources/webxr_test_constants.js"></script>
<canvas></canvas>
<script>

  let testName =
    "Inline viewer support with no device";

  // Purposefully not connecting a device to ensure that viewer is always
  // supported if that is the only feature requested.
  xr_promise_test(testName,
    (t) => {
    function session_resolves(sessionMode, sessionInit) {
      return navigator.xr.requestSession(sessionMode, sessionInit)
        .then(session => session.end());
    }

    function session_rejects(expected, sessionMode, sessionInit) {
      return promise_rejects_dom(t, expected, navigator.xr.requestSession(sessionMode, sessionInit)
        .then(session => session.end()));
    }

    return session_resolves('inline', {
      // RequestSession with 'viewer' as a required featre should succeed, even
      // without user activation.
      requiredFeatures: ['viewer']
    })
    .then(() => {
      // RequestSession with 'viewer' as an optional feature should succeed, even
      // without user activation.
      return session_resolves('inline', {
        optionalFeatures: ['viewer']
      })
    })
    .then(() => {
      // RequestSession with no requirements should succeed.
      return session_resolves('inline', {});
    })
    .then(() => {
      // RequestSession with non-viewer optional features should fail
      // without user activation.
      return session_rejects("SecurityError", 'inline', {
        optionalFeatures: ['local']
      });
    })
    .then(() => {
      // RequestSession with non-viewer required features should fail
      // without user activation.
      return session_rejects("SecurityError", 'inline', {
        optionalFeatures: ['local']
      });
    })
    .then(() => promise_simulate_user_activation(() => {
      // RequestSession with unsupported optional features should succeed.
      return session_resolves('inline', {
        requiredFeatures: ['viewer'],
        optionalFeatures: ['local']
      })
    }))
    .then(() => promise_simulate_user_activation(() => {
      // Request with unsupported required features should reject.
      return session_rejects("NotSupportedError", 'inline', {
          requiredFeatures: ['local']
      });
    }));
  });

</script>
</body>
