<!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>

  <script>
    let testName =  "Cannot get XrLightEstimate from stale frame";
    let testFunction = (session, controller, t) => new Promise((resolve) => {
      let lightProbe = null;
      let staleFrame = null;

      function onFrame(time, frame) {
        // Try to get the light estimate (even if it's null), it shouldn't throw.
        let estimate = frame.getLightEstimate(lightProbe);
        staleFrame = frame;

        t.step_timeout(afterFrame, 10);
      }

      function afterFrame() {
        t.step(() => {
          // Attempting to call a method on the frame outside the callback that
          // originally provided it should cause it to throw an exception.
          assert_throws_dom('InvalidStateError', () => staleFrame.getLightEstimate(lightProbe));
        });

        resolve();
      }

      // Request a default lightProbe
      let probeInit = {reflectionFormat: session.preferredReflectionFormat};
      session.requestLightProbe(probeInit).then((probe) => {
        lightProbe = probe;
        session.requestAnimationFrame(onFrame);
      });
    });

    xr_session_promise_test(
      testName,
      testFunction,
      IMMERSIVE_AR_DEVICE,
      'immersive-ar', {'requiredFeatures': ['light-estimation']});

  </script>
</body>