<!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 immersiveTestName = "XRFrame methods throw exceptions outside of the " +
      "requestAnimationFrame callback for immersive sessions";
    let nonImmersiveTestName = "XRFrame methods throw exceptions outside of the " +
      "requestAnimationFrame callback for non-immersive sessions";

    let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE;

    let testFunction = (testSession, testController, t) => new Promise((resolve) => {
      let staleFrame = null;
      let currentReferenceSpace = null;
      let currentViewerSpace = null;

      function onFrame(time, xrFrame) {
        t.step(() => {
          assert_true(xrFrame instanceof XRFrame);
        });

        staleFrame = xrFrame;
        step_timeout(afterFrame, 0);
      }

      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.getViewerPose(currentReferenceSpace));
          assert_throws_dom('InvalidStateError', () => staleFrame.getPose(currentViewerSpace, currentReferenceSpace));
        });

        // Test does not complete until the this function has executed.
        resolve();
      }

      testSession.requestReferenceSpace('viewer').then((viewerSpace) => {
        currentViewerSpace = viewerSpace;
        testSession.requestReferenceSpace('local').then((referenceSpace) => {
          currentReferenceSpace = referenceSpace;
          testSession.requestAnimationFrame(onFrame);
        });
      });
    });

    xr_session_promise_test(immersiveTestName, testFunction,
      fakeDeviceInitParams, 'immersive-vr');
    xr_session_promise_test(nonImmersiveTestName, testFunction,
      fakeDeviceInitParams, 'inline', { 'requiredFeatures': ['local'] });

  </script>
</body>