<!DOCTYPE html>
<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_single_view.js"></script>

<script>
function gc()
{
    if (window.GCController)
        return GCController.collect();

    for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
        var s = new String("abc");
    }
}

let testName = "Test object lifetime of Hand Input module";

let fakeDeviceInitParams = TRACKED_IMMERSIVE_SINGLE_VIEWDEVICE;

let testFunction = function(session, fakeDeviceController, t, sessionObjects) {

  let input_source = fakeDeviceController.simulateInputSourceConnection({
    handedness: "none",
    targetRayMode: "tracked-pointer",
    pointerOrigin: VALID_POINTER_TRANSFORM,
    profiles: [],
    simulateHand: true,
  });

  return session.requestReferenceSpace('local')
    .then((referenceSpace) => new Promise((resolve) => {

      function onFrame(time, xrFrame) {
        if (session.inputSources && session.inputSources.length) {

          session.customProperty = 1;
          assert_equals(session.customProperty, 1, "session");
          gc();
          assert_equals(session.customProperty, 1, "session");

          session.inputSources.customProperty = 1;
          assert_equals(session.inputSources.customProperty, 1, "session.inputSources");
          gc();
          assert_equals(session.inputSources.customProperty, 1, "session.inputSources");

          session.inputSources[0].customProperty = 1;
          assert_equals(session.inputSources[0].customProperty, 1, "session.inputSources[0]");
          gc();
          assert_equals(session.inputSources[0].customProperty, 1, "session.inputSources[0]");

          session.inputSources[0].hand.customProperty = 1;
          assert_equals(session.inputSources[0].hand.customProperty, 1, "session.inputSources[0].hand");
          gc();
          assert_equals(session.inputSources[0].hand.customProperty, 1, "session.inputSources[0].hand");
        }
        resolve();
      }
      session.requestAnimationFrame(onFrame);
  }));
};

xr_session_promise_test(
  testName, testFunction, fakeDeviceInitParams, 'immersive-vr', { optionalFeatures: ["hand-tracking"] });

</script>