document-level-touchmove-event-listener-passive-by-default.html

<!DOCTYPE html>
<title>Default passive document level touchmove event listener test</title>
<link rel="help" href="https://github.com/WICG/interventions/issues/35">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../../resources/gesture-util.js"></script>
<body>
<div id="touchDiv">
</div>
</body>
<style>
#touchDiv {
  width: 100px;
  height: 100px;
}
</style>
<script>

function injectInput() {
  const touch_div = document.getElementById("touchDiv");
  const rect = touch_div.getBoundingClientRect();
  const x = rect.left + rect.width / 2;
  const y = rect.top + rect.height / 2;
  return smoothScroll(10, x, y, GestureSourceType.TOUCH_INPUT, "down");
}

window.onload = async () => {
  promise_test (async () => {
    const touchMovePromise = waitForEvent(document, 'touchmove');
    await waitForCompositorCommit();
    await injectInput();
    await touchMovePromise.then((event) => {
      assert_false(event.cancelable);
      event.preventDefault();
    });
  }, "Touchmove events are non-cancelable since the event listener is " +
     "treated as passive.");
};

</script>

chromium/third_party/blink/web_tests/fast/scrolling/document-level-touchmove-event-listener-passive-by-default.html