This tests ensures that an event listener on an attribute node inside a shadow DOM is properly unregistered when parent element of the attribute is moved to a new document.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS internals.touchStartOrMoveEventHandlerCount(document) is 1
PASS internals.touchStartOrMoveEventHandlerCount(document) is 0
PASS successfullyParsed is true
TEST COMPLETE