third_party/WebKit/LayoutTests/fast/events/touch/touch-action-double-remove.html

   1 <!DOCTYPE html>
   2 <style>
   3 br {
   4     touch-action: none;
   5 }
   6 </style>
   7 <!--
   8 This is a regression test against a double unregistration of a touch action
   9 event handler on a <br> element. When the document finishes loading and is
  10 attached to the view, all of its LayoutObjects are destroyed and recreated. If
  11 a LayoutObject had a touch action associated with it, it will need to remove
  12 the fake event handler it registered for it in the EventHandlerRegistry.
  13 However, when the document gets detached, all of the event handlers within it
  14 are automatically unregistered. When the LayoutObject tries to unregister its
  15 own handler after the fact, it is no longer there and we hit an assertion
  16 failure.
  17
  18 Note that this test doesn't use js-test.js because it also inadvertedly
  19 triggers the same bug by appending <br> elements to the document.
  20
  21 The test passes if it doesn't trigger an assertion failure in a debug build.
  22 -->
  23 <script>
  24 if (window.testRunner)
  25     testRunner.dumpAsText();
  26 </script>
  27 PASS<br>