| <!DOCTYPE html> |
| <link rel=author href="mailto:[email protected]"> |
| <link rel=help href="https://chromium-review.googlesource.com/c/chromium/src/+/4094463/8/third_party/blink/renderer/core/html/html_element.cc#1404"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <div id=popover1 popover=auto>popover1</div> |
| <div id=popover2 popover=auto>popover2</div> |
| |
| <script> |
| test(() => { |
| const popover2 = document.getElementById('popover2'); |
| popover1.showPopover(); |
| popover1.addEventListener('beforetoggle', () => { |
| popover2.remove(); |
| }); |
| assert_throws_dom('InvalidStateError', () => popover2.showPopover(), |
| "popover1's beforetoggle event handler removes popover2 so showPopover should throw."); |
| assert_false(popover2.matches(':popover-open'), 'popover2 should not match :popover-open once it is closed.'); |
| }, 'Removing a popover while it is opening and force closing another popover should throw an exception.'); |
| </script> |
