This is a manual test. To run the tests, open the browser's developer tools
  and navigate to the Accessibility pane (may need to activate it in Settings),
  or use an OS-level accessibility inspector, and verify that the accessible
  name of the list markers matches the text in the list items (excluding
  quotation marks).
  
  The following issue discusses ways to automate these tests:
  
  https://github.com/web-platform-tests/wpt/issues/8355