| <title>Test document picture-in-picture copies Document mode when it's quirks mode</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <body> |
| <script> |
| promise_test(async (t) => { |
| assert_equals(document.compatMode, "BackCompat", "The opener document should be on quirks mode"); |
| await test_driver.bless('request PiP window'); |
| const pipWindow = await documentPictureInPicture.requestWindow(); |
| assert_equals(pipWindow.document.compatMode, "BackCompat", "The picture-in-picture document should be on quirks mode"); |
| }); |
| </script> |
| </body> |
