| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"> |
| <link rel="help" href="https://github.com/whatwg/html/issues/10854"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| test(() => { |
| assert_equals(document.customElementRegistry, window.customElements); |
| }, 'customElementRegistry on a document should return window.customElements by default'); |
| |
| test(() => { |
| const doc = document.implementation.createHTMLDocument('foo') |
| assert_equals(doc.customElementRegistry, null); |
| }, 'customElementRegistry on a document without a browsing context should return null'); |
| |
| test((t) => { |
| const frame = document.createElement('iframe'); |
| t.add_cleanup(() => frame.remove()); |
| document.body.appendChild(frame); |
| assert_equals(frame.contentDocument.customElementRegistry, frame.contentWindow.customElements); |
| }, 'customElementRegistry on a document of a connected iframe should return contentWindow.customElements'); |
| |
| test((t) => { |
| const frame = document.createElement('iframe'); |
| document.body.appendChild(frame); |
| const doc = frame.contentDocument; |
| const registry = frame.contentWindow.customElements; |
| frame.remove(); |
| assert_equals(doc.customElementRegistry, registry); |
| }, 'customElementRegistry on a document of a disconnected iframe should return contentWindow.customElements'); |
| |
| </script> |
| </body> |
| </html> |
