| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| |
| description('This tests adopting a shadow tree with an Attr node.'); |
| |
| var referenceCountInSource; |
| var referenceCountInDestination; |
| function runTest() { |
| let startCount = internals.referencingNodeCount(document); |
| |
| const outerHost = document.createElement('shadow-host'); |
| document.body.appendChild(outerHost); |
| const outerRoot = outerHost.attachShadow({mode: 'closed'}); |
| outerRoot.innerHTML = '<span title="foo"></span>'; |
| |
| const innerHost = outerRoot.firstChild; |
| const innerRoot = innerHost.attachShadow({mode: 'closed'}); |
| innerRoot.innerHTML = '<div lang="en"></div>'; |
| |
| const outerAttr = innerHost.attributes[0]; |
| const outerAttrNodeList = outerAttr.childNodes; |
| const innerAttr = innerRoot.firstChild.attributes[0]; |
| const innerAttrNodeList = innerAttr.childNodes; |
| |
| referenceCountInSource = internals.referencingNodeCount(document) - startCount; |
| |
| const iframe = document.createElement('iframe'); |
| document.body.appendChild(iframe); |
| |
| startCount = internals.referencingNodeCount(iframe.contentDocument); |
| iframe.contentDocument.body.appendChild(outerHost); |
| referenceCountInDestination = internals.referencingNodeCount(iframe.contentDocument) - startCount; |
| |
| iframe.remove(); |
| } |
| |
| if (!window.GCController || !window.internals) |
| testFailed('This test requires testRunner, internals, and GCController objects.'); |
| else { |
| runTest(); |
| GCController.collect(); |
| shouldBe('referenceCountInDestination', 'referenceCountInSource'); |
| } |
| |
| </script> |
| </body> |
| </html> |
