| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../resources/accessibility-helper.js"></script> |
| <script src="../resources/js-test.js"></script> |
| </head> |
| <body> |
| |
| <button id="button">Click me</button> |
| |
| <script> |
| var testOutput = "This test ensures that AX doesn't become unresponsive when a page is reloaded.\n\n"; |
| |
| if (window.accessibilityController) { |
| window.jsTestIsAsync = true; |
| |
| const axButton = accessibilityController.accessibleElementById("button"); |
| const storageKey = "page-reload-deadlock-webkit-test-did-reload"; |
| if (window.localStorage.getItem(storageKey) === null) { |
| window.localStorage.setItem(storageKey, "true") |
| accessibilityController.setRetainedElement(axButton); |
| // Queue an arbitrary update. This is required to make the bug reproduce because it causes an acquisition of a lock |
| // used to retrieve the isolated tree for the page associated with this button. |
| document.getElementById("button").setAttribute("disabled", "true"); |
| // Note that this reloads the test, too. |
| internals.forceReload(true); |
| } else { |
| window.localStorage.removeItem(storageKey); |
| // Request the role from the retained button. This action (requesting an attribute from a wrapper that has had its |
| // AX object destroyed by page reload) is currently required to trigger isolated tree destruction, but ideally that wouldn't be the case. |
| // This bug is tracked in https://bugs.webkit.org/show_bug.cgi?id=250345. |
| testOutput += `Role of #button element retained from first page load: ${accessibilityController.retainedElement().role}\n`; |
| testOutput += `Role of #button element from second page load: ${axButton.role}\n`; |
| |
| testOutput += `PASS: Test didn't timeout.`; |
| debug(testOutput); |
| finishJSTest(); |
| } |
| } |
| </script> |
| </body> |
| </html> |
| |
