| <!DOCTYPE html> |
| <head> |
| <title>PerformanceObserver.supportedEntryTypes contains "layoutJank"</title> |
| </head> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| test(() => { |
| if (typeof PerformanceObserver.supportedEntryTypes === "undefined") |
| assert_unreached("supportedEntryTypes is not supported."); |
| assert_greater_than(PerformanceObserver.supportedEntryTypes.indexOf("layoutJank"), -1, |
| "There should be an entry 'layoutJank' in PerformanceObserver.supportedEntryTypes"); |
| }, "supportedEntryTypes contains 'layoutJank'."); |
| </script> |
| </body> |
| </html> |
