| PASS Test calling waitUntil in a different task without an existing extension throws | |
| PASS Test calling waitUntil in a different microtask without an existing extension throws | |
| PASS Test calling waitUntil in a different task with an existing extension succeeds | |
| PASS Test calling waitUntil with an existing extension promise handler succeeds | |
| PASS Test calling waitUntil at the end of the microtask turn throws | |
| PASS Test calling waitUntil after the current extension expired in a different task fails | |
| PASS Test calling waitUntil on a script constructed ExtendableEvent throws exception | |
| PASS Test calling waitUntil asynchronously with pending respondWith promise. | |
| PASS Test calling waitUntil synchronously inside microtask of respondWith promise. | |
| PASS Test calling waitUntil asynchronously inside microtask of respondWith promise. | |