| Tests if typing an arrow key dispatches |Focus| and |MarkDirty| a11y events. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| Focused | |
| Focused | |
| PASS Received MarkDirty | |
| PASS Received MarkDirty | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |