| PASS events.length is 2 | |
| PASS events[0] is 'change e' | |
| PASS events[1] is 'change es' | |
| PASS events.length is 3 | |
| PASS events[0] is 'change a' | |
| PASS events[1] is 'change ab' | |
| PASS events[2] is 'change abc' | |
| PASS events.length is 2 | |
| PASS events[0] is 'change e' | |
| PASS events[1] is 'change es' | |
| PASS events.length is 2 | |
| PASS events[0] is 'change e' | |
| PASS events[1] is 'change es' | |