| Test for observer attribute getters. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS observer.root is null | |
| PASS observer.thresholds is [0] | |
| PASS observer.rootMargin is "0px 0px 0px 0px" | |
| PASS observer.root is rootDiv | |
| PASS observer.thresholds is [0, 0.25, 0.5, 1.0] | |
| PASS observer.rootMargin is "10% 20px 10% 20px" | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |