| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 21 of 21 | 0% | 0 of 0 | n/a | 5 | 5 | 8 | 8 | 5 | 5 |
| NullHistorical(Object) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| toString() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| set(Object) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| get() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| get(Duration) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |