| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 6 of 61 | 90% | 1 of 6 | 83% | 2 | 8 | 3 | 16 | 1 | 5 |
| cleanup() | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| add(KeyRangeIterator) | | 91% | | 75% | 1 | 3 | 1 | 7 | 0 | 1 |
| buildIterator() | | 100% | | 100% | 0 | 2 | 0 | 3 | 0 | 1 |
| KeyRangeUnionIterator.Builder(int) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 | |
| rangeCount() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |