| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 6 of 81 | 92% | 4 of 12 | 66% | 4 | 9 | 3 | 20 | 0 | 3 |
| checkTopN(TopN) | | 83% | | 60% | 4 | 6 | 3 | 11 | 0 | 1 |
| visitPhysicalTopN(PhysicalTopN, CascadesContext) | | 100% | | 100% | 0 | 2 | 0 | 8 | 0 | 1 |
| TopNScanOpt() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |