| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 41 of 77 | 47% | 2 of 8 | 75% | 5 | 8 | 1 | 5 | 3 | 4 |
| negationOperationToCeylon(Tree.NegativeOp, Callable) | | 69% | | 75% | 2 | 5 | 0 | 4 | 0 | 1 |
| negationOperationToCeylon$update(Tree.NegativeOp) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| negationOperationToCeylon(Tree.NegativeOp) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| negationOperationToCeylon_() | | 0% | n/a | 1 | 1 | 0 | 0 | 1 | 1 |