| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 44 of 107 | 59% | 14 of 28 | 50% | 16 | 18 | 1 | 5 | 3 | 4 |
| keySubscriptToCeylon(Tree.Element, Callable) | | 77% | | 50% | 13 | 15 | 0 | 4 | 0 | 1 |
| keySubscriptToCeylon$update(Tree.Element) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| keySubscriptToCeylon(Tree.Element) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| keySubscriptToCeylon_() | | 0% | n/a | 1 | 1 | 0 | 0 | 1 | 1 |