| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 213 of 213 | 0% | 26 of 26 | 0% | 25 | 25 | 63 | 63 | 12 | 12 |
| union() | | 0% | | 0% | 10 | 10 | 30 | 30 | 1 | 1 |
| unionWithNull(Geometry, Geometry) | | 0% | | 0% | 5 | 5 | 7 | 7 | 1 | 1 |
| UnaryUnionOp(Collection, GeometryFactory) | | 0% | n/a | 1 | 1 | 6 | 6 | 1 | 1 | |
| UnaryUnionOp(Collection) | | 0% | n/a | 1 | 1 | 5 | 5 | 1 | 1 | |
| UnaryUnionOp(Geometry) | | 0% | n/a | 1 | 1 | 5 | 5 | 1 | 1 | |
| unionNoOpt(Geometry) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| union(Collection, GeometryFactory) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| union(Collection) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| union(Geometry) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| extract(Collection) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| extract(Geometry) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| setUnionFunction(UnionStrategy) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 |