| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 45 of 488 | 90% | 18 of 79 | 77% | 17 | 57 | 7 | 105 | 2 | 15 |
| mutator(int) | | 84% | | 91% | 1 | 7 | 1 | 16 | 0 | 1 |
| has(int) | | 0% | | 0% | 3 | 3 | 2 | 2 | 1 | 1 |
| get(int) | | 0% | | 0% | 2 | 2 | 4 | 4 | 1 | 1 |
| isModified(int) | | 96% | | 70% | 3 | 6 | 0 | 4 | 0 | 1 |
| merge(CUnion) | | 100% | | 83% | 2 | 8 | 0 | 18 | 0 | 1 |
| addTo(int, Object) | | 100% | | 86% | 2 | 9 | 0 | 18 | 0 | 1 |
| set(int, Object) | | 100% | | 100% | 0 | 6 | 0 | 16 | 0 | 1 |
| CUnion.Builder(CUnion) | | 100% | | 50% | 1 | 2 | 0 | 7 | 0 | 1 |
| clear(int) | | 100% | | 75% | 1 | 3 | 0 | 7 | 0 | 1 |
| validate() | | 100% | | 100% | 0 | 2 | 0 | 4 | 0 | 1 |
| CUnion.Builder(CUnionDescriptor) | | 100% | n/a | 0 | 1 | 0 | 5 | 0 | 1 | |
| isSet(int) | | 100% | | 75% | 1 | 3 | 0 | 1 | 0 | 1 |
| valid() | | 100% | | 75% | 1 | 3 | 0 | 1 | 0 | 1 |
| build() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| descriptor() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |