| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 18 of 57 | 68% | 4 of 6 | 33% | 4 | 7 | 2 | 8 | 1 | 4 |
| run(ThreadContext, OpenFile.InternalWriteStruct) | | 69% | | 25% | 2 | 3 | 0 | 5 | 0 | 1 |
| wakeup(RubyThread, OpenFile.InternalWriteStruct) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| static {...} | | 88% | | 50% | 1 | 2 | 0 | 1 | 0 | 1 |
| {...} | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |