| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 11 of 110 | 90% | 1 of 4 | 75% | 2 | 11 | 2 | 25 | 1 | 9 |
| RubyYielder(Ruby) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| checkInit() | | 44% | | 50% | 1 | 2 | 0 | 2 | 0 | 1 |
| createYielderClass(Ruby) | | 100% | n/a | 0 | 1 | 0 | 6 | 0 | 1 | |
| newYielder(ThreadContext, Block) | | 100% | n/a | 0 | 1 | 0 | 4 | 0 | 1 | |
| initialize(ThreadContext, Block) | | 100% | | 100% | 0 | 2 | 0 | 4 | 0 | 1 |
| yield(ThreadContext, IRubyObject[]) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| op_lshift(ThreadContext, IRubyObject[]) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| RubyYielder(Ruby, RubyClass) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| static {...} | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |