| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Methods |
| Total | 30 of 30 | 0% | 4 of 4 | 0% | 4 | 4 | 2 | 2 |
| call(ThreadContext, IRubyObject, RubyModule, String, IRubyObject[], Block) | | 0% | | 0% | 3 | 3 | 1 | 1 |
| RubyIO.INVOKER.s.0.2.sysopen19(RubyModule, Visibility) | | 0% | n/a | 1 | 1 | 1 | 1 |