| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Methods |
| Total | 26 of 26 | 0% | 2 of 2 | 0% | 3 | 3 | 2 | 2 |
| call(ThreadContext, IRubyObject, RubyModule, String, IRubyObject[]) | | 0% | | 0% | 2 | 2 | 1 | 1 |
| StringIO.INVOKER.i.0.1.readline(RubyModule, Visibility) | | 0% | n/a | 1 | 1 | 1 | 1 |