| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 417 of 1,146 | 64% | 69 of 122 | 43% | 55 | 70 | 77 | 243 | 3 | 9 |
| parseOpt(String) | | 39% | | 38% | 39 | 46 | 56 | 98 | 0 | 1 |
| nkf(ThreadContext, IRubyObject, IRubyObject, IRubyObject) | | 52% | | 56% | 8 | 10 | 8 | 25 | 0 | 1 |
| guess(ThreadContext, IRubyObject, IRubyObject) | | 59% | | 58% | 5 | 7 | 9 | 26 | 0 | 1 |
| guess1(ThreadContext, IRubyObject, IRubyObject) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| guess2(ThreadContext, IRubyObject, IRubyObject) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| RubyNKF() | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | ||
| parseOption(String) | | 100% | n/a | 0 | 1 | 0 | 57 | 0 | 1 | |
| createNKF(Ruby) | | 100% | | 100% | 0 | 2 | 0 | 13 | 0 | 1 |
| static {...} | | 100% | n/a | 0 | 1 | 0 | 20 | 0 | 1 |