| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 157 of 157 | 0% | 14 of 14 | 0% | 12 | 12 | 31 | 31 | 5 | 5 |
| decodeMimeString(String) | | 0% | | 0% | 3 | 3 | 11 | 11 | 1 | 1 |
| convert(ByteList) | | 0% | | 0% | 2 | 2 | 6 | 6 | 1 | 1 |
| detectCharset(String) | | 0% | | 0% | 4 | 4 | 7 | 7 | 1 | 1 |
| makeRubyString(ArrayList) | | 0% | | 0% | 2 | 2 | 5 | 5 | 1 | 1 |
| RubyNKF.MimeConverter(ThreadContext, Map) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 |