| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 14 of 131 | 89% | 2 of 4 | 50% | 2 | 6 | 2 | 33 | 0 | 4 |
| decode(byte[], int, int) | | 82% | | 50% | 1 | 2 | 1 | 11 | 0 | 1 |
| encode(CharSequence) | | 88% | | 50% | 1 | 2 | 1 | 13 | 0 | 1 |
| RubyEncoding.UTF8Coder() | | 100% | n/a | 0 | 1 | 0 | 8 | 0 | 1 | |
| decode(byte[]) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |