| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 1 of 50 | 98% | 2 of 20 | 90% | 2 | 15 | 0 | 5 | 0 | 5 |
| isAsciiDigit(int) | | 88% | | 50% | 2 | 3 | 0 | 1 | 0 | 1 |
| isAsciiAlpha(char) | | 100% | | 100% | 0 | 5 | 0 | 1 | 0 | 1 |
| isAsciiAlphaNum(char) | | 100% | | 100% | 0 | 3 | 0 | 1 | 0 | 1 |
| isAsciiDigit(char) | | 100% | | 100% | 0 | 3 | 0 | 1 | 0 | 1 |
| AbstractCheckDigit() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |