| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 71 of 71 | 0% | 12 of 12 | 0% | 10 | 10 | 19 | 19 | 4 | 4 |
| calculate(String) | | 0% | | 0% | 4 | 4 | 7 | 7 | 1 | 1 |
| isValid(String) | | 0% | | 0% | 4 | 4 | 7 | 7 | 1 | 1 |
| static {...} | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| ISBNCheckDigit() | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 |