| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 24 of 193 | 88% | 3 of 8 | 62% | 3 | 10 | 5 | 37 | 0 | 6 |
| returnBook(Book) | | 76% | | 50% | 1 | 2 | 1 | 7 | 0 | 1 |
| borrowBook(String, String) | | 81% | | 50% | 2 | 3 | 4 | 11 | 0 | 1 |
| createBook(String, String, int) | | 100% | | 100% | 0 | 2 | 0 | 11 | 0 | 1 |
| createInitialData() | | 100% | n/a | 0 | 1 | 0 | 4 | 0 | 1 | |
| constructKey(String, String) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| LibraryMixin() | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 |