| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 68 of 68 | 0% | 12 of 12 | 0% | 12 | 12 | 19 | 19 | 6 | 6 |
| equals(Object) | | 0% | | 0% | 6 | 6 | 8 | 8 | 1 | 1 |
| hashCode() | | 0% | | 0% | 2 | 2 | 3 | 3 | 1 | 1 |
| valueOf(String) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| InvoiceReference(String) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| InvoiceReference() | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| getReference() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |