| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 8 of 78 | 89% | 7 of 14 | 50% | 7 | 15 | 4 | 24 | 0 | 8 |
| join(int[], String) | | 90% | | 50% | 2 | 3 | 1 | 7 | 0 | 1 |
| join(Object[], String) | | 89% | | 50% | 2 | 3 | 1 | 6 | 0 | 1 |
| join(Collection, String) | | 89% | | 50% | 2 | 3 | 1 | 6 | 0 | 1 |
| defaultString(String) | | 66% | | 50% | 1 | 2 | 1 | 3 | 0 | 1 |
| colToAlpha(int) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| CustomFunctions() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| lambda$join$1(Object) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| lambda$join$0(Object) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |