| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 21 of 188 | 88% | 6 of 46 | 86% | 6 | 30 | 3 | 51 | 0 | 7 |
| join(Object, String) | | 72% | | 87% | 1 | 5 | 1 | 10 | 0 | 1 |
| empty(Object) | | 91% | | 92% | 1 | 8 | 1 | 11 | 0 | 1 |
| size(Object) | | 89% | | 90% | 1 | 6 | 1 | 11 | 0 | 1 |
| join(int[], String) | | 100% | | 75% | 1 | 3 | 0 | 6 | 0 | 1 |
| join(Object[], String) | | 100% | | 75% | 1 | 3 | 0 | 5 | 0 | 1 |
| join(Collection, String) | | 100% | | 75% | 1 | 3 | 0 | 5 | 0 | 1 |
| defaultString(CharSequence) | | 100% | | 100% | 0 | 2 | 0 | 3 | 0 | 1 |