| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 39 of 77 | 49% | 0 of 0 | n/a | 6 | 11 | 12 | 23 | 6 | 11 |
| get(long, TimeUnit) | | 0% | n/a | 1 | 1 | 5 | 5 | 1 | 1 | |
| get() | | 60% | n/a | 0 | 1 | 2 | 5 | 0 | 1 | |
| performAppends(int, TimeUnit) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| isDone() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| hasPending() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| cancel(boolean) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| isCancelled() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| StringBuilderFutureAppendable(int) | | 100% | n/a | 0 | 1 | 0 | 4 | 0 | 1 | |
| enqueueAppend(Future) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| StringBuilderFutureAppendable() | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| performAppends() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |