| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 137 of 437 | 68% | 23 of 52 | 55% | 19 | 40 | 40 | 123 | 1 | 14 |
| onError(Throwable) | | 0% | | 0% | 3 | 3 | 14 | 14 | 1 | 1 |
| onWritePossible() | | 69% | | 37% | 4 | 5 | 10 | 24 | 0 | 1 |
| flushInternal(boolean, boolean) | | 55% | | 50% | 2 | 4 | 7 | 15 | 0 | 1 |
| isReady() | | 65% | | 60% | 4 | 6 | 4 | 13 | 0 | 1 |
| setWriteListener(WriteListener) | | 75% | | 60% | 3 | 6 | 2 | 15 | 0 | 1 |
| preWriteChecks() | | 44% | | 66% | 2 | 4 | 2 | 5 | 0 | 1 |
| close() | | 94% | | 75% | 1 | 3 | 1 | 5 | 0 | 1 |
| UpgradeServletOutputStream(UpgradeProcessorBase, SocketWrapperBase, UpgradeInfo) | | 100% | n/a | 0 | 1 | 0 | 11 | 0 | 1 | |
| writeInternal(byte[], int, int) | | 100% | | 100% | 0 | 2 | 0 | 5 | 0 | 1 |
| write(int) | | 100% | n/a | 0 | 1 | 0 | 5 | 0 | 1 | |
| write(byte[], int, int) | | 100% | n/a | 0 | 1 | 0 | 5 | 0 | 1 | |
| flush() | | 100% | | 100% | 0 | 2 | 0 | 3 | 0 | 1 |
| static {...} | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| isClosed() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |