| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 33 of 52 | 36% | 1 of 2 | 50% | 5 | 7 | 4 | 10 | 4 | 6 |
| header() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| error() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| streamId() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| bodyLength() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| isSuccess() | | 87% | | 50% | 1 | 2 | 0 | 1 | 0 | 1 |
| Envelope.Decoder.HeaderExtractionResult(Envelope.Decoder.HeaderExtractionResult.Outcome, int, long) | | 100% | n/a | 0 | 1 | 0 | 5 | 0 | 1 |