| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 69 of 69 | 0% | 6 of 6 | 0% | 10 | 10 | 15 | 15 | 7 | 7 |
| createOutputStream(OutputStream) | | 0% | | 0% | 2 | 2 | 3 | 3 | 1 | 1 |
| createInputStream(InputStream) | | 0% | | 0% | 2 | 2 | 3 | 3 | 1 | 1 |
| toString() | | 0% | | 0% | 2 | 2 | 1 | 1 | 1 | 1 |
| GzipTransformer(int, Transformer) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| GzipTransformer() | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| GzipTransformer(Transformer) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| init(Map) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |