| checkWindowBits(Ruby, int, boolean) |   | 62% | | 50% | 5 | 7 | 3 | 10 | 0 | 1 |
| stream_end_p() | | 0% | | 0% | 2 | 2 | 1 | 1 | 1 | 1 |
| checkStrategy(Ruby, int) | | 50% | | 50% | 1 | 2 | 1 | 4 | 0 | 1 |
| initialize(Block) | | 0% | | n/a | 1 | 1 | 1 | 1 | 1 | 1 |
| finished_p(ThreadContext) | | 100% | | 100% | 0 | 2 | 0 | 3 | 0 | 1 |
| checkLevel(Ruby, int) | | 100% | | 100% | 0 | 4 | 0 | 3 | 0 | 1 |
| closed_p() | | 100% | | 100% | 0 | 2 | 0 | 1 | 0 | 1 |
| close() | | 100% | | n/a | 0 | 1 | 0 | 4 | 0 | 1 |
| data_type() | | 100% | | n/a | 0 | 1 | 0 | 2 | 0 | 1 |
| checkClosed() | | 100% | | 100% | 0 | 2 | 0 | 2 | 0 | 1 |
| ZStream(Ruby, RubyClass) | | 100% | | n/a | 0 | 1 | 0 | 3 | 0 | 1 |
| total_out() | | 100% | | n/a | 0 | 1 | 0 | 2 | 0 | 1 |
| reset() | | 100% | | n/a | 0 | 1 | 0 | 3 | 0 | 1 |
| adler() | | 100% | | n/a | 0 | 1 | 0 | 2 | 0 | 1 |
| finish(ThreadContext, Block) | | 100% | | n/a | 0 | 1 | 0 | 3 | 0 | 1 |
| total_in() | | 100% | | n/a | 0 | 1 | 0 | 2 | 0 | 1 |
| flush_next_out(ThreadContext, Block) | | 100% | | n/a | 0 | 1 | 0 | 1 | 0 | 1 |
| avail_out() | | 100% | | n/a | 0 | 1 | 0 | 1 | 0 | 1 |
| set_avail_out(IRubyObject) | | 100% | | n/a | 0 | 1 | 0 | 2 | 0 | 1 |
| avail_in() | | 100% | | n/a | 0 | 1 | 0 | 1 | 0 | 1 |
| flush_next_in(ThreadContext) | | 100% | | n/a | 0 | 1 | 0 | 1 | 0 | 1 |