Add test for partial decompression #394

Job	Run time
Rustfmt & Docs	14s
Minimum Rust compiler (windows-2022)	2m 56s
Test (stable)	1m 50s
Minimum Rust compiler (macos-latest)	1m 39s
WebAssembly (wasm32-unknown-unknown)	11s
Minimum Rust compiler (ubuntu-latest)	1m 23s
Test (beta)	1m 38s
WebAssembly (wasm32-wasi)	6s
Test (nightly)	1m 24s
Test (macos)	1m 28s
Minimum Rust compiler	59s
Test (windows)	6m 0s
Test (mingw)	2m 7s
	21m 55s

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