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Add new test exposing mysterious bug #8

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Sep 22, 2023
Merged

Add new test exposing mysterious bug #8

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30 changes: 30 additions & 0 deletions tests/test.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,36 @@ fn version() {
.is_match(version));
}

#[test]
fn test_compressing_and_decompressing_small_input() {
// Input to be compressed and decompressed
let input: &[u8] = &[1, 2, 3];

let compressed = {
let mut output = vec![];
io::copy(
&mut &*input,
&mut write::Bz3Encoder::new(&mut output, 100 * KB).unwrap(),
)
.unwrap();

output
};

let decompressed = {
let mut output = vec![];
io::copy(
&mut read::Bz3Decoder::new(compressed.as_slice()).unwrap(),
Comment on lines +70 to +80
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To make sure that this test is coherent, you can apply these diffs:

- &mut write::Bz3Encoder::new(&mut output, 100 * KB).unwrap(),
+ &mut xz2::write::XzEncoder::new(&mut output, 6),

and

- &mut read::Bz3Decoder::new(compressed.as_slice()).unwrap(),
+ &mut xz2::read::XzDecoder::new(compressed.as_slice()),

Then run this:

cargo add --dev xz2
cargo test -- test_compressing_and_decompressing_small_input

And the test will pass, I am assuming xz2 is battle-tested and is behaving correctly right here.

&mut output,
)
.unwrap();

output
};

assert_eq!(input, decompressed);
}

#[test]
fn test_chained_encoders_and_decoders_with_single_block() {
// 100kb gets shrunk down to 22kb-24kb, so it fits in a single 70kb block
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