miniz_oxide 0.8.9: miniz_oxide::deflate::compress_to_vec

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

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checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"

[[package]]
name = "miniz_oxide"
version = "0.8.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
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[[package]]
name = "sample-miniz-oxide"
version = "1.0.0"
dependencies = [
 "miniz_oxide",
]

[package]
name = "sample-miniz-oxide"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
miniz_oxide = "=0.8.9"

[[bin]]
name = "contract"
path = "test/contract.rs"

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify miniz_oxide::deflate::compress_to_vec in pkg:cargo/miniz_oxide@0.8.9
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/miniz_oxide@0.8.9
Demonstrate these symbols/APIs:
  - miniz_oxide::deflate::compress_to_vec

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:3d3ecd88b6097b2ac5e2c27c8f9dd426085cbfdbd508387ba8bd55e7d078975e","contract":["compress_to_vec compresses non-empty data at default level (level 6) and round-trips via decompress_to_vec","compress_to_vec at level 0 produces valid DEFLATE blocks without compression that round-trip","compress_to_vec at level 10 (maximum compression) produces valid DEFLATE output that round-trips","compress_to_vec compresses highly repetitive data efficiently","compress_to_vec compresses empty input and decompresses back to empty vec"],"goal":"verify miniz_oxide::deflate::compress_to_vec in pkg:cargo/miniz_oxide@0.8.9","kind":"HOW","packages":["pkg:cargo/miniz_oxide@0.8.9"],"schemaVersion":1,"symbols":["miniz_oxide::deflate::compress_to_vec"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/miniz_oxide@0.8.9"],"schemaVersion":1,"subject":"pkg:cargo/miniz_oxide@0.8.9","symbols":["miniz_oxide::deflate::compress_to_vec"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify miniz_oxide::deflate::compress_to_vec in pkg:cargo/miniz_oxide@0.8.9",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/miniz_oxide@0.8.9"
  ],
  "symbols": [
    "miniz_oxide::deflate::compress_to_vec"
  ]
}

//! Clean-room verification sample for miniz_oxide.

pub use miniz_oxide::*;

use miniz_oxide::deflate::compress_to_vec;
use miniz_oxide::inflate::decompress_to_vec;

fn main() {
    // 1. compress_to_vec compresses non-empty data at default level (level 6) and round-trips via decompress_to_vec
    let original = b"Hello, CodeSampleX! Pinned clean-room contract test for miniz_oxide deflate compression.";
    let compressed = compress_to_vec(original, 6);
    assert!(!compressed.is_empty(), "compressed data should not be empty");
    let decompressed = decompress_to_vec(&compressed).expect("decompression of level 6 should succeed");
    assert_eq!(decompressed.as_slice(), original);

    // 2. compress_to_vec at level 0 produces valid DEFLATE blocks without compression that round-trip
    let compressed_level0 = compress_to_vec(original, 0);
    assert!(!compressed_level0.is_empty(), "compressed data at level 0 should not be empty");
    let decompressed_level0 = decompress_to_vec(&compressed_level0).expect("decompression of level 0 should succeed");
    assert_eq!(decompressed_level0.as_slice(), original);

    // 3. compress_to_vec at level 10 (maximum compression) produces valid DEFLATE output that round-trips
    let compressed_level10 = compress_to_vec(original, 10);
    assert!(!compressed_level10.is_empty(), "compressed data at level 10 should not be empty");
    let decompressed_level10 = decompress_to_vec(&compressed_level10).expect("decompression of level 10 should succeed");
    assert_eq!(decompressed_level10.as_slice(), original);

    // 4. compress_to_vec compresses highly repetitive data efficiently
    let repetitive_data = vec![b'X'; 4096];
    let compressed_rep = compress_to_vec(&repetitive_data, 6);
    assert!(compressed_rep.len() < repetitive_data.len() / 10, "repetitive data should compress to a fraction of original size");
    let decompressed_rep = decompress_to_vec(&compressed_rep).expect("decompression of repetitive data should succeed");
    assert_eq!(decompressed_rep, repetitive_data);

    // 5. compress_to_vec compresses empty input and decompresses back to empty vec
    let empty_input = b"";
    let compressed_empty = compress_to_vec(empty_input, 6);
    let decompressed_empty = decompress_to_vec(&compressed_empty).expect("decompression of empty input should succeed");
    assert!(decompressed_empty.is_empty(), "decompressed vector should be empty");

    println!("All miniz_oxide::deflate::compress_to_vec contract assertions passed successfully.");
}