swaitsandClaude Opus 4.6
f805386bb8
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Simplify encoder exit branch (−41 B code size), add GitHub Actions CI with MSRV matrix, cargo-deny with permissive-only license policy, encode-only fuzz target, and feature coverage across test gates. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
34 lines
1.1 KiB
Rust
34 lines
1.1 KiB
Rust
//! Fuzz target: encode arbitrary input into buffers of varying sizes.
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//! Exercises encode error paths (buffer too small) and validates output properties.
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#![no_main]
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use libfuzzer_sys::fuzz_target;
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fuzz_target!(|data: &[u8]| {
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if data.len() > 1024 {
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return;
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}
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let max = ucobs::max_encoded_len(data.len());
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// Encode into a correctly-sized buffer — must always succeed.
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let mut buf = vec![0u8; max];
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let n = ucobs::encode(data, &mut buf)
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.expect("encode failed with max_encoded_len buffer");
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let encoded = &buf[..n];
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// Output must never contain 0x00.
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assert!(!encoded.contains(&0x00), "encoded output contains 0x00");
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// Output length must be bounded by max_encoded_len.
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assert!(n <= max, "encoded length exceeds max_encoded_len");
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// Output must be at least 1 byte (even empty input encodes to [0x01]).
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assert!(n >= 1, "encoded length is zero");
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// Encode into every possible undersized buffer — must return None, never panic.
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for size in 0..n {
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let mut small = vec![0u8; size];
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assert_eq!(ucobs::encode(data, &mut small), None);
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}
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});
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