kingchenc
78c31d1bed
The repository had no fuzzing setup despite several natural targets — the CSV parser, the Binance envelope deserializer, and the stateful indicator/aggregator update paths. Add a fuzz/ cargo-fuzz crate (detached from the workspace via its own [workspace] table and the parent's exclude) with four targets: - csv_reader — CandleReader over arbitrary bytes - binance_envelope — RawWsEnvelope deserialization from arbitrary strings - indicator_update — RSI/EMA streaming + batch over arbitrary f64 series - tick_aggregator — TickAggregator over arbitrary tick triples Each target asserts the no-panic contract: malformed input must surface as an Err. fuzz/README.md documents running them (nightly + cargo-fuzz).
26 lines
851 B
Rust
26 lines
851 B
Rust
#![no_main]
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//! Fuzz the tick-to-candle aggregator with arbitrary `(price, volume,
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//! timestamp)` triples.
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//!
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//! The aggregator must never panic — out-of-order ticks and volume overflow
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//! have to surface as an `Err`, and `Timeframe::floor` must not overflow for
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//! any `i64` timestamp.
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use libfuzzer_sys::fuzz_target;
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use wickra_core::Tick;
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use wickra_data::aggregator::{TickAggregator, Timeframe};
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fuzz_target!(|data: Vec<(f64, f64, i64)>| {
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let mut agg = TickAggregator::new(Timeframe::new(60).unwrap()).with_gap_fill(true);
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for (price, volume, ts) in data {
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let Ok(tick) = Tick::new(price, volume, ts) else {
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continue;
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};
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if agg.push(tick).is_err() {
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// An out-of-order tick is a defined error; stop feeding this run.
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break;
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}
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}
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let _ = agg.flush();
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});
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