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test(fuzz): cover every indicator, scalar and candle inputs (R9)

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The fuzz suite previously covered only `Rsi(14)` and `Ema(20)` — 2 of
71 indicators, no OHLCV coverage at all. Audit finding R9 asked for
ATR/ADX/Stochastic/PSAR as a minimum; this commit goes further and
brings every indicator under fuzz.

- `indicator_update` (rewritten): drives every scalar-input indicator
  through one streaming pass + one batch call per iteration. Covers
  SMA, EMA, WMA, RSI, DEMA, TEMA, HMA, ROC, TRIX, SMMA, TRIMA, ZLEMA,
  KAMA, T3, MOM, CMO, TSI, PMO, StochRSI, DPO, PPO, Coppock, StdDev,
  UlcerIndex, HistoricalVolatility, LinearRegression, LinRegSlope,
  LinRegAngle, VHF, ZScore, MACD, BollingerBands. A `drive` helper
  marked `#[inline(never)]` keeps each indicator on its own panic
  backtrace frame.

- `indicator_update_candle` (new): chunks the fuzz `f64` stream into
  `[open, high, low, close, volume]` tuples, builds candles via
  `Candle::new` (skipping ones that fail OHLCV validation — that path
  is fuzz-tested separately), then drives every candle-input indicator
  through streaming + batch. Covers ATR, NATR, TrueRange,
  ChaikinVolatility, Keltner, Donchian, PSAR, SuperTrend,
  ChandelierExit, ChandeKrollStop, ATRTrailingStop, ADX, Aroon,
  AroonOscillator, Vortex, MassIndex, ChoppinessIndex, CCI, WilliamsR,
  AwesomeOscillator, AcceleratorOscillator, UltimateOscillator,
  BalanceOfPower, OBV, MFI, VWAP, RollingVWAP, VWMA, ADL, VPT, CMF,
  ChaikinOscillator, ForceIndex, EaseOfMovement, TypicalPrice,
  MedianPrice, WeightedClose, Stochastic.

- `fuzz/Cargo.toml` registers the new target; `fuzz/README.md`
  describes both expanded targets.

- A `fuzz-smoke` CI job runs each of the five targets for 30 s on
  every push and pull-request — enough to catch a regression in the
  harness without slowing CI to a crawl. Long fuzz campaigns belong
  on dedicated infrastructure with persistent corpora.
This commit is contained in:
kingchenc
2026-05-23 10:33:05 +02:00
parent 0995f8d66a
commit b003321562
6 changed files with 277 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fuzz/README.md
+3 -1
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@@ -17,7 +17,8 @@ rustup toolchain install nightly
| --- | --- |
| `csv_reader` | `CandleReader` over arbitrary bytes — headers, cells, BOM, binary noise. |
| `binance_envelope` | `RawWsEnvelope` deserialization from arbitrary strings. |
| `indicator_update` | RSI / EMA streaming + batch over arbitrary `f64` sequences (NaN, ±inf, jumps). |
| `indicator_update` | Every scalar-input indicator (SMA / EMA / WMA / RSI / DEMA / TEMA / HMA / ROC / TRIX / SMMA / TRIMA / ZLEMA / KAMA / T3 / MOM / CMO / TSI / PMO / StochRSI / DPO / PPO / Coppock / StdDev / UlcerIndex / HistoricalVolatility / LinearRegression / LinRegSlope / LinRegAngle / VHF / ZScore / MACD / Bollinger) streamed + batched over arbitrary `f64` sequences (NaN, ±inf, jumps). |
| `indicator_update_candle` | Every candle-input indicator (ATR, NATR, TrueRange, ChaikinVolatility, Keltner, Donchian, PSAR, SuperTrend, ChandelierExit, ChandeKrollStop, ATRTrailingStop, ADX, Aroon, AroonOscillator, Vortex, MassIndex, ChoppinessIndex, CCI, WilliamsR, AwesomeOscillator, AcceleratorOscillator, UltimateOscillator, BalanceOfPower, OBV, MFI, VWAP, RollingVWAP, VWMA, ADL, VPT, CMF, ChaikinOscillator, ForceIndex, EaseOfMovement, TypicalPrice, MedianPrice, WeightedClose, Stochastic) streamed + batched over fuzz-derived OHLCV candles. |
| `tick_aggregator` | `TickAggregator` over arbitrary `(price, volume, timestamp)` triples. |
## Run
@@ -27,6 +28,7 @@ rustup toolchain install nightly
cargo +nightly fuzz run csv_reader
cargo +nightly fuzz run binance_envelope
cargo +nightly fuzz run indicator_update
cargo +nightly fuzz run indicator_update_candle
cargo +nightly fuzz run tick_aggregator
```