42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
/*!
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Fuzz target for `ferro_ta_core::overlap::macd`.
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Verifies that MACD never panics and that all three output vectors
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(macd, signal, histogram) match the input length.
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*/
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#![no_main]
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use libfuzzer_sys::fuzz_target;
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use ferro_ta_core::overlap;
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fuzz_target!(|data: &[u8]| {
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if data.len() < 4 {
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return;
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}
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// Extract periods from first 3 bytes (1-64 range each)
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let fastperiod = ((data[0] as usize) % 32) + 1;
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let slowperiod = ((data[1] as usize) % 32) + fastperiod + 1; // slow > fast
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let signalperiod = ((data[2] as usize) % 32) + 1;
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let float_bytes = &data[3..];
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let n_floats = float_bytes.len() / 8;
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if n_floats == 0 {
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return;
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}
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let close: Vec<f64> = (0..n_floats)
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.map(|i| {
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let chunk: [u8; 8] = float_bytes[i * 8..(i + 1) * 8].try_into().unwrap();
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f64::from_le_bytes(chunk)
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})
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.collect();
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let (macd, signal, hist) = overlap::macd(&close, fastperiod, slowperiod, signalperiod);
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assert_eq!(macd.len(), close.len(), "MACD line length mismatch");
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assert_eq!(signal.len(), close.len(), "MACD signal length mismatch");
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assert_eq!(hist.len(), close.len(), "MACD histogram length mismatch");
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});
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