Rust

The native crate. Fold a StrategySpec over a slice of Candles with run to get a BacktestReport. The same kernels drive the live path.

cargo add wickra-backtest

use wickra_backtest::{run, StrategySpec, Candle};

const SPEC: &str = r#"{
    "symbol": "BTCUSDT", "timeframe": "1h",
    "indicators": { "fast": {"type": "Ema", "params": [12]},
                    "slow": {"type": "Ema", "params": [26]} },
    "entry": { "cross_above": ["fast", "slow"] },
    "exit":  { "cross_below": ["fast", "slow"] },
    "sizing": { "type": "fixed_fraction", "fraction": 0.95 }
}"#;

let spec: StrategySpec = serde_json::from_str(SPEC).expect("valid spec");
let report = run(&spec, &candles).expect("run");
println!("{:?}", report.metrics);

For live use, StreamingBacktest::new(&spec, capital) then step(candle) per bar — the same engine, one event at a time.

More

• crates.io/crates/wickra-backtest · docs.rs
• Source & examples
• Strategy spec