// Idiomatic Rust with proper error handling, logging, and tests
use anyhow::{Context, Result};
use tracing::{info, instrument};

#[instrument]
pub fn process_data(input: &str) -> Result<Output> {
    info!("processing data");

    let parsed = parse_input(input)
        .context("failed to parse input")?;

    let result = transform(parsed)
        .context("transformation failed")?;

    info!(output_size = result.len(), "processing complete");
    Ok(result)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_process_data_happy_path() {
        let input = "valid input";
        let result = process_data(input);
        assert!(result.is_ok());
    }

    #[test]
    fn test_process_data_invalid_input() {
        let input = "";
        let result = process_data(input);
        assert!(result.is_err());
    }
}