capability-grower-configuration-comparison 0.1.0

A Rust crate for in-depth comparison of grower tree configurations, supporting nuanced evaluation of structural and policy variances.
Documentation 
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// ---------------- [ File: capability-grower-configuration-comparison/src/compare_density.rs ]
crate::ix!();

pub trait CompareDensity {
    fn compare_density(&self, other: &GrowerTreeConfiguration) -> CompareOutcome;
}

impl CompareDensity for GrowerTreeConfiguration {
    fn compare_density(&self, other: &GrowerTreeConfiguration) -> CompareOutcome {
        let d1 = *self.density();
        let d2 = *other.density();
        if d1 == d2 {
            CompareOutcome::Exact
        } else {
            let diff = (d1 as i32 - d2 as i32).abs();
            if diff > 10 {
                CompareOutcome::Incompatible
            } else {
                let penalty = 0.05 * diff as f32;
                let score = (1.0 - penalty).max(0.0);
                CompareOutcome::Partial(score)
            }
        }
    }
}

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

    #[traced_test]
    fn same_exact() {
        let a = GrowerTreeConfiguration::base_config(5, 3, 2);
        let b = GrowerTreeConfiguration::base_config(5, 1, 2);
        assert_eq!(a.compare_density(&b), CompareOutcome::Exact);
    }

    #[traced_test]
    fn difference_small_partial() {
        let a = GrowerTreeConfiguration::base_config(5, 3, 2);
        let mut b = a.clone();
        b = b.to_builder().density(3).build().unwrap(); // from 2 =>3
        let out = a.compare_density(&b);
        match out {
            CompareOutcome::Partial(_) => {},
            other => panic!("expected partial, got {:?}", other),
        }
    }

    #[traced_test]
    fn difference_large_incompatible() {
        let a = GrowerTreeConfiguration::base_config(5, 3, 2);
        let mut b = a.clone();
        b = b.to_builder().density(15).build().unwrap();
        assert_eq!(a.compare_density(&b), CompareOutcome::Incompatible);
    }
}