Goes from 10 properties to 50+, organized into four files:
- tests/properties.rs (existing) — Pareto-utility invariants
- tests/algorithm_properties.rs (new) — every Optimizer impl gets:
* determinism-with-seed property
* no-panic-on-random-valid-input property
* population-size-as-documented property where applicable
- tests/operator_properties.rs (new) — every Variation/Initializer/
Repair impl gets the right size + in-bounds + no-panic properties
- tests/metric_properties.rs (new) — every metric gets monotonicity
/ non-negativity / dim-checking properties
- tests/numerical_stability.rs (new) — single-point populations,
duplicate populations, near-zero bounds, very large bounds,
algorithms-on-flat-fitness — none of which should panic.
Total: 226 unit tests + this much-larger property suite. Strategies
are factored into a small `prop_helpers` module shared across files
so the random-input generators stay consistent.
swaits