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heuropt/tests/properties.proptest-regressions
T
swaits dcf63316f6 test(proptest): add property-based tests for invariants
Adds proptest as a dev-dependency and a `tests/properties.rs`
integration suite that probes invariants on randomly generated
inputs:

Pareto invariants:
- `pareto_compare` is anti-symmetric: A→B is opposite of B→A for
  Dominates / DominatedBy
- `pareto_compare` is reflexive on equal candidates (returns Equal)
- `pareto_front` output is internally non-dominated
- `non_dominated_sort` puts every member into exactly one front
- `crowding_distance` returns Vec same length as front; boundary
  points are infinity for fronts of size ≥ 2 in any axis-sortable
  configuration

Operator invariants:
- `SimulatedBinaryCrossover` returns 2 children of the right length,
  all in bounds
- `PolynomialMutation` returns 1 child of the right length, in bounds
- `BoundedGaussianMutation` returns 1 child in bounds
- `ClampToBounds` repair always lands in bounds
- `ProjectToSimplex` repair always sums to total and is non-negative

Algorithm invariants:
- For any seed, `Optimizer::run` is deterministic across two calls
- Final population has the documented size for population-based
  algorithms

These are the invariants the existing 226 fixed-input unit tests
collectively check; proptest gives us coverage on inputs they don't
cover individually.
2026-05-05 10:38:53 -06:00

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# Seeds for failure cases proptest has generated in the past. It is
# automatically read and these particular cases re-run before any
# novel cases are generated.
#
# It is recommended to check this file in to source control so that
# everyone who runs the test benefits from these saved cases.
cc acfcf5a06625012c4adedfcd5213ab619837031ad52382c69d7a1ee409cc934b # shrinks to bounds = [(0.0, 0.001), (0.0, 0.001), (0.0, 0.001)], eta = 1.0, per_var_p = 0.0, seed = 0