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3085359d016fdede0aaf9c7496f73e14dc47e3bb
heuropt/tests/algorithm_properties.rs
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swaits 3085359d01 test(async): parity sweep — run_async must match run with same seed 
Phase 0.2 of the mutation-testing campaign. Adds a module gated on
#[cfg(feature = "async")] that, for every algorithm with a run_async,
asserts that the async runner produces the same result as the sync
runner given the same Config + seed + problem.

Before: nothing exercised run_async, so cargo mutants survived
'replace run_async body with OptimizationResult::new()' and every
comparison/arithmetic mutant inside the async loop for every
async-capable algorithm — about 25-30 algorithms * 5-10 mutants each.
After: every such mutant is killed because the parity test detects
any divergence in best.evaluation.objectives or pareto-front
objective tuples.

Coverage:
- Single-objective real (Sphere1D fixture): RandomSearch,
  HillClimber, OnePlusOneEs, SimulatedAnnealing, GA, PSO, DE, CmaEs,
  IpopCmaEs, sNES, TLBO, NelderMead, BayesianOpt, TPE.
- Multi-objective real (SchafferN1 fixture): NSGA-II/III, SPEA2,
  MOEA/D, MOPSO, IBEA, SMS-EMOA, HypE, PESA-II, ε-MOEA, AGE-MOEA,
  GrEA, KnEA, RVEA, PAES.
- Binary (OneMax): UMDA.
- Permutation (TinyTsp fixture): AntColonyTsp.
- Integer (AbsInt fixture): TabuSearch.
- Multi-fidelity (Sphere1DPartial fixture): Hyperband.

Run with: cargo test --features async --test algorithm_properties async_parity
2026-05-13 19:47:33 -06:00

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//! Per-algorithm property tests.
//!
//! For every `Optimizer` impl in heuropt we check the same three properties:
//! 1. **Deterministic-with-seed**: two runs with the same seed produce
//! the same `best.evaluation.objectives`.
//! 2. **No panic on random valid inputs**: random seeds, random tiny
//! problems, random bounds — the algorithm runs to completion.
//! 3. **Population-size invariant** (where the algorithm documents one):
//! the final population has the configured size.
use proptest::prelude::*;
use heuropt::core::evaluation::Evaluation;
use heuropt::core::objective::{Objective, ObjectiveSpace};
use heuropt::core::problem::Problem;
use heuropt::prelude::*;
// -----------------------------------------------------------------------------
// Tiny problems
// -----------------------------------------------------------------------------
struct Sphere1D;
impl Problem for Sphere1D {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::minimize("f")])
}
fn evaluate(&self, x: &Vec<f64>) -> Evaluation {
Evaluation::new(vec![x[0] * x[0]])
}
}
struct SchafferN1;
impl Problem for SchafferN1 {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::minimize("f1"), Objective::minimize("f2")])
}
fn evaluate(&self, x: &Vec<f64>) -> Evaluation {
let v = x[0];
Evaluation::new(vec![v * v, (v - 2.0).powi(2)])
}
}
struct OneMax {
#[allow(dead_code)]
bits: usize,
}
impl Problem for OneMax {
type Decision = Vec<bool>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::maximize("count")])
}
fn evaluate(&self, x: &Vec<bool>) -> Evaluation {
Evaluation::new(vec![x.iter().filter(|b| **b).count() as f64])
}
}
// -----------------------------------------------------------------------------
// Helpers
// -----------------------------------------------------------------------------
fn so_bounds() -> RealBounds {
RealBounds::new(vec![(-3.0, 3.0)])
}
fn so_bounds_2d() -> RealBounds {
RealBounds::new(vec![(-3.0, 3.0); 2])
}
fn mo_bounds() -> Vec<(f64, f64)> {
vec![(-3.0, 3.0)]
}
fn mo_variation() -> CompositeVariation<SimulatedBinaryCrossover, PolynomialMutation> {
let bounds = mo_bounds();
CompositeVariation {
crossover: SimulatedBinaryCrossover::new(bounds.clone(), 15.0, 0.5),
mutation: PolynomialMutation::new(bounds, 20.0, 1.0),
}
}
// -----------------------------------------------------------------------------
// Single-objective continuous
// -----------------------------------------------------------------------------
proptest! {
#[test]
fn random_search_deterministic(seed in any::<u64>()) {
let make = || RandomSearch::new(
RandomSearchConfig { iterations: 20, batch_size: 1, seed },
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn hill_climber_deterministic(seed in any::<u64>()) {
let make = || HillClimber::new(
HillClimberConfig { iterations: 20, seed },
so_bounds(),
GaussianMutation { sigma: 0.1 },
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn one_plus_one_es_deterministic(seed in any::<u64>()) {
let make = || OnePlusOneEs::new(
OnePlusOneEsConfig {
iterations: 50,
initial_sigma: 0.5,
adaptation_period: 10,
step_increase: 1.22,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn simulated_annealing_deterministic(seed in any::<u64>()) {
let make = || SimulatedAnnealing::new(
SimulatedAnnealingConfig {
iterations: 50,
initial_temperature: 1.0,
final_temperature: 1e-3,
seed,
},
so_bounds(),
GaussianMutation { sigma: 0.1 },
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn ga_deterministic(seed in any::<u64>()) {
let bounds = mo_bounds();
let make = || GeneticAlgorithm::new(
GeneticAlgorithmConfig {
population_size: 10,
generations: 5,
tournament_size: 2,
elitism: 1,
seed,
},
RealBounds::new(bounds.clone()),
CompositeVariation {
crossover: SimulatedBinaryCrossover::new(bounds.clone(), 15.0, 0.5),
mutation: PolynomialMutation::new(bounds.clone(), 20.0, 1.0),
},
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn pso_deterministic(seed in any::<u64>()) {
let make = || ParticleSwarm::new(
ParticleSwarmConfig {
swarm_size: 10,
generations: 5,
inertia: 0.7,
cognitive: 1.5,
social: 1.5,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn de_deterministic(seed in any::<u64>()) {
let make = || DifferentialEvolution::new(
DifferentialEvolutionConfig {
population_size: 10,
generations: 5,
differential_weight: 0.5,
crossover_probability: 0.9,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn cmaes_deterministic(seed in any::<u64>()) {
let cfg = CmaEsConfig {
population_size: 8,
generations: 5,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
initial_mean: None,
seed,
};
let mut a = CmaEs::new(cfg.clone(), so_bounds());
let mut b = CmaEs::new(cfg, so_bounds());
let r1 = a.run(&Sphere1D);
let r2 = b.run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn ipop_cmaes_deterministic(seed in any::<u64>()) {
let cfg = IpopCmaEsConfig {
initial_population_size: 8,
total_generations: 30,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
stall_generations: None,
seed,
};
let mut a = IpopCmaEs::new(cfg.clone(), so_bounds());
let mut b = IpopCmaEs::new(cfg, so_bounds());
let r1 = a.run(&Sphere1D);
let r2 = b.run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn snes_deterministic(seed in any::<u64>()) {
let make = || SeparableNes::new(
SeparableNesConfig {
population_size: 8,
generations: 5,
initial_sigma: 0.5,
mean_learning_rate: 1.0,
sigma_learning_rate: None,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn tlbo_deterministic(seed in any::<u64>()) {
let make = || Tlbo::new(
TlboConfig { population_size: 10, generations: 5, seed },
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn nelder_mead_deterministic(_dummy in any::<bool>()) {
// Nelder-Mead is purely deterministic; no seed.
let make = || NelderMead::new(
NelderMeadConfig { iterations: 50, ..NelderMeadConfig::default() },
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn bayesian_opt_deterministic(seed in any::<u64>()) {
let make = || BayesianOpt::new(
BayesianOptConfig {
initial_samples: 5,
iterations: 10,
length_scales: None,
signal_variance: 1.0,
noise_variance: 1e-6,
acquisition_samples: 100,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn tpe_deterministic(seed in any::<u64>()) {
let make = || Tpe::new(
TpeConfig {
initial_samples: 5,
iterations: 10,
good_fraction: 0.25,
candidate_samples: 12,
bandwidth_factor: 1.0,
seed,
},
so_bounds(),
);
let r1 = make().run(&Sphere1D);
let r2 = make().run(&Sphere1D);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
}
// -----------------------------------------------------------------------------
// Multi-objective
// -----------------------------------------------------------------------------
proptest! {
#[test]
fn nsga2_deterministic_and_pop_size(seed in any::<u64>()) {
let make = || Nsga2::new(
Nsga2Config { population_size: 10, generations: 3, seed },
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
prop_assert_eq!(r1.population.len(), 10);
}
#[test]
fn nsga3_deterministic_and_pop_size(seed in any::<u64>()) {
let make = || Nsga3::new(
Nsga3Config {
population_size: 12,
generations: 3,
reference_divisions: 11,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
prop_assert_eq!(r1.population.len(), 12);
}
#[test]
fn spea2_deterministic(seed in any::<u64>()) {
let make = || Spea2::new(
Spea2Config {
population_size: 10,
archive_size: 10,
generations: 3,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn moead_deterministic(seed in any::<u64>()) {
let make = || Moead::new(
MoeadConfig {
generations: 3,
reference_divisions: 9,
neighborhood_size: 4,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.population.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.population.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn mopso_deterministic(seed in any::<u64>()) {
let make = || Mopso::new(
MopsoConfig {
swarm_size: 10,
generations: 3,
archive_size: 10,
inertia: 0.7,
cognitive: 1.5,
social: 1.5,
seed,
},
RealBounds::new(mo_bounds()),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn ibea_deterministic(seed in any::<u64>()) {
let make = || Ibea::new(
IbeaConfig {
population_size: 10,
generations: 3,
kappa: 0.05,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn sms_emoa_deterministic(seed in any::<u64>()) {
let make = || SmsEmoa::new(
SmsEmoaConfig {
population_size: 8,
generations: 5,
reference_point: vec![10.0, 10.0],
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn hype_deterministic(seed in any::<u64>()) {
let make = || Hype::new(
HypeConfig {
population_size: 10,
generations: 3,
reference_point: vec![10.0, 10.0],
mc_samples: 100,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn pesa2_deterministic(seed in any::<u64>()) {
let make = || PesaII::new(
PesaIIConfig {
population_size: 10,
archive_size: 10,
generations: 3,
grid_divisions: 4,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn epsilon_moea_deterministic(seed in any::<u64>()) {
let make = || EpsilonMoea::new(
EpsilonMoeaConfig {
population_size: 10,
evaluations: 30,
epsilon: vec![0.05, 0.05],
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn age_moea_deterministic(seed in any::<u64>()) {
let make = || AgeMoea::new(
AgeMoeaConfig { population_size: 10, generations: 3, seed },
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn grea_deterministic(seed in any::<u64>()) {
let make = || Grea::new(
GreaConfig {
population_size: 10,
generations: 3,
grid_divisions: 4,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn knea_deterministic(seed in any::<u64>()) {
let make = || Knea::new(
KneaConfig { population_size: 10, generations: 3, seed },
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn rvea_deterministic(seed in any::<u64>()) {
let make = || Rvea::new(
RveaConfig {
population_size: 10,
generations: 3,
reference_divisions: 9,
alpha: 2.0,
seed,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
#[test]
fn paes_deterministic(seed in any::<u64>()) {
let make = || Paes::new(
PaesConfig { iterations: 30, archive_size: 10, seed },
RealBounds::new(mo_bounds()),
GaussianMutation { sigma: 0.1 },
);
let r1 = make().run(&SchafferN1);
let r2 = make().run(&SchafferN1);
let oa: Vec<Vec<f64>> = r1.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
let ob: Vec<Vec<f64>> = r2.pareto_front.iter()
.map(|c| c.evaluation.objectives.clone()).collect();
prop_assert_eq!(oa, ob);
}
}
// -----------------------------------------------------------------------------
// Other decision types
// -----------------------------------------------------------------------------
proptest! {
#[test]
fn umda_deterministic(seed in any::<u64>(), bits in 4usize..16) {
let problem = OneMax { bits };
let make = || Umda::new(UmdaConfig {
population_size: 10,
selected_size: 5,
generations: 3,
bits,
seed,
});
let r1 = make().run(&problem);
let r2 = make().run(&problem);
prop_assert_eq!(
r1.best.unwrap().evaluation.objectives,
r2.best.unwrap().evaluation.objectives,
);
}
#[test]
fn random_search_evaluation_count_invariant(
iterations in 1usize..30,
batch_size in 1usize..5,
seed in any::<u64>(),
) {
let mut opt = RandomSearch::new(
RandomSearchConfig { iterations, batch_size, seed },
so_bounds(),
);
let r = opt.run(&Sphere1D);
prop_assert_eq!(r.evaluations, iterations * batch_size);
prop_assert_eq!(r.population.len(), iterations * batch_size);
prop_assert_eq!(r.generations, iterations);
}
}
// -----------------------------------------------------------------------------
// Cross-cutting: best is at least as good as any front member
// -----------------------------------------------------------------------------
proptest! {
#[test]
fn so_optimizer_best_beats_initial(seed in any::<u64>()) {
// After running an SO optimizer, the result's best.evaluation
// should be at least as good as the worst point sampled — i.e.
// the optimizer doesn't return None or some random non-best.
let mut opt = DifferentialEvolution::new(
DifferentialEvolutionConfig {
population_size: 10,
generations: 5,
differential_weight: 0.5,
crossover_probability: 0.9,
seed,
},
so_bounds_2d(),
);
let r = opt.run(&Sphere1D);
let best_f = r.best.unwrap().evaluation.objectives[0];
let pop_min = r.population.iter()
.map(|c| c.evaluation.objectives[0])
.fold(f64::INFINITY, f64::min);
prop_assert!(
best_f <= pop_min + 1e-12,
"best f = {best_f}, pop min = {pop_min}",
);
}
}
// -----------------------------------------------------------------------------
// AlgorithmInfo sweep — exact name / full_name / seed per algorithm
// -----------------------------------------------------------------------------
//
// Why this exists: every algorithm has three trivial trait methods returning
// `&'static str` and `Option<u64>`. A `cargo mutants` run discovers that
// these are unconstrained — replacing `"NSGA-II"` with `""` or `"xyzzy"`
// survives because no test reads the string. The constants below pin every
// algorithm's identifying strings exactly. Updating an algorithm's name
// requires updating its test, by design.
#[test]
fn age_moea_algorithm_info_is_correct() {
let opt = AgeMoea::new(
AgeMoeaConfig { population_size: 4, generations: 1, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "AGE-MOEA");
assert_eq!(
opt.full_name(),
"Adaptive Geometry Estimation Multi-Objective Evolutionary Algorithm",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn ant_colony_tsp_algorithm_info_is_correct() {
let opt = AntColonyTsp::new(
AntColonyTspConfig {
ants: 2,
generations: 1,
alpha: 1.0,
beta: 2.0,
evaporation: 0.5,
deposit: 1.0,
initial_pheromone: 1.0,
seed: 42,
},
vec![vec![0.0, 1.0], vec![1.0, 0.0]],
);
assert_eq!(opt.name(), "Ant Colony");
assert_eq!(opt.full_name(), "Ant Colony System for TSP");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn bayesian_opt_algorithm_info_is_correct() {
let opt = BayesianOpt::new(
BayesianOptConfig {
initial_samples: 2,
iterations: 1,
length_scales: None,
signal_variance: 1.0,
noise_variance: 1e-3,
acquisition_samples: 4,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "Bayesian Optimization");
assert_eq!(
opt.full_name(),
"Gaussian Process Bayesian Optimization with Expected Improvement",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn cma_es_algorithm_info_is_correct() {
let opt = CmaEs::new(
CmaEsConfig {
population_size: 4,
generations: 1,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
initial_mean: None,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "CMA-ES");
assert_eq!(opt.full_name(), "Covariance Matrix Adaptation Evolution Strategy");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn differential_evolution_algorithm_info_is_correct() {
let opt = DifferentialEvolution::new(
DifferentialEvolutionConfig {
population_size: 4,
generations: 1,
differential_weight: 0.5,
crossover_probability: 0.9,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "DE");
assert_eq!(opt.full_name(), "Differential Evolution");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn epsilon_moea_algorithm_info_is_correct() {
let opt = EpsilonMoea::new(
EpsilonMoeaConfig {
population_size: 4,
evaluations: 4,
epsilon: vec![0.1, 0.1],
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "ε-MOEA");
assert_eq!(
opt.full_name(),
"ε-dominance Multi-Objective Evolutionary Algorithm",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn genetic_algorithm_algorithm_info_is_correct() {
let bounds = mo_bounds();
let opt = GeneticAlgorithm::new(
GeneticAlgorithmConfig {
population_size: 4,
generations: 1,
tournament_size: 2,
elitism: 1,
seed: 42,
},
RealBounds::new(bounds.clone()),
CompositeVariation {
crossover: SimulatedBinaryCrossover::new(bounds.clone(), 15.0, 0.5),
mutation: PolynomialMutation::new(bounds, 20.0, 1.0),
},
);
assert_eq!(opt.name(), "GA");
assert_eq!(opt.full_name(), "Genetic Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn grea_algorithm_info_is_correct() {
let opt = Grea::new(
GreaConfig {
population_size: 4,
generations: 1,
grid_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "GrEA");
assert_eq!(opt.full_name(), "Grid-based Evolutionary Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn hill_climber_algorithm_info_is_correct() {
let opt = HillClimber::new(
HillClimberConfig { iterations: 1, seed: 42 },
so_bounds(),
GaussianMutation { sigma: 0.1 },
);
assert_eq!(opt.name(), "Hill Climber");
assert_eq!(opt.full_name(), "Hill Climbing");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn hyperband_algorithm_info_is_correct() {
let opt: Hyperband<RealBounds, Vec<f64>> = Hyperband::new(
HyperbandConfig {
max_budget: 8.0,
eta: 2.0,
max_brackets: 2,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "Hyperband");
assert_eq!(opt.full_name(), "Hyperband multi-fidelity bandit search");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn hype_algorithm_info_is_correct() {
let opt = Hype::new(
HypeConfig {
population_size: 4,
generations: 1,
reference_point: vec![10.0, 10.0],
mc_samples: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "HypE");
assert_eq!(opt.full_name(), "Hypervolume Estimation Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn ibea_algorithm_info_is_correct() {
let opt = Ibea::new(
IbeaConfig {
population_size: 4,
generations: 1,
kappa: 0.05,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "IBEA");
assert_eq!(opt.full_name(), "Indicator-Based Evolutionary Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn ipop_cma_es_algorithm_info_is_correct() {
let opt = IpopCmaEs::new(
IpopCmaEsConfig {
initial_population_size: 4,
total_generations: 1,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
stall_generations: None,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "IPOP-CMA-ES");
assert_eq!(opt.full_name(), "Increasing-Population CMA-ES with Restarts");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn knea_algorithm_info_is_correct() {
let opt = Knea::new(
KneaConfig { population_size: 4, generations: 1, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "KnEA");
assert_eq!(opt.full_name(), "Knee point-driven Evolutionary Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn moead_algorithm_info_is_correct() {
let opt = Moead::new(
MoeadConfig {
generations: 1,
reference_divisions: 3,
neighborhood_size: 2,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "MOEA/D");
assert_eq!(
opt.full_name(),
"Multi-Objective Evolutionary Algorithm based on Decomposition",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn mopso_algorithm_info_is_correct() {
let opt = Mopso::new(
MopsoConfig {
swarm_size: 4,
generations: 1,
archive_size: 4,
inertia: 0.5,
cognitive: 1.0,
social: 1.0,
seed: 42,
},
RealBounds::new(mo_bounds()),
);
assert_eq!(opt.name(), "MOPSO");
assert_eq!(opt.full_name(), "Multi-Objective Particle Swarm Optimization");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn nelder_mead_algorithm_info_is_correct() {
let opt = NelderMead::new(
NelderMeadConfig { iterations: 1, ..NelderMeadConfig::default() },
so_bounds(),
);
assert_eq!(opt.name(), "Nelder-Mead");
assert_eq!(opt.full_name(), "Nelder-Mead simplex direct search");
// NelderMead is deterministic — no seed. Matches the default AlgorithmInfo
// impl which returns None.
assert_eq!(opt.seed(), None);
}
#[test]
fn nsga2_algorithm_info_is_correct() {
let opt = Nsga2::new(
Nsga2Config { population_size: 4, generations: 1, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "NSGA-II");
assert_eq!(opt.full_name(), "Non-dominated Sorting Genetic Algorithm II");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn nsga3_algorithm_info_is_correct() {
let opt = Nsga3::new(
Nsga3Config {
population_size: 4,
generations: 1,
reference_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "NSGA-III");
assert_eq!(opt.full_name(), "Non-dominated Sorting Genetic Algorithm III");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn one_plus_one_es_algorithm_info_is_correct() {
let opt = OnePlusOneEs::new(
OnePlusOneEsConfig {
iterations: 1,
initial_sigma: 0.5,
adaptation_period: 4,
step_increase: 1.5,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "(1+1)-ES");
assert_eq!(
opt.full_name(),
"(1+1) Evolution Strategy with one-fifth success rule",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn paes_algorithm_info_is_correct() {
let opt = Paes::new(
PaesConfig { iterations: 1, archive_size: 4, seed: 42 },
RealBounds::new(mo_bounds()),
GaussianMutation { sigma: 0.1 },
);
assert_eq!(opt.name(), "PAES");
assert_eq!(opt.full_name(), "Pareto Archived Evolution Strategy");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn particle_swarm_algorithm_info_is_correct() {
let opt = ParticleSwarm::new(
ParticleSwarmConfig {
swarm_size: 4,
generations: 1,
inertia: 0.5,
cognitive: 1.0,
social: 1.0,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "PSO");
assert_eq!(opt.full_name(), "Particle Swarm Optimization");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn pesa_ii_algorithm_info_is_correct() {
let opt = PesaII::new(
PesaIIConfig {
population_size: 4,
archive_size: 4,
generations: 1,
grid_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "PESA-II");
assert_eq!(opt.full_name(), "Pareto Envelope-based Selection Algorithm II");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn random_search_algorithm_info_is_correct() {
let opt = RandomSearch::new(
RandomSearchConfig { iterations: 1, batch_size: 1, seed: 42 },
so_bounds(),
);
assert_eq!(opt.name(), "Random Search");
// No `full_name` override — defaults to `name`.
assert_eq!(opt.full_name(), "Random Search");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn rvea_algorithm_info_is_correct() {
let opt = Rvea::new(
RveaConfig {
population_size: 4,
generations: 1,
reference_divisions: 4,
alpha: 2.0,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "RVEA");
assert_eq!(opt.full_name(), "Reference Vector-guided Evolutionary Algorithm");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn simulated_annealing_algorithm_info_is_correct() {
let opt = SimulatedAnnealing::new(
SimulatedAnnealingConfig {
iterations: 1,
initial_temperature: 1.0,
final_temperature: 0.1,
seed: 42,
},
so_bounds(),
GaussianMutation { sigma: 0.1 },
);
assert_eq!(opt.name(), "Simulated Annealing");
// No `full_name` override — defaults to `name`.
assert_eq!(opt.full_name(), "Simulated Annealing");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn sms_emoa_algorithm_info_is_correct() {
let opt = SmsEmoa::new(
SmsEmoaConfig {
population_size: 4,
generations: 1,
reference_point: vec![100.0, 100.0],
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "SMS-EMOA");
assert_eq!(
opt.full_name(),
"S-Metric Selection Evolutionary Multi-Objective Algorithm",
);
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn separable_nes_algorithm_info_is_correct() {
let opt = SeparableNes::new(
SeparableNesConfig {
population_size: 4,
generations: 1,
initial_sigma: 0.5,
mean_learning_rate: 1.0,
sigma_learning_rate: Some(0.1),
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "sNES");
assert_eq!(opt.full_name(), "Separable Natural Evolution Strategy");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn spea2_algorithm_info_is_correct() {
let opt = Spea2::new(
Spea2Config {
population_size: 4,
archive_size: 4,
generations: 1,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
);
assert_eq!(opt.name(), "SPEA2");
assert_eq!(opt.full_name(), "Strength Pareto Evolutionary Algorithm 2");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn tabu_search_algorithm_info_is_correct() {
struct StartAtZero;
impl Initializer<Vec<i32>> for StartAtZero {
fn initialize(
&mut self,
_size: usize,
_rng: &mut heuropt::core::rng::Rng,
) -> Vec<Vec<i32>> {
vec![vec![0]]
}
}
let neighbors = |x: &Vec<i32>, _rng: &mut heuropt::core::rng::Rng| {
vec![vec![x[0] - 1], vec![x[0] + 1]]
};
let opt = TabuSearch::new(
TabuSearchConfig { iterations: 1, tabu_tenure: 4, seed: 42 },
StartAtZero,
neighbors,
);
assert_eq!(opt.name(), "Tabu Search");
// No `full_name` override — defaults to `name`.
assert_eq!(opt.full_name(), "Tabu Search");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn tlbo_algorithm_info_is_correct() {
let opt = Tlbo::new(
TlboConfig { population_size: 4, generations: 1, seed: 42 },
so_bounds(),
);
assert_eq!(opt.name(), "TLBO");
assert_eq!(opt.full_name(), "Teaching-Learning-Based Optimization");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn tpe_algorithm_info_is_correct() {
let opt = Tpe::new(
TpeConfig {
initial_samples: 2,
iterations: 1,
good_fraction: 0.25,
candidate_samples: 4,
bandwidth_factor: 0.1,
seed: 42,
},
so_bounds(),
);
assert_eq!(opt.name(), "TPE");
assert_eq!(opt.full_name(), "Tree-structured Parzen Estimator");
assert_eq!(opt.seed(), Some(42));
}
#[test]
fn umda_algorithm_info_is_correct() {
let opt = Umda::new(UmdaConfig {
bits: 4,
population_size: 4,
selected_size: 2,
generations: 1,
seed: 42,
});
assert_eq!(opt.name(), "UMDA");
assert_eq!(opt.full_name(), "Univariate Marginal Distribution Algorithm");
assert_eq!(opt.seed(), Some(42));
}
// -----------------------------------------------------------------------------
// run_async ↔ run parity sweep
// -----------------------------------------------------------------------------
//
// Every algorithm exposes both `run` and `run_async` (the latter behind the
// `async` feature). Before this sweep, nothing exercised `run_async`, so a
// `cargo mutants` run survived essentially every mutation to its body —
// "replace run_async with OptimizationResult::new()", every comparison flip,
// every += → -= inside the async loop. This sweep asserts that with the
// same Config + seed + problem, the async runner produces *identical*
// best.evaluation.objectives as the sync runner. The two implementations
// share the algorithmic logic; only the evaluation dispatch differs.
//
// Hyperband uses AsyncPartialProblem (multi-fidelity) instead of
// AsyncProblem, so it gets its own test fixture below.
#[cfg(feature = "async")]
mod async_parity {
use super::*;
use heuropt::core::async_problem::{AsyncPartialProblem, AsyncProblem};
use heuropt::core::partial_problem::PartialProblem;
// ---- Async-capable test fixtures ----------------------------------------
impl AsyncProblem for Sphere1D {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
<Self as Problem>::objectives(self)
}
async fn evaluate_async(&self, x: &Vec<f64>) -> Evaluation {
<Self as Problem>::evaluate(self, x)
}
}
impl AsyncProblem for SchafferN1 {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
<Self as Problem>::objectives(self)
}
async fn evaluate_async(&self, x: &Vec<f64>) -> Evaluation {
<Self as Problem>::evaluate(self, x)
}
}
impl AsyncProblem for OneMax {
type Decision = Vec<bool>;
fn objectives(&self) -> ObjectiveSpace {
<Self as Problem>::objectives(self)
}
async fn evaluate_async(&self, x: &Vec<bool>) -> Evaluation {
<Self as Problem>::evaluate(self, x)
}
}
/// Tiny TSP fixture for AntColonyTsp parity (the algorithm requires
/// a Vec<usize> decision type).
struct TinyTsp {
dist: Vec<Vec<f64>>,
}
impl TinyTsp {
fn new() -> Self {
// 4-city symmetric Euclidean distances; small enough for ACO to
// converge identically across sync/async.
Self {
dist: vec![
vec![0.0, 1.0, 2.0, 3.0],
vec![1.0, 0.0, 4.0, 5.0],
vec![2.0, 4.0, 0.0, 6.0],
vec![3.0, 5.0, 6.0, 0.0],
],
}
}
fn length(&self, tour: &[usize]) -> f64 {
let n = tour.len();
let mut total = 0.0;
for i in 0..n {
total += self.dist[tour[i]][tour[(i + 1) % n]];
}
total
}
}
impl Problem for TinyTsp {
type Decision = Vec<usize>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::minimize("length")])
}
fn evaluate(&self, t: &Vec<usize>) -> Evaluation {
Evaluation::new(vec![self.length(t)])
}
}
impl AsyncProblem for TinyTsp {
type Decision = Vec<usize>;
fn objectives(&self) -> ObjectiveSpace {
<Self as Problem>::objectives(self)
}
async fn evaluate_async(&self, t: &Vec<usize>) -> Evaluation {
<Self as Problem>::evaluate(self, t)
}
}
/// Trivial integer problem for TabuSearch — minimize |x|.
struct AbsInt;
impl Problem for AbsInt {
type Decision = Vec<i32>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::minimize("absx")])
}
fn evaluate(&self, x: &Vec<i32>) -> Evaluation {
Evaluation::new(vec![x[0].unsigned_abs() as f64])
}
}
impl AsyncProblem for AbsInt {
type Decision = Vec<i32>;
fn objectives(&self) -> ObjectiveSpace {
<Self as Problem>::objectives(self)
}
async fn evaluate_async(&self, x: &Vec<i32>) -> Evaluation {
<Self as Problem>::evaluate(self, x)
}
}
/// Multi-fidelity wrapper for Hyperband — ignores the budget (problem
/// is noise-free) and returns Sphere1D's evaluation.
struct Sphere1DPartial;
impl PartialProblem for Sphere1DPartial {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
ObjectiveSpace::new(vec![Objective::minimize("f")])
}
fn evaluate_at_budget(&self, x: &Vec<f64>, _budget: f64) -> Evaluation {
Evaluation::new(vec![x[0] * x[0]])
}
}
impl AsyncPartialProblem for Sphere1DPartial {
type Decision = Vec<f64>;
fn objectives(&self) -> ObjectiveSpace {
<Self as PartialProblem>::objectives(self)
}
async fn evaluate_at_budget_async(
&self,
x: &Vec<f64>,
budget: f64,
) -> Evaluation {
<Self as PartialProblem>::evaluate_at_budget(self, x, budget)
}
}
fn objectives_of<D>(r: &OptimizationResult<D>) -> Vec<f64> {
r.best
.as_ref()
.map(|c| c.evaluation.objectives.clone())
.unwrap_or_default()
}
// ---- Per-algorithm parity tests -----------------------------------------
#[tokio::test]
async fn random_search_async_matches_sync() {
let cfg = RandomSearchConfig { iterations: 8, batch_size: 1, seed: 42 };
let mut a = RandomSearch::new(cfg.clone(), so_bounds());
let mut b = RandomSearch::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn hill_climber_async_matches_sync() {
let cfg = HillClimberConfig { iterations: 8, seed: 42 };
let mut a = HillClimber::new(cfg.clone(), so_bounds(), GaussianMutation { sigma: 0.1 });
let mut b = HillClimber::new(cfg, so_bounds(), GaussianMutation { sigma: 0.1 });
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn one_plus_one_es_async_matches_sync() {
let cfg = OnePlusOneEsConfig {
iterations: 8,
initial_sigma: 0.5,
adaptation_period: 4,
step_increase: 1.5,
seed: 42,
};
let mut a = OnePlusOneEs::new(cfg.clone(), so_bounds());
let mut b = OnePlusOneEs::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn simulated_annealing_async_matches_sync() {
let cfg = SimulatedAnnealingConfig {
iterations: 8,
initial_temperature: 1.0,
final_temperature: 0.1,
seed: 42,
};
let mut a = SimulatedAnnealing::new(
cfg.clone(),
so_bounds(),
GaussianMutation { sigma: 0.1 },
);
let mut b = SimulatedAnnealing::new(cfg, so_bounds(), GaussianMutation { sigma: 0.1 });
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn genetic_algorithm_async_matches_sync() {
let bounds = vec![(-3.0_f64, 3.0)];
let cfg = GeneticAlgorithmConfig {
population_size: 6,
generations: 3,
tournament_size: 2,
elitism: 1,
seed: 42,
};
let make = || {
GeneticAlgorithm::new(
cfg.clone(),
RealBounds::new(bounds.clone()),
CompositeVariation {
crossover: SimulatedBinaryCrossover::new(bounds.clone(), 15.0, 0.5),
mutation: PolynomialMutation::new(bounds.clone(), 20.0, 1.0),
},
)
};
let r_sync = make().run(&Sphere1D);
let r_async = make().run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn particle_swarm_async_matches_sync() {
let cfg = ParticleSwarmConfig {
swarm_size: 6,
generations: 3,
inertia: 0.5,
cognitive: 1.0,
social: 1.0,
seed: 42,
};
let mut a = ParticleSwarm::new(cfg.clone(), so_bounds());
let mut b = ParticleSwarm::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn differential_evolution_async_matches_sync() {
let cfg = DifferentialEvolutionConfig {
population_size: 6,
generations: 3,
differential_weight: 0.5,
crossover_probability: 0.9,
seed: 42,
};
let mut a = DifferentialEvolution::new(cfg.clone(), so_bounds());
let mut b = DifferentialEvolution::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn cma_es_async_matches_sync() {
let cfg = CmaEsConfig {
population_size: 6,
generations: 3,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
initial_mean: None,
seed: 42,
};
let mut a = CmaEs::new(cfg.clone(), so_bounds());
let mut b = CmaEs::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn ipop_cma_es_async_matches_sync() {
let cfg = IpopCmaEsConfig {
initial_population_size: 4,
total_generations: 6,
initial_sigma: 0.5,
eigen_decomposition_period: 1,
stall_generations: None,
seed: 42,
};
let mut a = IpopCmaEs::new(cfg.clone(), so_bounds());
let mut b = IpopCmaEs::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn separable_nes_async_matches_sync() {
let cfg = SeparableNesConfig {
population_size: 6,
generations: 3,
initial_sigma: 0.5,
mean_learning_rate: 1.0,
sigma_learning_rate: Some(0.1),
seed: 42,
};
let mut a = SeparableNes::new(cfg.clone(), so_bounds());
let mut b = SeparableNes::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn tlbo_async_matches_sync() {
let cfg = TlboConfig { population_size: 6, generations: 3, seed: 42 };
let mut a = Tlbo::new(cfg.clone(), so_bounds());
let mut b = Tlbo::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn nelder_mead_async_matches_sync() {
let cfg = NelderMeadConfig { iterations: 8, ..NelderMeadConfig::default() };
let mut a = NelderMead::new(cfg.clone(), so_bounds());
let mut b = NelderMead::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn bayesian_opt_async_matches_sync() {
let cfg = BayesianOptConfig {
initial_samples: 3,
iterations: 2,
length_scales: None,
signal_variance: 1.0,
noise_variance: 1e-3,
acquisition_samples: 8,
seed: 42,
};
let mut a = BayesianOpt::new(cfg.clone(), so_bounds());
let mut b = BayesianOpt::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn tpe_async_matches_sync() {
let cfg = TpeConfig {
initial_samples: 3,
iterations: 2,
good_fraction: 0.25,
candidate_samples: 8,
bandwidth_factor: 0.1,
seed: 42,
};
let mut a = Tpe::new(cfg.clone(), so_bounds());
let mut b = Tpe::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1D);
let r_async = b.run_async(&Sphere1D, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
// --- Multi-objective: best-comparison falls back to pareto front size ----
//
// For multi-objective algorithms, `best` is only meaningful as
// `best_by_some_scalarization`. We compare the sorted Pareto-front
// objective tuples instead.
fn front_objectives<D>(r: &OptimizationResult<D>) -> Vec<Vec<f64>> {
let mut front: Vec<Vec<f64>> = r
.pareto_front
.iter()
.map(|c| c.evaluation.objectives.clone())
.collect();
front.sort_by(|a, b| {
for (x, y) in a.iter().zip(b.iter()) {
match x.partial_cmp(y) {
Some(std::cmp::Ordering::Equal) => continue,
Some(ord) => return ord,
None => return std::cmp::Ordering::Equal,
}
}
std::cmp::Ordering::Equal
});
front
}
#[tokio::test]
async fn nsga2_async_matches_sync() {
let make = || {
Nsga2::new(
Nsga2Config { population_size: 8, generations: 3, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn nsga3_async_matches_sync() {
let make = || {
Nsga3::new(
Nsga3Config {
population_size: 8,
generations: 3,
reference_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn spea2_async_matches_sync() {
let make = || {
Spea2::new(
Spea2Config {
population_size: 8,
archive_size: 4,
generations: 3,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn moead_async_matches_sync() {
let make = || {
Moead::new(
MoeadConfig {
generations: 3,
reference_divisions: 4,
neighborhood_size: 2,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn mopso_async_matches_sync() {
let make = || {
Mopso::new(
MopsoConfig {
swarm_size: 6,
generations: 3,
archive_size: 4,
inertia: 0.5,
cognitive: 1.0,
social: 1.0,
seed: 42,
},
RealBounds::new(mo_bounds()),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn ibea_async_matches_sync() {
let make = || {
Ibea::new(
IbeaConfig {
population_size: 8,
generations: 3,
kappa: 0.05,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn sms_emoa_async_matches_sync() {
let make = || {
SmsEmoa::new(
SmsEmoaConfig {
population_size: 8,
generations: 3,
reference_point: vec![100.0, 100.0],
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn hype_async_matches_sync() {
let make = || {
Hype::new(
HypeConfig {
population_size: 8,
generations: 3,
reference_point: vec![10.0, 10.0],
mc_samples: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn pesa_ii_async_matches_sync() {
let make = || {
PesaII::new(
PesaIIConfig {
population_size: 8,
archive_size: 4,
generations: 3,
grid_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn epsilon_moea_async_matches_sync() {
let make = || {
EpsilonMoea::new(
EpsilonMoeaConfig {
population_size: 8,
evaluations: 12,
epsilon: vec![0.1, 0.1],
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn age_moea_async_matches_sync() {
let make = || {
AgeMoea::new(
AgeMoeaConfig { population_size: 8, generations: 3, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn grea_async_matches_sync() {
let make = || {
Grea::new(
GreaConfig {
population_size: 8,
generations: 3,
grid_divisions: 4,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn knea_async_matches_sync() {
let make = || {
Knea::new(
KneaConfig { population_size: 8, generations: 3, seed: 42 },
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn rvea_async_matches_sync() {
let make = || {
Rvea::new(
RveaConfig {
population_size: 8,
generations: 3,
reference_divisions: 4,
alpha: 2.0,
seed: 42,
},
RealBounds::new(mo_bounds()),
mo_variation(),
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
#[tokio::test]
async fn paes_async_matches_sync() {
let make = || {
Paes::new(
PaesConfig { iterations: 6, archive_size: 4, seed: 42 },
RealBounds::new(mo_bounds()),
GaussianMutation { sigma: 0.1 },
)
};
let r_sync = make().run(&SchafferN1);
let r_async = make().run_async(&SchafferN1, 2).await;
assert_eq!(front_objectives(&r_sync), front_objectives(&r_async));
}
// --- Binary, integer, permutation, multi-fidelity ----------------------
#[tokio::test]
async fn umda_async_matches_sync() {
let cfg = UmdaConfig {
bits: 4,
population_size: 6,
selected_size: 3,
generations: 3,
seed: 42,
};
let mut a = Umda::new(cfg.clone());
let mut b = Umda::new(cfg);
let problem = OneMax { bits: 4 };
let r_sync = a.run(&problem);
let r_async = b.run_async(&problem, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn ant_colony_tsp_async_matches_sync() {
let problem = TinyTsp::new();
let cfg = AntColonyTspConfig {
ants: 4,
generations: 3,
alpha: 1.0,
beta: 2.0,
evaporation: 0.5,
deposit: 1.0,
initial_pheromone: 1.0,
seed: 42,
};
let mut a = AntColonyTsp::new(cfg.clone(), problem.dist.clone());
let mut b = AntColonyTsp::new(cfg, problem.dist.clone());
let r_sync = a.run(&problem);
let r_async = b.run_async(&problem, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn tabu_search_async_matches_sync() {
struct StartAt5;
impl Initializer<Vec<i32>> for StartAt5 {
fn initialize(
&mut self,
_size: usize,
_rng: &mut heuropt::core::rng::Rng,
) -> Vec<Vec<i32>> {
vec![vec![5]]
}
}
let neighbors = |x: &Vec<i32>, _rng: &mut heuropt::core::rng::Rng| {
vec![vec![x[0] - 1], vec![x[0] + 1]]
};
let cfg = TabuSearchConfig { iterations: 8, tabu_tenure: 3, seed: 42 };
let mut a = TabuSearch::new(cfg.clone(), StartAt5, neighbors);
let mut b = TabuSearch::new(cfg, StartAt5, neighbors);
let r_sync = a.run(&AbsInt);
let r_async = b.run_async(&AbsInt, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
#[tokio::test]
async fn hyperband_async_matches_sync() {
let cfg = HyperbandConfig {
max_budget: 9.0,
eta: 3.0,
max_brackets: 2,
seed: 42,
};
let mut a: Hyperband<RealBounds, Vec<f64>> = Hyperband::new(cfg.clone(), so_bounds());
let mut b: Hyperband<RealBounds, Vec<f64>> = Hyperband::new(cfg, so_bounds());
let r_sync = a.run(&Sphere1DPartial);
let r_async = b.run_async(&Sphere1DPartial, 2).await;
assert_eq!(objectives_of(&r_sync), objectives_of(&r_async));
}
}
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