//
//  GeneticPopulationReproductionTestDouble.swift
//  SwiftQuantumComputing
//
//  Created by Enrique de la Torre on 03/03/2019.
//  Copyright © 2019 Enrique de la Torre. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import Foundation

@testable import SwiftQuantumComputing

// MARK: - Main body

final class GeneticPopulationReproductionTestDouble {

    // MARK: - Internal properties

    private (set) var appliedCount = 0
    private (set) var lastAppliedPopulation: [Fitness.EvalCircuit]?
    var appliedResult: [Fitness.EvalCircuit] = []
}

// MARK: - GeneticPopulationReproduction methods

extension GeneticPopulationReproductionTestDouble: GeneticPopulationReproduction {
    func applied(to population: [Fitness.EvalCircuit]) -> Result<[Fitness.EvalCircuit], EvolveCircuitError> {
        appliedCount += 1

        lastAppliedPopulation = population

        return .success(appliedResult)
    }
}
