CounterDroneBackend/test/unit/CounterDrone.Core.Tests/AlgorithmFactoryTests.cs

using CounterDrone.Core.Algorithms;
using Xunit;

namespace CounterDrone.Core.Tests
{
    public class AlgorithmFactoryTests
    {
        [Fact]
        public void Create_ReturnsDefaultImplementations()
        {
            var dispersion = AlgorithmFactory.Create<ICloudDispersionModel>();
            Assert.IsType<GaussianPuffDispersion>(dispersion);

            var damage = AlgorithmFactory.Create<IDamageModel>();
            Assert.IsType<DamageModelRouter>(damage);

            var planner = AlgorithmFactory.Create<IDefensePlanner>();
            Assert.IsType<DefaultDefensePlanner>(planner);
        }

        [Fact]
        public void Register_ReplacesImplementation()
        {
            AlgorithmFactory.Register<ICloudDispersionModel>(() => new MockDispersion());
            var instance = AlgorithmFactory.Create<ICloudDispersionModel>();
            Assert.IsType<MockDispersion>(instance);
            AlgorithmFactory.Register<ICloudDispersionModel>(() => new GaussianPuffDispersion());
        }
    }

    public class MockDispersion : ICloudDispersionModel
    {
        public Vector3 Center => new();
        public float Radius => 100f;
        public float CoreDensity => 1f;
        public float EffectiveRadius => 100f;
        public ParticleParams Particles => new();
        public bool IsDissipated => false;
        public int Phase => 2;
        public float Elapsed => 10f;

        public void Initialize(CounterDrone.Core.Models.AmmunitionSpec ammo,
            CounterDrone.Core.Models.CombatScene env, Vector3 releasePos, float releaseTime)
        { }
        public void Tick(float deltaTime, float windSpeed,
            CounterDrone.Core.Models.WindDirection windDir)
        { }
    }
}