Tests/MathCore.Tests/Extensions/PSOMinimizerTests.cs - dev - shmachilin/MathCore

Tests/MathCore.Tests/Extensions/PSOMinimizerTests.cs
87 строк2 KB
Infarh
Рефакторинг
18 сен 2022, 15:27
18 сен 2022, 15:278a852d3
using MathCore.Functions.PSO;

namespace MathCore.Tests.Extensions;

[TestClass]
public class PSOMinimizerTests : UnitTest
{
    private const int SamplesCount = 100;

    private readonly Random _RND = new();
    private double RND(double M = 0, double D = 1) => (_RND.NextDouble() - 0.5) * D + M;

    public TestContext TestContext { get; set; }

    #region Additional test attributes
    // 
    //You can use the following additional attributes as you write your tests:
    //
    //Use ClassInitialize to run code before running the first test in the class
    //[ClassInitialize()]
    //public static void MyClassInitialize(TestContext testContext)
    //{
    //}
    //
    //Use ClassCleanup to run code after all tests in a class have run
    //[ClassCleanup()]
    //public static void MyClassCleanup()
    //{
    //}
    //
    //Use TestInitialize to run code before running each test
    //[TestInitialize()]
    //public void MyTestInitialize()
    //{
    //}
    //
    //Use TestCleanup to run code after each test has run
    //[TestCleanup()]
    //public void MyTestCleanup()
    //{
    //}
    //
    #endregion

    private static double Parabola(double x) => x * x;


    [TestMethod, Priority(0)]
    public void FunctionMinimizerTest()
    {
        const double Dx = 10.0;
        for (var i = 0; i < SamplesCount; i++)
        {
            var f  = Parabola;
            var x0 = RND(Dx, Dx);
            var y0 = RND(Dx, Dx);
            f      = f.ArgumentShift(x0);
            f      = f.Add(y0);

            f.Minimize(x0 - Dx / 2, x0 + Dx / 2, 100, out var x, out var y);

            Assert.That.Value(x).IsEqual(x0, 0.5, "x != x0");
            Assert.That.Value(y).IsEqual(y0, 0.5, "y != y0");
        }
    }

    [TestMethod, Priority(0)]
    public void FunctionMaximizerTest()
    {
        const double Dx = 10.0;
        for (var i = 0; i < SamplesCount; i++)
        {
            var f  = Parabola;
            var x0 = RND(Dx, Dx);
            var y0 = RND(Dx, Dx);
            f      = f.Reverse();
            f      = f.ArgumentShift(x0);
            f      = f.Add(y0);

            f.Maximize(x0 - Dx / 2, x0 + Dx / 2, 100, out var x, out var y);

            const double eps = 0.5;
            Assert.That.Value(x).IsEqual(x0, eps, "x != x0");
            Assert.That.Value(y).IsEqual(y0, eps, "y != y0");
        }
    }
}