Tests/MathCore.Tests/SpecialFunctions.GammaTests.cs - dev - shmachilin/MathCore

Tests/MathCore.Tests/SpecialFunctions.GammaTests.cs

57 строк2 KB

Infarh

Тестовые алгоритмы

11 окт 2023, 10:14

11 окт 2023, 10:14bdf3dbb

namespace MathCore.Tests;

[TestClass]
public class SpecialFunctionsGammaTests
{
    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

    [TestMethod]
    public void GammaTest()
    {
        Func<double, double> Г = MathCore.SpecialFunctions.Gamma.G;

        Assert.AreEqual(1, Г(1), "Г(1) не равно 0!=1");
        Assert.AreEqual(1.Factorial(), Г(2), "Г(2) не равно 1!=1");
        Assert.AreEqual(2.Factorial(), Г(3), "Г(3) не равно 2!=2");
        Assert.AreEqual(3.Factorial(), Г(4), "Г(4) не равно 3!=6");

        Assert.AreEqual(Math.Sqrt(Math.PI), Г(0.5), "Г(0.5) не равно Sqrt(pi)");
        Assert.AreEqual(Math.Sqrt(Math.PI) / 2, Г(1.5), "Г(1.5) не равно Sqrt(pi)/2");
        Assert.AreEqual(-2 * Math.Sqrt(Math.PI), Г(-0.5), "Г(-0.5) не равно -2*Sqrt(pi)");
        Assert.AreEqual(Г(5 + 1) / 5, Г(5), "Г(5) не равно Г(5+1)/5");
        Assert.AreEqual(Г(5 + 1) / 5, Г(5), "Г(5) не равно Г(5+1)/5");

        var g35 = Г(35); // 2.9523279903960414084761860964352 × 10^38
        g35.AssertEquals(2.9523279903960414084761860964352E38, 3.78e+22);
    }
}