test timurs intelligence in csharp

using Microsoft.VisualStudio.TestTools.UnitTesting;

[TestClass]
public class IntelligenceTest
{
    [TestMethod]
    public void TestFibonacci()
    {
        // Test if the Fibonacci sequence is correctly implemented
        Assert.AreEqual(0, Fibonacci(0));
        Assert.AreEqual(1, Fibonacci(1));
        Assert.AreEqual(1, Fibonacci(2));
        Assert.AreEqual(2, Fibonacci(3));
        Assert.AreEqual(3, Fibonacci(4));
        Assert.AreEqual(5, Fibonacci(5));
        Assert.AreEqual(8, Fibonacci(6));
    }

    [TestMethod]
    public void TestPrimeNumber()
    {
        // Test if a number is prime
        Assert.IsFalse(IsPrime(1));
        Assert.IsTrue(IsPrime(2));
        Assert.IsTrue(IsPrime(3));
        Assert.IsFalse(IsPrime(4));
        Assert.IsTrue(IsPrime(5));
        Assert.IsFalse(IsPrime(6));
        Assert.IsTrue(IsPrime(7));
    }

    private int Fibonacci(int n)
    {
        if (n < 2)
            return n;

        return Fibonacci(n - 1) + Fibonacci(n - 2);
    }

    private bool IsPrime(int number)
    {
        if (number < 2)
            return false;

        for (int i = 2; i <= Math.Sqrt(number); i++)
        {
            if (number % i == 0)
            {
                return false;
            }
        }

        return true;
    }
}
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