AioNet/AioNet.LinqTest/ExtendedLinqTest.cs

namespace AioNet.LinqTest;

using AioNet.Linq;

public class ExtendedLinqTest
{
    [Fact]
    public void FindOneCombinationFor3Elements_SubsequenceLength3()
    {
        var foundCombinations = new[] { 1, 2, 3 }.Combinations(3);
        Assert.Single(foundCombinations);

        var onlyCombination = foundCombinations.First();
        Assert.Contains(1, onlyCombination);
        Assert.Contains(2, onlyCombination);
        Assert.Contains(3, onlyCombination);
    }
}