Task38Tests.cs

using adventofcode_2021.Task38;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Xunit;

namespace adventofcode_2021.Tests
{
    public class Task38Tests
    {
        [Fact]
        public void Task38_RealExample_Correct()
        {
            Assert.Equal(3621, Solution.Function(ReadFileAsync(Path.Combine("Task38", "Data.txt"))));
        }

        private List<HashSet<Point>> ReadFileAsync(string fileName)
        {
            var result = new List<HashSet<Point>>();
            var currentPoints = new HashSet<Point>();
            foreach (var line in File.ReadLines(fileName))
            {
                if (line.StartsWith("--- scanner"))
                {
                    if (currentPoints.Count > 0)
                    {
                        result.Add(currentPoints);
                        currentPoints = new();
                    }
                }
                else if (!string.IsNullOrEmpty(line))
                {
                    var n = line.Split(',').Select(x => int.Parse(x)).ToList();
                    currentPoints.Add(new Point(n[0], n[1], n[2]));
                }
            }

            result.Add(currentPoints);
            return result;
        }
    }
}