using Microsoft.VisualStudio.TestTools.UnitTesting;

using System.Collections.Generic;

using System;

public class DiceRolling

{

    private static Random random = new Random();

​

    /// <summary>

    /// Simulates rolling a six-sided die.

    /// </summary>

    /// <returns>A random integer between 1 and 6 (inclusive).</returns>

    public static int RollDie()

    {

        return random.Next(1, 7);

    }

​

    /// <summary>

    /// Checks if the given rolls contain 6, 5, and 4.

    /// </summary>

    /// <param name="rolls">A list of integers representing the dice rolls.</param>

    /// <returns>True if the rolls contain 6, 5, and 4, otherwise false.</returns>

    public static bool Contains654(List<int> rolls)

    {

        return rolls.Contains(6) && rolls.Contains(5) && rolls.Contains(4);

    }

​

    /// <summary>

    /// Prints the possibility of 6-5-4 within three attempts.

    /// </summary>

    public void RollingDices()

    {

        try

        {

            List<int> rolls = new List<int>();

            for (int i = 1; i <= 3; i++)

            {

                int roll = RollDie();

                rolls.Add(roll);

                Console.WriteLine($"Attempt {i}: {roll}");

            }

​

            if (Contains654(rolls))

            {

                Console.WriteLine("Status: Pass");

            }

            else

            {

                Console.WriteLine("Status: Fail");

            }

        }

        catch (Exception ex)

        {

            Console.WriteLine($"An error occurred: {ex.Message}");

        }

    }

}

[TestClass]

public class DiceRollingTests

{

    [TestMethod]

    public void RollDie_ReturnsValidDieRoll()

    {

        int roll = DiceRolling.RollDie();

        Assert.IsTrue(roll >= 1 && roll <= 6);

    }

​

    [TestMethod]

    public void Contains654_ReturnsTrue_When654Present()

    {

        List<int> rolls = new List<int> { 1, 6, 5, 4, 2, 3 };

        Assert.IsTrue(DiceRolling.Contains654(rolls));

    }

​

    [TestMethod]

    public void Contains654_ReturnsFalse_When6Missing()

    {

        List<int> rolls = new List<int> { 1, 1, 5, 4, 2, 3 };

        Assert.IsFalse(DiceRolling.Contains654(rolls));

    }

​

    [TestMethod]

    public void Contains654_ReturnsFalse_When5Missing()

    {

        List<int> rolls = new List<int> { 1, 6, 1, 4, 2, 3 };

        Assert.IsFalse(DiceRolling.Contains654(rolls));

    }

​

    [TestMethod]

    public void Contains654_ReturnsFalse_When4Missing()

    {

        List<int> rolls = new List<int> { 1, 6, 5, 1, 2, 3 };

        Assert.IsFalse(DiceRolling.Contains654(rolls));

    }

​

    [TestMethod]

    public void Contains654_ReturnsFalse_WhenAllMissing()

    {

        List<int> rolls = new List<int> { 1, 2, 3, 1, 2, 3 };

        Assert.IsFalse(DiceRolling.Contains654(rolls));

    }

}