using System.Collections.Generic;
using Xunit;

public class HighScoresTests
{
    [Fact]
    public void List_of_scores()
    {
        var sut = new HighScores(new List<int> { 30, 50, 20, 70 });
        Assert.Equal(new List<int> { 30, 50, 20, 70 }, sut.Scores());
    }

    [Fact]
    public void Latest_score()
    {
        var sut = new HighScores(new List<int> { 100, 0, 90, 30 });
        Assert.Equal(30, sut.Latest());
    }

    [Fact]
    public void Personal_best()
    {
        var sut = new HighScores(new List<int> { 40, 100, 70 });
        Assert.Equal(100, sut.PersonalBest());
    }

    [Fact]
    public void Personal_top_three_from_a_list_of_scores()
    {
        var sut = new HighScores(new List<int> { 10, 30, 90, 30, 100, 20, 10, 0, 30, 40, 40, 70, 70 });
        Assert.Equal(new List<int> { 100, 90, 70 }, sut.PersonalTopThree());
    }

    [Fact]
    public void Personal_top_highest_to_lowest()
    {
        var sut = new HighScores(new List<int> { 20, 10, 30 });
        Assert.Equal(new List<int> { 30, 20, 10 }, sut.PersonalTopThree());
    }

    [Fact]
    public void Personal_top_when_there_is_a_tie()
    {
        var sut = new HighScores(new List<int> { 40, 20, 40, 30 });
        Assert.Equal(new List<int> { 40, 40, 30 }, sut.PersonalTopThree());
    }

    [Fact]
    public void Personal_top_when_there_are_less_than_3()
    {
        var sut = new HighScores(new List<int> { 30, 70 });
        Assert.Equal(new List<int> { 70, 30 }, sut.PersonalTopThree());
    }

    [Fact]
    public void Personal_top_when_there_is_only_one()
    {
        var sut = new HighScores(new List<int> { 40 });
        Assert.Equal(new List<int> { 40 }, sut.PersonalTopThree());
    }

    [Fact]
    public void Latest_score_should_not_change_after_calling_personal_best()
    {
        var sut = new HighScores(new List<int> { 20, 10, 30, 3, 2, 1 });
        Assert.Equal(30, sut.PersonalBest());
        Assert.Equal(1, sut.Latest());
    }

    [Fact]
    public void Latest_score_should_not_change_after_calling_personal_top_three()
    {
        var sut = new HighScores(new List<int> { 20, 100, 30, 90, 2, 70 });
        Assert.Equal(new List<int> { 100, 90, 70 }, sut.PersonalTopThree());
        Assert.Equal(70, sut.Latest());
    }
}