using System;

using System.Collections.Generic; //do wykorzystania List

using Xunit;

​

//jakby 1 plik

public class Program

{

    public static void Main(string[] args)

    {

        var book = new Book("pierwsza książka");//działanie konstruktora

        book.AddGrade(89.2);

        book.AddGrade(29.2);

        var stats = book.ComputeStatistics();

        Console.WriteLine("min-"+stats.Low+" max-"+stats.High+" avg-"+stats.Average);

​

​

    }

}

​

​

// tu jakby 2 plik

​

public class Book{ 

    public Book(string name)

    {

        grades = new List<double>();

        this.name = name;

    }

    public void AddGrade(double grade)

    {

        grades.Add(grade);

    }

    public Statistics ComputeStatistics()

    {

        var result = new Statistics();

        foreach( var grade in grades ) {

            result.High = Math.Max(grade, result.High);

            result.Low = Math.Min(grade, result.Low);

            result.Average+=grade;

​

        }

        result.Average /=grades.Count;

        return result;

        //Console.WriteLine("min-"+lowGrade+" max-"+highGrade+" avg-"+result);

    } 

    private List<double> grades;

    private string name; 

    private double highGrade = double.MinValue;

    private double lowGrade = double.MaxValue;

    //private double result;

​

}

​

​

//kolejny plik kolejna klasa

​

//tez w przestrzeni nazw 

public class Statistics {

    public double Average;

    public double High;

    public double Low;

}

​

​

​

//testy jednostkowe xUnit

​

//inny projekt

//using Xunit;

​

//też w przestrzeni nazw

​

public class BookTests

{

    //[Fact]

    public void Test1() 

    {

    //  var x=5;

    //  var y=2;

    //  var actual=x*y;

    //  Assert.Equal(7, actual); //test da błąd

            //wartosc oczekiwana, wartosc rzeczywista

        //arange

        var book = new Book("");

        book.AddGrade(89.1);

        book.AddGrade(90.5);

        //act

        book.ComputeStatistics();

        //assert

        Assert.Equal(85.6,result.Avarage); // sprawdzam z wartoscia oczekiwana

        Assert.Equal(90.5,result.High);

    }

}

​