using System;

using NUnit.Framework;

using Moq;

​

[TestFixture]

public class TestSalaryProcessor

{

    [Test]

    public void testSalaryAndTaxInfo()

    {

        //Arrange

        var DBMock = new Mock<IDB>();   

        EmployeeSalaryInfo empSalaryInfo = new EmployeeSalaryInfo("Z001","October", 2022 , 8100);

        var SalaryInfoMock = new Mock<ISalaryInfo>();

        SalaryInfoMock.Setup( x => x.GetSalaryInfo("Z001")).Returns(new SalaryInfo(300, 50, 100));

        var WorkingDaysMock = new Mock<ITimeSheetInfo>();

        WorkingDaysMock.Setup(x => x.GetCountOfWorkingDaysInAMonth("Z001")).Returns(20);

        SalaryProcessor salryProc = new SalaryProcessor(DBMock.Object, SalaryInfoMock.Object, WorkingDaysMock.Object);  

        //Act

        salryProc.ProcessSalary("Z001");        

        //Assert

        DBMock.Verify(x => x.Save(empSalaryInfo), Times.Once());

    }       

}

public interface ISalaryInfo

{

    public SalaryInfo GetSalaryInfo(string employeeID);

}

public interface ITimeSheetInfo

{

    public int GetCountOfWorkingDaysInAMonth(string employeeID);

}

​

public class SalaryInfo

{

    private double basic;

    private double hRA;

    private double allowances;

​

    public SalaryInfo()

    {

    }

    public SalaryInfo(double basic, double hRA, double allowances)

        {

            this.Basic = basic;

            this.HRA = hRA;

            this.Allowances = allowances;

        }

    public double Basic {get; set;}

    public double HRA {get; set;}

    public double Allowances {get; set;}

}

​

public class EmployeeSalaryInfo

{

    private string employeeID;

    private string month;

    private int year;

    private double netSalary;

    public EmployeeSalaryInfo(string employeeID, string month, int year, double netSalary)

        {

            this.employeeID = employeeID;

            this.month = month;

            this.year = year;

            this.netSalary = netSalary;

        }

    public EmployeeSalaryInfo()

    {

    }

    public string EmployeeID{get;set;}

    public string Month{get; set;}

    public int Year{get; set;}

    public double NetSalary{get;set;}

     public override bool Equals(object obj)

        {

            EmployeeSalaryInfo empSalaryInfo = obj as EmployeeSalaryInfo;

​

            if (empSalaryInfo != null)

                return this.employeeID.Equals(empSalaryInfo.employeeID) &&

                       this.netSalary.Equals(empSalaryInfo.netSalary);

​

            return false;

        }   

}

​

public class SalaryProcessor

{

    private IDB _dbObject;

    private ISalaryInfo _salaryuObject;

    private ITimeSheetInfo _timesheetObject;

    public SalaryProcessor(IDB dbObject, ISalaryInfo salaryuObject, ITimeSheetInfo timesheetObject)

    {

        _dbObject= dbObject;

        _salaryuObject = salaryuObject;

        _timesheetObject= timesheetObject;

    }

    public void ProcessSalary(string EmployeeID)

    {

        //Get Salary info based on Emp ID - Inject

        SalaryInfo salaryInfo = new SalaryInfo();

        salaryInfo = _salaryuObject.GetSalaryInfo(EmployeeID);

        //Get Working days from time sheet component - Inject

        double WorkingDays = _timesheetObject.GetCountOfWorkingDaysInAMonth(EmployeeID);

        //Claculate Gross for the Month - Write Logic

        double GrossSalary = (salaryInfo.Basic + salaryInfo.HRA + salaryInfo.Allowances) *WorkingDays ;

        //Calculate Tax from Tax Component - Write Logic

        double TaxAmount = 0.1 * GrossSalary;

        //Calculate Net Salary - Write Logic

        double NetSalary = GrossSalary - TaxAmount;

        //Save Salary details - Call the DB Object

        EmployeeSalaryInfo empSalaryInfo = new EmployeeSalaryInfo("Z001", "Oct", 2020, NetSalary);

        _dbObject.Save(empSalaryInfo);

    }

}

​

public interface IDB

{

    public void Save(EmployeeSalaryInfo empSalaryInfo);

}

public class Program

{

    public static void Main()

    {

        var x = new NUnitLite.AutoRun().Execute(new string[]{"--test:TestSalaryProcessor", "--noc"});

        Console.WriteLine("");

        Console.WriteLine("----------------------------------------------");

        Console.WriteLine(x==0?"All Test Passed... :¬)": string.Format("{0} tests failed... :¬(", x));

        Console.WriteLine("----------------------------------------------");            

    }

}