using System;

using Moq;

public class Program

{

    public static void Main()

    {

        var mockTestClass = new Mock<ITestClass>();

        var result = mockTestClass.Object;

        Console.WriteLine(result.Prop1);

        mockTestClass.SetupGet(x=> x.Prop1).Returns("Value1");

        Console.WriteLine(result.Prop1);

    }

    public interface ITestClass

    {

       string Prop1 { get; set; }

       string Prop2 { get; set; }

    }

}