renanaragao / BuilderImmutableObject

Facilitates work with immutable objects, allows changing storage restrictions and prevents importing source objects.

BuilderImmutableObject

Facilitates work with immutable objects, allows changing storage restrictions and prevents importing source objects

How to install with Nuget ?

Install-Package BuilderImmutableObject

What is this repository for?

Library to work with C# immutable objects.

How do I use it?

public class Car
    {
        [Obsolete]
        public Car()
        {

        }

        public Car(string color, int size)
        {
            Color = color;
            Size = size;
        }

        public string Color { get; private set; }
        public int Size { get; private set; }
    }

public class BuilderTest
   {
       private Car _car;

       [SetUp]
       public void SetUp()
       {
           _car = new Car(color: "red", size: 78);
       }

       [Test]
       public void Must_Change_Color_Property()
       {
           var newCar = _car.Set(x => x.Color, "black").Build();

           Assert.AreNotSame(_car, newCar);

           Assert.AreEqual(78, _car.Size);
           Assert.AreEqual("red", _car.Color);

           Assert.AreEqual(78, newCar.Size);
           Assert.AreEqual("black", newCar.Color);
       }

       [Test]
       public void Must_Change_All_Properties()
       {
           var newCar = _car
               .Set(x => x.Color, "black")
               .Set(x => x.Size, 678)
               .Build();

           Assert.AreNotSame(_car, newCar);

           Assert.AreEqual(78, _car.Size);
           Assert.AreEqual("red", _car.Color);

           Assert.AreEqual(678, newCar.Size);
           Assert.AreEqual("black", newCar.Color);
       }
   }