using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

using Jint;

​

//https://stackoverflow.com/questions/65915909/pass-an-object-to-a-function-in-jint-and-return-a-value

​

    class TestClass

    {

        public static void Test()

        {

            Test1();        

            Test2();

            Test3();

        }

        public static void Test1()

        {

            var car = new 

            {

                Type = "studebaker convertible",

            };

​

            var value = new Jint.Engine()  // Create the Jint engine

                .Execute("function car(obj) { const type = obj.Type; return type;}") // Define a function car() that accesses the Type field of the incoming obj and returns it.

                .Invoke("car", car);  // Invoke the car() function on the car POCO, and return its result.

            Console.WriteLine(value);

            Assert.AreEqual(value.AsString(), car.Type);

        }   

        public static void Test2()

        {

            var car = new 

            {

                Type = "studebaker convertible",

            };

​

            var value = new Jint.Engine()

                .SetValue("obj", car) // Define a "global" variable "obj"

                .Execute("const result = (function car(obj) { const type = obj.Type; return type;})(obj)") // Define the car() function, call it with "obj", and set the value in "result"

                .GetValue("result"); // Get the evaluated value of "result"

            Console.WriteLine(value);

            Assert.AreEqual(value.AsString(), car.Type);

        }

​

        public static void Test3()

        {

            var car = new 

            {

                Type = "studebaker convertible",

            };

​

            var value = new Jint.Engine()  // Create the Jint engine

                .SetValue("obj", car) // Define a "global" variable "obj"

                .Execute("function car(obj) { const type = obj.Type; return type;}; car(obj);") // Define the car() function, and call it with "obj".

                .GetCompletionValue();  // Get the last evaluated statement completion value

            Console.WriteLine(value);

            Assert.AreEqual(value.AsString(), car.Type);

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("{0} version: {1}", typeof(Jint.Engine).Namespace, typeof(Jint.Engine).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​