UnitTestingExample

using System;
using System.Collections.Generic;
using System.Text;

namespace UnitTesting
{
    public class BanckAccount
    {
        public BanckAccount(decimal balance)
        {
            this.Balance = balance;
        }
        private decimal balance;
        public decimal Balance
        {
            get
            {
                return this.balance;
            }
            private set
            {
                if (value < 0)
                {
                    throw new ArgumentException("Balance can not be negative.");
                }
                balance = value;
            }
        }
        public void Deposit(decimal sum)
        {
            if (sum <= 0)
            {
                throw new ArgumentException("Sum must be positive number.");
            }
            Balance += sum;
        }
        public void Withdraw(decimal sum)
        {
            if (sum <= 0)
            {
                throw new ArgumentException("Sum must be positive number.");
            }
            Balance -= sum;
        }
    }
}
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Text;

namespace UnitTesting.Tests
{
    [TestFixture]
    public class BankAccountTest
    {
        [Test]
        public void TestNewBankAccount()
        {
            var bankAccount = new BanckAccount(100m);
            Assert.That(bankAccount.Balance, Is.EqualTo(100m),"Creating of new Bank Account");
        }
    }
}