NUnit适用于.Net开发中的单元测试，使用步骤如下
1、下载NUnit-2.2.2并解压或安装。
2、VS.Net中建立 项目，添加对NUnit.Framework.dll的引用,
3、创建新类AccountTest 测试已存在的类Account
4、将代码编译为DLL或exe文件，在nunit-gui主程序中打开编译过的程序，选中要运行的Test Case点Run
另外，配合DCGWin,可将NUnit的测试结果(保存的XML文件)生成html格式的测试报告.
public class Account { private float balance;
public void Deposit(float amount) { balance += amount; }
public void Withdraw(float amount) { balance -= amount; }
public void TransferFunds(Account destination, float amount) { this.balance-=amount; destination.balance+=amount; }
public float Balance { get { return balance; } set { balance=value; } } }
[TestFixture(Description="帐号测试")] public class AccountTest {
[Test(Description="转帐测试")] public void TransferFunds() { Account source = new Account(); source.Deposit(200.00F); Account destination = new Account(); destination.Deposit(150.00F);
source.TransferFunds(destination, 100.00F); Assert.AreEqual(250.00F, destination.Balance);//should be 250 Assert.AreEqual(100.00F, source.Balance); Console.WriteLine("Funds Tranfer Event Tested Successfully"); }

[Test(Description="Account.Balance的Get属性")] public void GetTest() { Account source=new Account(); source.Deposit(100.00F); Assert.AreEqual(100,source.Balance); Console.WriteLine("Balance Attributes Get Tested Successfully"); }
///

/// SetTest ///

[Test(Description="Account.Balance的set属性测试")] public void SetTest() { Account source=new Account(); source.Balance=100; Assert.AreEqual(100,source.Balance); source.Balance-=50; Console.WriteLine("Balance Attributes Set Tested Successfully"); Assert.AreEqual(50,source.Balance);
}
[Test(Description="取款测试")] public void WithDrawTest() { Account source=new Account(); source.Deposit(100.00F); source.Withdraw(20.00F); Assert.AreEqual(80,source.Balance); Console.WriteLine("Balance Attributes WithDraw Tested Successfully"); }
[Test(Description="存款测试")] public void DepositTest() { Account source=new Account(); source.Deposit(100.00F); Assert.AreEqual(100,source.Balance); Console.WriteLine("Balance Attributes Deposit Tested Successfully"); } }