点击菜单“项目”->“添加类”，打开“添加新项”对话框，将名称改为BookTest.vb或BookTest.cs、BookTest.jsl，然后点击“添加”按钮创建该类并修改代码。VB代码如下：
Imports NUnit.Framework
 
<TestFixture()> _
Public Class BookTest
Dim bo As Book = Nothing
 
<SetUp()> _
Public Sub Init()
Console.WriteLine("测试开始！")
bo = New Book
Console.WriteLine("book对象被初始化！")
End Sub
 
<Test()> _
Public Sub testId()
bo.id = "001" '设置id属性的值为
'使用Assert查看id属性的值是否为
Assert.AreEqual("001"， bo.id)
Console.WriteLine("id属性被测试！")
End Sub
 
<Test()> _
Public Sub testName()
bo.name = "ASP" '设置name属性的值为ASP
'使用Assert查看name属性的值是否为JSP，这是个必然出现错误的测试
Assert.AreEqual("JSP"， bo.name)
Console.WriteLine("name属性被测试！")
End Sub
 
<TearDown()> _
Public Sub Dispose()
Console.WriteLine("book对象将被清理！")
bo = Nothing
Console.WriteLine("测试结束！")
End Sub
End Class
C#代码如下：
using System;
using System.Collections.Generic;
using System.Text;
using NUnit.Framework;
 
namespace NUnitCS
{
[TestFixture]
public class BookTest
{
private Book book = null;
 
[SetUp]
public void Init()
{
Console.WriteLine("测试开始！");
book = new Book();
Console.WriteLine("book对象被初始化！");
}
 
[Test]
public void testId()
{
book.id = "001"; //设置id属性的值为
//使用Assert查看id属性的值是否为
Assert.AreEqual("001"， book.id);
Console.WriteLine("id属性被测试！");
}
 
[Test]
public void testName()
{
book.name = "ASP"; //设置name属性的值为ASP
//使用Assert查看name属性的值是否为JSP，这是个必然出现错误的测试
Assert.AreEqual("JSP"， book.name);
Console.WriteLine("name属性被测试！");
}
 
[TearDown]
public void Dispose()
{
Console.WriteLine("book对象将被清理！");
book = null;
Console.WriteLine("测试结束！");
}
}
}
J#代码如下：
package NUnitJS;
 
import System.*;
import NUnit.Framework.*;
 
/** @attribute TestFixture() */
public class BookTest
{
private Book book = null;
 
        /** @attribute SetUp() */
        public void Init()
        {
            Console.WriteLine("测试开始！");
            book = new Book();
            Console.WriteLine("book对象被初始化！");
        }
 
        /** @attribute Test() */
        public void testId()
        {
            book.set_id("001"); //设置id属性的值为001
            //使用Assert查看id属性的值是否为001
            Assert.AreEqual("001"， book.get_id());
            Console.WriteLine("id属性被测试！");
        }
 
        /** @attribute Test() */
        public void testName()
        {
            book.set_id("ASP"); //设置name属性的值为ASP
            //使用Assert查看name属性的值是否为JSP，这是个必然出现错误的测试
            Assert.AreEqual("JSP"， book.get_name());
            Console.WriteLine("name属性被测试！");
        }
 
        /** @attribute TearDown() */
        public void Dispose()
        {
            Console.WriteLine("book对象将被清理！");
            book = null;
            Console.WriteLine("测试结束！");
        }
}