TestScroll.cs

 using System; 
 using NUnit.Framework; 
 namespace Notepad 
 { 
 [TestFixture] public class TestScroll: Assertion 
 { 
 [Test] public void HookUp() { 
 Assert("hooked up", true); 
 } 
 [Test] public void ScrollHappens() { 
 int selectionStart = 1; 
 string[] lines = new String[] { "hello", "world" }; 
 MockTextBox mock = new MockTextBox(); 
 XMLNotepad notepad = new XMLNotepad(); 
 Assert("no scroll", !mock.Scrolled); 
 notepad.PutText(mock, lines, selectionStart); 
 Assert("scroll happens", mock.Scrolled); 
 } 
 } 
 }