TextTextBox.cs

You might note an inconsistency in the coding style here. I used bool rather than Boolean. It would be better to be consistent, but in this case I fell short of that goal. You ll probably find other examples as you go through the book. They re part of my learning process, and I ll point them out when I notice them.

Also notice the commented-out code here. It s the result of an attempt to write a test that I later decided was a dead end. I should have had the courage to delete the code, but I must have decided to keep it in case I needed it. As far as I can tell from here, I never needed it. You can draw the obvious lesson from that and delete such things. Trust your code manager to keep a copy, or print the code and keep a big stack of paper in your bottom desk drawer .

 using System; 
 using System.Windows.Forms; 
 using NUnit.Framework; 
 namespace Notepad 
 { 
 [TestFixture] public class TestTextBoxEvent : Assertion { 
 bool changed; 
 [SetUp] public void ClearChanged() { 
 changed = false; 
 } 
 [Test] public void CheckEvent() { 
 TestableTextBox text = new TestableTextBox(); 
 text.Text = "some text"; 
 Assert(!changed); 
 text.TextChanged += new EventHandler(Text_Changed); 
 text.Text = "more text"; 
 Assert(changed); 
 } 
 //    [Test] public void HookForm () { 
 //      TestableTextBox text = new TestableTextBox(); 
 //      text.TextChanged += new EventHandler(Text_Changed); 
 //      XMLNotepad xn = new XMLNotepad(); 
 //      xn.textbox = text; 
 //      text.Text = "some text"; 
 //      xn.PutText(); 
 //      AssertEquals("hello", text.Lines[0]); 
 //      Assert("changed flag", changed); 
 //    } 
 void Text_Changed(object source, EventArgs args) { 
 changed = true; 
 } 
 } 
 }