ConfigWatcherTest.cs :  » Persistence-Frameworks » iBATIS.NET » IBatisNet » Common » Test » NUnit » CommonTests » ConfigWatcher » C# / CSharp Open Source

using System;
using System.IO;
using System.Collections;
using System.Reflection;
using System.Threading;

using IBatisNet.Common.Utilities;

using IBatisNet.Common.Test.NUnit;

using NUnit.Framework;

namespace IBatisNet.Common.Test.NUnit.CommonTests.ConfigWatcher{
  /// <summary>
  /// Summary description for ConfigWatcherTest.
  /// </summary>
    [TestFixture] 
  public class ConfigWatcherTest
  {
      private bool _hasChanged = false;

      #region SetUp & TearDown

      /// <summary>
      /// SetUp
      /// </summary>
      [SetUp] 
      public void SetUp() 
      {
        _hasChanged = false;    
      }


      /// <summary>
      /// TearDown
      /// </summary>
      [TearDown] 
      public void Dispose()
      { 
      } 

      #endregion

      #region Test ConfigurationWatcher

      /// <summary>
      /// ConfigurationWatcher Test
      /// </summary>
      [Test] 
      public void ConfigurationWatcherTest() 
      {
        Assembly a = Assembly.GetExecutingAssembly();
        Uri uri = new System.Uri(a.CodeBase); 
        string binDirectory = Path.GetDirectoryName(uri.LocalPath);
        string fileName = "test.config";

        // Configure a watcher
        ConfigureHandler configureDelegate = new ConfigureHandler( Configure );
        ConfigWatcherHandler.ClearFilesMonitored();
        ConfigWatcherHandler.AddFileToWatch( Resources.GetFileInfo( fileName) );

        TimerCallback callBakDelegate = new TimerCallback( ConfigWatcherTest.OnConfigFileChange );

        StateConfig state = new StateConfig();
        state.FileName = fileName;
        state.ConfigureHandler = configureDelegate;

        new ConfigWatcherHandler( callBakDelegate, state );

        FileInfo fi = Resources.GetFileInfo( fileName);
        fi.LastWriteTime = DateTime.Now;

        fi.Refresh();

        // Let's give a small bit of time for the change to propagate.
        // The ConfigWatcherHandler class has a timer which 
        // waits for 500 Millis before delivering
        // the event notification.
        System.Threading.Thread.Sleep(600); 

        Assert.IsTrue(_hasChanged);
      }

      protected void Configure(object obj)
      {
        _hasChanged = true;  
      }

      /// <summary>
      /// Called when the configuration has been updated. 
      /// </summary>
      /// <param name="obj">The state config.</param>
      public static void OnConfigFileChange(object obj)
      {
        StateConfig state = (StateConfig)obj;
        state.ConfigureHandler(null);
      }


      #endregion
  }
}