mockassemblywatcher.cs

C#编写的网络爬虫程序 效率很高 很好用！

#region Copyright (c) 2003, James W. Newkirk, Michael C. Two, Alexei A. Vorontsov, Charlie Poole, Philip A. Craig
/************************************************************************************
'
' Copyright  2002-2003 James W. Newkirk, Michael C. Two, Alexei A. Vorontsov, Charlie Poole
' Copyright  2000-2002 Philip A. Craig
'
' This software is provided 'as-is', without any express or implied warranty. In no 
' event will the authors be held liable for any damages arising from the use of this 
' software.
' 
' Permission is granted to anyone to use this software for any purpose, including 
' commercial applications, and to alter it and redistribute it freely, subject to the 
' following restrictions:
'
' 1. The origin of this software must not be misrepresented; you must not claim that 
' you wrote the original software. If you use this software in a product, an 
' acknowledgment (see the following) in the product documentation is required.
'
' Portions Copyright  2002-2003 James W. Newkirk, Michael C. Two, Alexei A. Vorontsov, Charlie Poole
' or Copyright  2000-2002 Philip A. Craig
'
' 2. Altered source versions must be plainly marked as such, and must not be 
' misrepresented as being the original software.
'
' 3. This notice may not be removed or altered from any source distribution.
'
'***********************************************************************************/
#endregion

using System;
using System.IO;
using NUnit.Util;

namespace NUnit.Tests.Util
{
	/// <summary>
	/// MockAssemblyWatcher provides way of triggering change
	/// events for test purposes.
	/// </summary>
	public class MockAssemblyWatcher : AssemblyWatcher
	{
		private bool eventPublished = false;

		private DateTime triggerTime;
		private DateTime publishTime;

		public MockAssemblyWatcher( int delay, string assemblyFileName )
			: base( delay, assemblyFileName ) { }
		
		public bool EventPublished
		{
			get { return eventPublished; }
		}

		public int ElapsedTime
		{
			get 
			{ 
				TimeSpan elapsed = publishTime - triggerTime;
				return (int)elapsed.TotalMilliseconds;
			}
		}

		public void TriggerEvent( int delay )
		{
			Delay = delay;
			TriggerEvent( );
		}

		public void TriggerEvent( )
		{
			eventPublished = false;
			triggerTime = DateTime.Now;

			OnChanged( this, 
				new FileSystemEventArgs( WatcherChangeTypes.Changed, 
				GetFileInfo(0).DirectoryName, 
				GetFileInfo(0).Name ) );
		}

		public int Delay
		{
			get { return (int)timer.Interval; }
			set { timer.Interval = value; }
		}

		protected new void PublishEvent()
		{
			publishTime = DateTime.Now;

			base.PublishEvent();
			eventPublished = true;
		}
	}
}