今天看了一下Watir的相关内容，写了个HelloWorld。
Watir is a testing tool for automating browser-based tests of web applications. It is a Ruby library that works with Internet Explorer and Firefox.
http://rubyforge.org/projects/wtr/
目前最新版本是：watir1.6.5 November 10, 2009
watir的安装不是很容易，下面是成功安装的方法：
1、下载并安装这个ruby安装包：
http://rubyforge.org/frs/download.php/29263/ruby186-26.exe
2、下载并安装watir1.5.2：
http://rubyforge.org/frs/download.php/24880/watir-1.5.2.gem
更新gem：
gem update –system
去到watir1.5.2所在的目录，执行：
gem install watir-1.5.2.tar
编写一个HelloWorld.rb：
require 'watir'
test_site = 'http://blog.csdn.net/testing_is_believing/'
# open the IE browser
ie = Watir::IE.new
# print some comments
puts "## Beginning of test"
puts " "
puts "Step 1: go to the test site: " + test_site
ie.goto(test_site)
puts " Action: entered " + test_site + " in the address bar."
尝试运行成功！