照http://watir.com/installation/的来。windows系统, 无防火墙。
1. 安装
ruby。先是下载了ruby1.8.6,但是后面安装时某一步报1.8.6不行(好像是rubygems-update)，要我装1.8.7，于是重新下载再装一遍。安装时选中把ruby添加到路径里，省得后面再设。
2. gem update --system
3. gem install watir 这一步自动装了watir1.7.1
4. 装firefox plugin.
然后就是试用了。ruby有两种执行方式，一种是交互式执行，敲入irb，然后
require 'watir'，会报no such file to load -- watir的错误，
google一下会知道，需要先执行require 'rubygems'，再执行require 'watir'就可以了。当然这样敲太麻烦了，适合调试吧。
另一种执行方式是ruby
test.rb，test.rb是要执行的代码。可以从http://wiki.openqa.org/download/attachments/14614665/google_search.rb?version=1&modificationDate=1226438427170下载watir的基本的google search例子，我把具体代码贴在
文章后面，就是启动ie，操作一些页面元素而已。把这个例子保存为google_search.rb，然后执行ruby google_search.rb，就可以看到自动运行的效果了。
http://www.zhuaijun.cn/archives/53这个链接还给出了中文支持，ide安装等，暂时不需要，就不管了。里面还提到
"watir也有现存的弱点，对Frame和javascript支持不好，当我看完ruby语言，看完watir内置方法，配置好所有的环境准备开工之
时，忽然发现项目的页面全是js调用出来的，从HTML根本看不到任何元素，额的神啊，当我了解这个真相以后，绝望了。。。"。
如果真不能支持javascript，那是很麻烦的。查了一下，http://blog.csdn.net/Testing_is_believing/archive/2010/01/24/5251229.aspx里有提到怎么在watir中调用javascript脚本。不是很确定这样是否能把javascript执行后给出的页面源代码拿出来。有空再仔细研究吧。
google_search.rb代码(已加入require "rubygems"代码):
# Please, when you update this file, update also http://wiki.openqa.org/display/WTR/Example+Test+Case
#-------------------------------------------------------------#
# Demo test for the Watir controller.
#
# Purpose: to demonstrate the following Watir functionality:
# * entering text into a text field,
# * clicking a button,
# * checking to see if a page contains text.
# Test will search Google for the "pickaxe" Ruby book.
#-------------------------------------------------------------#
# the Watir controller
require "rubygems"
require "watir"
# set a variable
test_site = "http://www.google.com"
# open the IE browser
ie = Watir::IE.new
# print some comments
puts "Beginning of test: Google search."
puts " Step 1: go to the test site: " + test_site
ie.goto test_site
puts " Step 2: enter 'pickaxe' in the search text field."
ie.text_field(:name, "q").set "pickaxe" # "q" is the name of the search field
puts " Step 3: click the 'Google Search' button."
ie.button(:name, "btnG").click # "btnG" is the name of the Search button
puts " Expected Result:"
puts " A Google page with results should be shown. 'Programming Ruby' should be high on the list."
puts " Actual Result:"
if ie.text.include? "Programming Ruby"
puts " Test Passed. Found the test string: 'Programming Ruby'. Actual Results match Expected Results."
else
puts " Test Failed! Could not find: 'Programming Ruby'."
end
puts "End of test: Google search."
