Watir截屏功能的实现

发布: 2009-9-25 13:23 | 作者: webmaster | 来源: | 查看: 391次 | 进入软件测试论坛讨论

Step1.下载并安装Rmagick
Step2.下载并安装win32screenshot
Step3.编辑Win32Screenshot.rb
1.

module Win32

改为

module Win32Screenshot

2.找到

USER32 = DL.dlopen("user32")
EnumWindows = USER32['EnumWindows', 'IPL']
GetWindowTextLength = USER32['GetWindowTextLengthA' ,'LI' ]
GetWindowText = USER32['GetWindowTextA', 'iLsL' ]

下面加入

ShowWindow= USER32['ShowWindow', 'LIL' ]
BringWindowToTop=USER32['BringWindowToTop','LI']

3.找到

SRCCOPY = 0xCC0020
GMEM_FIXED = 0
DIB_RGB_COLORS = 0

下面加入

SW_SHOWMAXIMIZED = 3

4.找到

def capture_hwnd(hwnd)
hScreenDC = getDC(hwnd)

两行之间插入

   ShowWindow.call(hwnd,SW_SHOWMAXIMIZED)
   setForegroundWindow(hwnd)
   BringWindowToTop.call(hwnd)

Step4.编辑Watir.rb
1.文件开头加入

require 'win32screenshot'
require 'rubygems'
require 'RMagick'

2.Class IE中加入方法

def captureGif(file)

   width, height, bmp =Win32Screenshot::Screenshot.capture_hwnd(@ie.hwnd)
   img = Magick::Image.from_blob(bmp)
   png = img[0].to_blob do
   self.format = 'gif'
end
File.open(file, "wb") {|io| io.write(png)} unless file.nil?
end

Step5.over用下面的代码试一下效果

require 'watir' # the watir controller
# open the IE browser
ie = Watir::IE.new
ie.maximize
# Step 1: go to the test site: http://www.google.com
ie.goto("http://www.google.com")
ie.captureGif('c:/google1.gif')
# Step 2: enter 'pickaxe' in the search text field
ie.text_field(:name, "q").set("什么")    # q is the name of the search field
ie.captureGif('c:/google2.gif')
# Step 3: click the 'Google Search' button
ie.button(:name, "btnG").click                # "btnG" is the name of the Search button
ie.captureGif('c:/google3.gif')
# Actual Result: Check that the 'Programming Ruby' link appears on the results page
if  ie.contains_text("什么是-什么是什么，搜搜就知道！")
   puts "Test Passed. Found the test string: '什么是-什么是什么，搜搜就知道！'. Actual Results match Expected Results."
else
   puts "Test Failed! Could not find: '什么是-什么是什么，搜搜就知道！'"
end
# End of test: Google search