透析QTP自动化测试框架SAFFRON

但是SAFFRON仅仅是一个基础框架，我们还需要进一步地对其扩展才能应用到实际的WEB自动化测试项目中去，例如扩展对更多的控件的支持。下面是一个对Activate函数扩展Image对象的点击操作的过程：

（1）首先打开SAFFRON框架的VBS文件，找到开头的变量定义处，添加Image对象，让框架可以识别和支持Image对象：
     ' 扩展对Image对象的支持
     objects = "Link|WebButton|WebList|WebEdit|Image"
     objectsDescription = "micclass:=Link|micclass:=WebButton|micclass:=WebList|micclass:=WebEdit|micclass:=Image"

（2）修改Activate方法，添加对Image对象的Click操作的支持，脚本修改成如下所示：
     ' Activates an object based upon its object type
     ' objtype - the type of object should be limited to values in the object array
     ' text    - identifying text for the control - for a link, it's the text of the link
     Public Function Activate (objtype, text)
      localDesc = ""
      If thirdlevel <> "" Then
       localDesc = GenerateDescription(level(2))
      Else
       localDesc = GenerateDescription(level(1))
      End If
     
      AutoSync() 
     
      Select Case objtype
      Case  "Link"
       Execute localDesc & GenerateObjectDescription("Link","innertext:=" & text) & "Click"
       Report micPass, "Link Activation", "The Link " & Quote(text) & " was clicked."
      Case "WebButton"
       Execute localDesc & GenerateObjectDescription("WebButton", "value:=" & text) & "Click"
       Report micPass, "WebButton Activation", "The WebButton " & Quote(text) & " was clicked."
      ' 扩展对Image类型的按钮的支持
      Case "Image"
       Execute localDesc & GenerateObjectDescription("Image", "alt:=" & text) & "Click"
       Report micPass, "ImageButton Activation", "The ImageButton " & Quote(text) & " was clicked."
      End Select
     End Function

（3）调试和测试修改后的脚本，例如采用下面的脚本来看对Activate函数的扩展是否生效：
     ' 启动浏览器
     Launch "website","http://127.0.0.1:1080"
     ' 导航到“http://127.0.0.1:1080/WebTours”
     BrowseTo "http://127.0.0.1:1080/WebTours/"
     
     ' 输入用户名
     EnterTextIn "username","chennengji" 
     ' 输入密码
     EnterTextIn "password","123"
     
     ' 单击Login按钮
     Activate "Image","Login"
     
     ' 单击"Flights"按钮
     Browser("Web Tours").Page("Web Tours").Frame("navbar").Image("Search Flights Button").Click
     
     ' 获取航班起始城市
     DepartureCity = GetTextFrom( "WebList","depart")
     ' 获取航班终点城市
     ArrivalCity = GetTextFrom( "WebList","arrive")
     ' 获取乘客数量
     PassengerNumber = GetTextFrom( "WebEdit","numPassengers")
     
     ' 选择航班起始城市为"San Francisco"
     SelectFromList  "depart","San Francisco"
     
     If Verify ("Link","administration")= False then
      Reporter.ReportEvent micFail,"检查链接","链接不存在"
      Else
         ' 点击名为“administration”的链接
         Activate "Link","administration"
     End IF

脚本的测试结果如图所示：

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