如何用Selenium IDE 实现简单的循环和条件语句

Selenium IDE下载地址：

 http://seleniumhq.org/download/

Selenium是一个很好用的Web界面测试框架。但它的功能也有不足之处，比如： 在Selenium IDE中不支持程序控制语句。下面介绍如何在Selenium IDE中添加程序控制功能。

1） 下载Selenium插件 （sideflow.js）：　

 如果不想下载，直接把下面的代码保存到本机也可。

2） 简单的应用 if-else function 我们一般会用到gotoIf，gotolabel和label这三个command，在selenium ide里按照command | target | value的顺序举个简单的例子：

举例录制新浪通行证的注册模块：

添加sideflow.js文件的步骤，需要在selenium的options——general中添加sideflow.js文件，添加后重启Selenium IDE。

其中sideflow.js的下载地址：

https://github.com/darrenderidder/sideflow/blob/master/sideflow.js

sideflow.js的代码如下：

   

var  gotoLabels =  {};

var  whileLabels  =  {};

// overload the original Selenium reset function

Selenium . prototype . reset  =  function ()  {

     // reset the labels

     this . initialiseLabels ();

     // proceed with original reset code

     this . defaultTimeout  =  Selenium . DEFAULT_TIMEOUT ;

     this . browserbot . selectWindow ( "null" );

     this . browserbot . resetPopups ();

}

Selenium . prototype . initialiseLabels  =  function ()

{

     gotoLabels  =  {};

     whileLabels  =  {  ends :  {},  whiles :  {}  };

     var  command_rows  =  [];

     var  numCommands  =  testCase . commands . length ;

     for  ( var  i  =  0 ;  i  < numCommands; ++i) {

         var  x  =  testCase . commands [ i ];

         command_rows . push ( x );

     }

     var  cycles  =  [];

     var  forEachCmds  =  [];

     for (  var  i  =  0 ;  i  < command_rows.length; i++ ) {

         if  ( command_rows [ i ]. type  ==  'command' )

         switch (  command_rows [ i ]. command . toLowerCase ()  )  {

             case  "label" :

                 gotoLabels [  command_rows [ i ]. target  ]  =  i ;

                 break ;

             case  "while" :

             case  "endwhile" :

                 cycles . push (  [ command_rows [ i ]. command . toLowerCase (),  i ]  )

                 break ;

             case  "foreach" :

             case  "endforeach" :

                 forEachCmds . push (  [ command_rows [ i ]. command . toLowerCase (),  i ]  )

                 break ;

         }

     }

     var  i  =  0 ;

     while (  cycles . length  )  {

         if (  i  >=  cycles . length  )  {

             throw  new  Error (  "non-matching while/endWhile found"  );

         }

         switch (  cycles [ i ][ 0 ]  )  {

             case  "while" :

                 if (  (  i + 1  < cycles.length ) && ( "endwhile" == cycles[i+1][0] )) {

                     // pair found

                     whileLabels . ends [  cycles [ i + 1 ][ 1 ]  ]  =  cycles [ i ][ 1 ];

                     whileLabels . whiles [  cycles [ i ][ 1 ]  ]  =  cycles [ i + 1 ][ 1 ];

                     cycles . splice (  i ,  2  );

                     i  =  0 ;

                 }  else  ++ i ;

                 break ;

             case  "endwhile" :

                 ++ i ;

                 break ;

         }

     }

}

Selenium . prototype . continueFromRow  =  function (  row_num  )

{

     if ( row_num  ==  undefined  ||  row_num  ==  null  ||  row_num  < 0) {

         throw  new  Error (  "Invalid row_num specified."  );

     }

     testCase . debugContext . debugIndex  =  row_num ;

}

// do nothing. simple label

Selenium . prototype . doLabel  =  function (){};

Selenium . prototype . doGotoLabel  =  function (  label  )

{

     if (  undefined  ==  gotoLabels [ label ]  )  {

         throw  new  Error (  "Specified label '"  +  label  +  "' is not found."  );

     }

     this . continueFromRow (  gotoLabels [  label  ]  );

};

Selenium . prototype . doGoto  =  Selenium . prototype . doGotoLabel ;

Selenium . prototype . doGotoIf  =  function (  condition ,  label  )

{

     if (  eval ( condition )  )  this . doGotoLabel (  label  );

}

Selenium . prototype . doWhile  =  function (  condition  )

{

     if (  ! eval ( condition )  )  {

         var  last_row  =  testCase . debugContext . debugIndex ;

         var  end_while_row  =  whileLabels . whiles [  last_row  ];

         if (  undefined  ==  end_while_row  )  throw  new  Error (  "Corresponding 'endWhile' is not found."  );

         this . continueFromRow (  end_while_row  );

     }

}

Selenium . prototype . doEndWhile  =  function ()

{

     var  last_row  =  testCase . debugContext . debugIndex ;

     var  while_row  =  whileLabels . ends [  last_row  ]  -  1 ;

     if (  undefined  ==  while_row  )  throw  new  Error (  "Corresponding 'While' is not found."  );

     this . continueFromRow (  while_row  );

}

Selenium . prototype . doPush =  function ( value ,  varName )

{

     if ( ! storedVars [ varName ])  {

         storedVars [ varName ]  =  new  Array ();

     }

     if ( typeof  storedVars [ varName ]  !==  'object' )  {

         throw  new  Error ( "Cannot push value onto non-array "  +  varName );

     }  else  {

         storedVars [ varName ]. push ( value );

     }

}