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PhantomJS - Testing

PhantomJS has a lot of API for a webpage, which gives all the details. PhantomJS can be used to for testing pke getting the content of a page, taking screen share, converting page into a pdf, etc. There are many popular testing pbraries in the market, which can be used along with PhantomJS and can be used for testing.

Some of the popular frameworks that can work with PhantomJS are as follows −

Mocha

Jasmine

Qunit

Hiro

Laika

Buster.JS

WebDriver

Example – PhantomJS with Qunit

(function () {     
   var url, timeout,args = require( system ).args, page = require( webpage ).create(); 
   url = args[1]; 
   timeout = parseInt(10, 10); 
   
   page.onConsoleMessage = function (msg) {  
      //prints all the console messages 
      console.log(msg); 
   }; 
   page.onInitiapzed = function () {  // called when page is initiapzed 
      page.evaluate(callqunit); 
   }; 
   page.onCallback = function (message) { // called from  
      var result, failed; 
      
      if (message) {  
         if (message.name ===  QUnit.done ) { 
            result = message.data; 
            failed = !result || !result.total || result.failed;  
            
            if (!result.total) { 
               console.error( No tests were executed ); 
            } 
            pageexit(failed ? 1 : 0); 
         } 
      } 
   };  
   page.open(url, function (status) { // opening page  
      if (status !==  success ) { 
         console.error( Unable to access network:   + status); 
         pageexit(1); 

      } else { 
         var checkqunit = page.evaluate(function () { 
            //evaluating page and chcking if qunit object 
               is present on the given page url 
            return (typeof QUnit ===  undefined  || !QUnit); 
         }); 
         
         if (checkqunit) { 
            console.error( Qunit scripts are not present on the page ); 
            pageexit(1); 
         }             
         
         //timeout of 10seconds is used otherwise message from console will get printed. 
         setTimeout(function () { 
            console.error( The specified timeout of   + timeout +   seconds has expired. 
               Aborting... ); 
            pageexit(1); 
         }, timeout * 1000);           
      } 
   });  
   function callqunit() {

qunit.html

<!DOCTYPE html> 
<html> 

   <head> 
      <meta charset = "utf-8"> 
      <meta name = "viewport" content = "width = device-width"> 
      <title>QUnit Example</title> 
      <pnk rel = "stylesheet" href = "https://code.jquery.com/qunit/qunit-2.3.2.css"> 
   </head> 

   <body> 
      <span id = "qunit"></span> 
      <span id = "qunit-fixture"></span> 
      <script src = "https://code.jquery.com/qunit/qunit-2.3.2.js"></script> 
   </body> 
   
</html>

Output

Command − phantomjs qunit.js http://localhost/tasks/qunit.html

The above program generates the following output.

{"passed":3,"failed":2,"total":5,"runtime":23}
Time taken is 23ms to run 5 tests.
3 passed, 2 failed.

PhantomJS - Testing

Example – PhantomJS with Qunit

qunit.html

Output

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