Watir - Capturing Screenshots

Ability to capture screenshots is one of the interesting features available with Watir. During the test automation, you can take screenshots and save the screens. In case, if any error occurs the same can be documented with the help of screenshot.

A simple example along with test page where we have taken the screenshot is discussed below −

Syntax

browser.screenshot.save 'nameofimage.png'

Test page

<html>
   <head>
      <title>Testing UI using Watir</title>
   </head>
   
   <body>
      <script type = "text/javascript">
         function wsentered() {
            console.log("inside wsentered");
            var firstname = document.getElementById("firstname");
            
            if (firstname.value != "") {
               document.getElementById("displayfirstname").innerHTML = 
                  "The name entered is : " + firstname.value;
               
               document.getElementById("displayfirstname").style.display = "";
            }
         }
      </script>
      <div id = "divfirstname">
         Enter First Name :
         <input type = "text" id = "firstname" name = "firstname" onchange = "wsentered()" />
      </div>
      <br/>
      <br/>
      <div style = "display:none;" id = "displayfirstname"></div>
   </body>
</html>

Example

require 'watir'
b = Watir::Browser.new :chrome
b.goto('http://localhost/uitesting/textbox.html')
t = b.text_field(id: 'firstname') // using the id of the textbox to locate the textbox
t.exists?
t.set 'Riya Kapoor'
b.screenshot.save 'textboxbefore.png'
t.value
t.fire_event('onchange')
b.screenshot.save 'textboxafter.png'

The screenshots we have taken using Watir are shown here −

textboxbefore.png

textboxafter.png