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LambdaTest DocumentationVisual User Interface Testing ● Taking Screenshots of Pages Behind Login

Taking Screenshots of Pages Behind Login


LambdaTest offers Screenshot testing, a feature to automatically capture bulk, full-paged screenshots of any URL over different browsers. You can perform cross browser compatibility testing on both mobile, and desktop browsers at the same time. Also, you can capture up to 25 screenshots in a single test session.

This document will help you understand how you can capture bulk screenshots of your web-application, after the login page, for different browsers to measure the cross browser compatibility. Refer to our Automated Screenshot testing document to know more.

Understanding The Basics Of Login Profile


In order to capture screenshots after the login page of your website, you are required to configure a login profile in your LambdaTest account. This login profile will help you store the values for respective login fields such as ID, E-mail, along with the submit button using the Locators.

What are locators?
Locators are used to find HTML elements of a web page in your automation test script. Selenium offers 8 locators to help you identify the particular HTML element you are looking for:

  1. ID
  2. Name
  3. TagName
  4. CSS Selector
  5. XPath
  6. Class Name
  7. Link Text
  8. Partial Link Text

How This Works?

A Login URL is feeded into the browser. This URL is going to be the one pointing towards the login page of the website your wish to test, and would be different from the Screenshot Test URL.

Then the locators(Username, Password, Submit button) specified by you for your login page are searched by the Screenshot driver. If all fields are correct your test will pass onto next stage, if fields are incorrect then the test is marked as fail.

Now, the form gets submitted and your browser will wait for the new page to render.

Finally, the Screenshot test URL is fed into the Screenshot driver, allowing it to start generating automated screenshots in bulk, on your desired test configurations.

Note: We recommend using your Login profile for a single test session before attempting multiple screenshots for cross browser testing.

Getting Started With Automated Screenshot After Login


To begin, we need to configure a login profile which would specify the website under test, locators, and login credentials. This is a one-time process. Without further ado, let’s configure the Login profile.

Login in to your LambdaTest account and go to Screenshot by clicking on the drop down for Visual UI testing from the left-navigation menu.

go to screenshot in Visual UI testing

Set Up Login Profile

Configure the Login profile by clicking on the Login button and selecting a New Login+.

click on login and select new login+

Provide The Login URL

A window would pop-up where you need to fill the details, starting from the Login URL. Kindly ensure that you provide the URL of the login page for the website under test. Now, hit next.

enter login URL

Provide The Locators

Select the locator as per your respective fields in the Login form.

selenium locators

For demonstration, let us capture the details for LambdaTest Login.

Note: If you are already logged in to LambdaTest, make sure to perform this drill in the incognito mode.

Step 1: Go to https://accounts.lambdatest.com/login. Right-click and select the option to open the inspection tools. For demonstration, we are using the Google Chrome’s Dev Tools.

inspect dev tools

Step 2: Click on the highlighted arrow to help you select any element on your page to inspect.

select an element on the page to inspect

Step 3: Now, click on the Email field in the login form and you will notice that the name locator is populated with the value ’email’.

email field

Step 4: Switch to your normal browser where you are logged into the LambdaTest application. Provide the Email field details in the Username Locators.

provide the username locator

Step 5: Switch back to incognito mode and inspect the password field in the LambdaTest login form.

inspect the password field

Step 6: Provide the Password field details in the Password Locators.

provide the password details

Step 7: Back to incognito mode, and inspect the Login button. Perform a right click on the piece of code highlighted for login button, go to copy, and click copy XPath.

login button details

Note: In the above demonstration, you will find the class name placed for the login button in the LambdaTest login. However, class name may be similar for multiple HTML elements located in a login form, so it is considered a best practice to copy the XPath for such scenarios.

Step 8: Now, on your normal browser, Select the XPath locator and paste the copied XPath for the Login button locator and hit next.

provide login button locator

Provide The Login Credentials

Under the credentials, provide your login details for the website you wish to test and hit next. For a demonstration, you can provide your LambdaTest login details.

login credentials

Save The Login Profile

When you are done configuring the Login URL, Locators, and Credentials for your web-application under test, you only need to provide a name to save this login profile.

save login profile

Once you hit the save button, you will find the below prompt indicating that the profile has been successfully created.

profile created

Kudos, you have successfully configured the Login profile. This profile will be saved in your LambdaTest account so the next time you need to run a similar test then all you would need is to enable the flag for this Login profile.

enable login profile

Running Automated Screenshot After The Login Page


Step 1: Login to LambdaTest and go to Screenshot Testing. Enable the flag for the profile you wish to test.

enable login profile

Step 2: Now, enter the Screenshot Test URL and hit the capture button. To carry out the above demonstration, we are making use of the Test URL: https://integrations.lambdatest.com/

provide screenshot test URL

Step 3: You will find all the screenshots generated for the web page that is accessible after login.

output for screenshot after login page in LambdaTest application.

Let us know in case you have any questions, drop us an email to support@lambdatest.com or simply give us a shout. We are here to help you speed your test suites 24/7. Happy testing! 🙂