Selenium – CosmoCode (Formerly TeachMeSelenium)

How to scroll element to mid/center, top or bottom of the screen in Selenium?

We all come across scenarios where we need to interact with an element that is not in the visible area of the browser. That element may be in the. bottom of the page or top of the page if the page is already scrolled down. In general, WebDriver scrolls the element into view when we …

How to resize the browser window, zoom in or zoom out the page content in Selenium?

Sometimes we need to resize the browser window in our Selenium tests. There could be various scenarios why we would want to do that. While debugging a failure on remote execution vs local execution there could be a case that the tests are running with a specific browser size when executed via CI/CD mechanism on …

How to interact with shadow DOM in Selenium?

In one of my recent automation projects, I was writing code to click on a certain element on the webpage. It was a very simple element with an id avatar. To my surprise, Selenium failed to find that element and threw an exception NoSuchElementException . I inspected that element more carefully and found out that …

How to disable insecure password warning in Firefox for Selenium?

If you use Selenium and Firefox version 52 or higher for running the automated tests and your development site does not use SSL, you will get the following warning when entering passwords on your login page This connection is not secure. Logins entered here could be compromised Firefox will also open the URL https://support.mozilla.org/en-US/kb/insecure-password-warning-firefox?as=u&utm_source=inproduct in a new …

Interacting with the Elements in the page | Getting the list of elements and Child Element

In the Previous Tutorial, we learned to locate elements and perform the action on them. In this tutorial, we will learn some advanced ways to locate elements. Getting the list of elements with the matching locator Sometimes we may need to find all elements on the page that matches a particular locator. For instance, get …

How to connect Selenium to an existing browser that was opened manually?

Sometimes we come across scenarios where we want Selenium to connect to and use an existing browser that was previously opened manually or by some other program. Why do we want Selenium to connect to a previously opened browser? Maybe you want to perform some tasks that require manual intervention before kicking in automation execution. …

WebDriver Exceptions

Every programmer has to deal with exceptions or errors. Often beginner programmers get dishearten if their code start throwing Exceptions and they have no clue how to deal with it. In this tutorial, we’ll dig deeper to Exceptions world and will try to make friends with them. If you want to be an efficient programmer you …

How to automate email validation?

Sometimes we are required to automate a test that asks the user to validate email. e.g. on registering a new user, a welcome email is sent to the user’s registered email address. One simple way is to open the webmail in the browser and automate it like any other web application. However, it has some …

Selenium Grid | Running tests on SauceLabs’ cloud machines

In the Previous Tutorial, we learned how to run a test in the Selenium grid architecture. You must have realised that to use Selenium Grid, you need to maintain your own infrastructure for the nodes. There are some providers who provide a Selenium Grid as a service in the cloud – Sauce Labs, BrowserStack and …

Selenium Grid | RemoteWebDriver and DesiredCapabilities

In the Previous Tutorial, you learned how to implement the Selenium Grid architecture. In this tutorial, I’ll write code to utilise that setup and run the test on a node. In the Selenium grid architecture, only the steps to setup test is different. Once you have launched the browser, rest of the WebDriver code is same …

Selenium Grid | Setting up Hub and Nodes

In the Previous Tutorial, we learned some advanced user interactions like automating mouse and keyboard movements. In this tutorial, we’ll learn to distribute our tests on remote machines. What is Selenium Grid? Selenium Grid provides a mechanism where we can run tests in a distributed environment against multiple browsers and operating systems. It works as a …

Advanced User Interactions | Automating Keyboard press events

Quick Reference for key-press automation In the Previous Tutorial, we learned to automate drag-drop operations. In this tutorial, we’ll learn ways to automate different keyboard press events. Automating a use case for keypress Go to Automation Practice (Beginner) page Press ‘SHIFT’ and then enter values in the input box to simulate typing in upper-case. Press Ctrl-a to …

Advanced User Interactions | Performing drag and drop operations

Quick Reference to perform drag-drop In the Previous Tutorial, we covered the following – Introduction to Actions class Action interface Using moveToElement() method to move the mouse over an element Methods build() and perform() In this tutorial, we’ll learn to perform mouse drag-drop operations. Use dragAndDropBy() method to drag a slider from left to right by …

Advanced User Interactions | Introducing Actions and moving the mouse over an element

In the Previous Tutorial, we learned to execute a piece of Javascript through WebDriver. In this tutorial, we’ll learn some advanced user interactions. What is advanced user interactions? Sometimes we need to interact with our system’s mouse or keyboard to simulate user interaction. For instance, let’s say, in a web application, there is a menu bar. On …

Interacting with the browser | Executing JavaScript through JavascriptExecutor

In the Previous Tutorial, we learned to take the screenshot of the page. In this tutorial, we’ll explore ways to execute a piece of Javascript through the WebDriver. What the heck is JavaScript? Well, JavaScript is a scripting language that runs on Client-side, i.e on the browser (those who are smarter please forget about node.js for a …

Interacting with the browser | Taking the screenshot of the page

In the Previous Tutorial, we learned how to do cross-browser execution. In this tutorial, we’ll learn how to take the page screenshot. In real life Test Automation projects we are generally required to take page screenshot periodically, especially if a step fails. We can use the screenshot as steps to reproduce the failure. WebDriver code …

Interacting with the browser | Running test on different browsers

In the Previous Tutorial, we learned to handle popup windows and alert dialogues. Some of our readers must be wondering, in all previous tutorials, we are running test in Chrome browser only. What if we want to execute the same script on different browsers like Mozilla Firefox, Apple Safari, Microsoft Edge, Internet Explorer etc? In …

Handling Alert dialog, Popup windows and Frames | Handling Popup windows

In the Previous Tutorial, we learned how to handle the Alert window. In this tutorial, we will learn to handle popup windows. We’ll write code to switch over multiple browser windows and perform some actions on them. As we can see on Automation Practice page, there is a link Click Me to open New Window. If we click on …

Handling Alert dialog, Popup windows and Frames | Handling Alert dialog

In the Previous Tutorial, we learned how to handle timeout issues in Selenium. In this tutorial, we will learn how to handle Alert windows. What is an Alert window? You must have noticed that on clicking some links/buttons, the page displays an alert window that asks the user to confirm if she or he wants to …

Waits | Explicit wait

In the Previous Tutorial, we learned the following ways of handling synchronization issues – What are the timeout/wait issues in Test Automation? How to address it by waiting for the element before performing the action? Getting the list of elements with a matching locator Instructing code to wait for the predefined time – Hardcoded wait Issues …