What is Selenium WebDriver? An Essential Tool for Automated Web Testing
Testing plays a crucial role in the developmental cycle and is mandatory for assuring the quality and stability of
Testing plays a crucial role in the developmental cycle and is mandatory for assuring the quality and stability of the applications. By implementing web testing one can easily find and fix bugs in the code before they cause problems for the users. Web testing can be carried out in multiple ways, including manual, and automated. However, automated web testing is a common procedure for executing test cases, as it entitles testers to examine the applications swiftly and proficiently.
Selenium is the most common and recognized framework for carrying out automated web testing, as it permits testers to generate tests in multiple programming languages and run them on different browsers and operating systems. The most common tool of Selenium is Selenium WebDriver. Now, you must be wondering What is Selenium WebDriver and must be inquisitive to know more about it. Then you are at the right place.
This article will provide you with all the necessary information that you want to Know about Selenium WebDriver. It will also highlight its definition, features, uses, and expected functioning for automating web testing.
Understanding Selenium WebDriver
Selenium WebDriver is a framework that explains a set of methods. It is a WebDriver that enables the automation of browsers and web application testing across multiple browsers. Selenium API has offered several classes and frameworks to work with numerous browsers and HTML elements. However, execution is done by the browser-specific classes. Some of the implementation classes are iPhoneDriver, AndroidDriver, FirefoxDriver, ChromeDriver, InternetExplorerDriver, SafariDriver etc.
The WebDriver’s main function is to control the browser. It also helps testers to select the HTML page elements and perform operations on them such as clicking, filling a form field, etc. If testers want to execute the test cases in a Firefox browser they will have to use FirefoxDriver class. Similarly, if testers want to execute the test cases in the Chrome browser they have to use the ChromeDriver class.
Importance of Selenium WebDriver
Selenium WebDriver is most commonly used for application testing as it is flexible, simple, and easy to use with different programming languages. It is faster than other tools and can complete test scripts quickly. A robust community of users prefers Selenium WebDriver as a tool.
Testers can automate browser interactions in real-life situations, which is perfect for cross-browser testing. It also enables testers to ensure the website performs as intended on different browsers. By mastering Selenium WebDriver, testers gain the skills to :
- Automate Complex Web Applications.
- Support for Multiple Browsers.
- Open-source and Community Support.
- Integration with CI/CD Pipelines.
- Career Advancement.
Advantages of Selenium Webdriver
Selenium WebDriver stands out as a highly prominent open-source tool in the realm of web testing, particularly known for its capabilities in automation and browser interaction. Let’s delve more into its advantages:
Enhances reusability – The compatibility of the same code with various platforms enhances reusability, reduces the tester’s work, and helps deliver the application faster.
Provides Selenium integration– Selenium suite offers multiple other tools for several needs, including Selenium WebDriver. Since it belongs to the same family, it comes pre-designed to be incorporated and adjusted with all these tools providing strong centralized software.
No server required– One of the interesting things about working with Selenium WebDriver is that it doesn’t require any server to be used for communication between components. This makes the communication part much more convenient and easy.
Utilizes fewer resources– Since Selenium WebDriver runs with minimal requirements and with simpler technologies, it requires far fewer resources than its counterparts such as QTP.
Easy to learn– It is very useful and easy to learn to write test cases for Selenium WebDriver. They use relatable English-type function meanings which are easier to understand and remember.
Parallel support– Selenium WebDriver comes with the support of parallel test execution on multiple browsers, making the testing time and overall testing phases short. Among various tools that support this feature, the Lambda test platform is one of the most popular ones. Integrating Selenium WebDriver with this platform, testers can execute tests in parallel using a cloud-based Selenium grid which allows simultaneous execution of tests across numerous browser and device combinations. This enables testers to maximize their testing capabilities and ensure high-quality applications.
Lambdatest is an AI-powered test orchestration and execution platform that enables testers to perform real-time and automation testing across more than 3000 environments and real mobile devices, resulting in higher test coverage in much shorter times. Also, it blends with popular testing frameworks and CI/CD tools, for further enhancing its capabilities for parallel testing workflows.
This platform uses a Selenium Automation Grid that allows running end-to-end automation tests on a secure, robust, and scalable Selenium infrastructure. Testers can also perform several functions like headless browser testing using Selenium, test analytics, local testing, and many more using this platform.
Selenium WebDriver Feature
Selenium WebDriver has many options and features available. Its object-oriented API is very useful when more dynamic elements need to be tested. Using this tool, developers and testers can target exact elements on the page, to increase both the speed and accuracy of the testing.
Additional features of Selenium WebDriver include:
- Broad language support– Selenium WebDriver supports various programming languages. This allows the team to use the language they know best, without additional training needed.
- Multi-browser compatibility– Selenium WebDriver allows for testing on multiple browsers to accommodate all possible users, as well as different user systems.
- Community support– Using Selenium WebDriver offers developers the support they need when they encounter problems, have questions, or need additional tools and innovation for their test.
- Easy implementation– Selenium WebDriver is easy to install and set up, so testers can implement and start using it quickly.
- Compatible with a multitude of frameworks and other testing systems- By using Selenium WebDriver testers can plug in features they want into the framework they are already using.
There are a lot of choices that are available when using Selenium WebDriver. It is a great tool to know and consider for the automated web testing needs of the tester’s applications.
Architecture of Selenium WebDriver
Selenium WebDriver API contributes to the smooth communication facility between languages and browsers.
There are four fundamental units of Selenium WebDriver Architecture:
Selenium Language Bindings / Selenium Client Libraries – Selenium developers have built language bindings/Selenium Client Libraries to support multiple languages. For example, in case testers want to use the browser driver in Java, they can use the Java bindings. All the supported language bindings are available on the official website of Selenium.
W3C protocol- The full form of W3C is the World Wide Web Consortium. It is an international group involved in developing and maintaining standards and guidelines for the World Wide Web. The main aim and goal of the W3C is to ensure the long-term growth and interoperability of the Web.
Browser Drivers- Selenium uses browser-specific drivers which enable it to establish a safe and secure connection without revealing the internal ideology of the browser’s functionality. The browser driver is also very precise to the language that is used for automation such as Java, C#, etc.
Browsers- The browsers supported are Firefox, Safari, Chrome, and more.
Use Cases of Selenium Webdriver
Some of the main uses of Selenium Webdriver in application development are:
Web application testing
Selenium Webdriver is primarily used for testing web applications. It allows testers to automate repetitive tasks such as clicking on buttons, filling out forms, and steering through pages. This saves time and lowers the risk of flaws that can happen when executing these operations manually.
Cross-browser testing
Selenium Webdriver facilitates testers to run tests on multiple browsers such as Internet Explorer, Safari, Opera, Google Chrome Firefox, And Mozilla. It assures that the application works flawlessly and systematically on all browsers. Various platforms that run cross-browser testing. One such platform is the LambdaTest. It is a leading cross-browser testing platform, allowing testers to test the website or web application across multiple browsers and operating systems.
Regression testing
Selenium WebDriver is ideal for performing regression testing. It involves re-running the tests after changes have been incorporated into the application.
Load testing
Selenium Webdriver is usually used to perform load testing. It comprises simulating heavy user traffic on the application to see how it acts under stress. This enables developers to pinpoint any performance issues and makes sure that the application is competent to handle a high degree of traffic.
Integration testing
Selenium WebDriver is used for integration testing, which involves examining how different parts of the application work in collaboration. This is crucial for ensuring that the application performs as intended and that there are no concerns with how diverse modules or components interconnect.
Continuous integration and delivery
Selenium WebDriver can be blended with constant integration and delivery tools such as Jenkins and Git to automate the testing process and make sure that the new changes are tested and installed swiftly and in an orderly manner.
Working on Selenium WebDriver
We have already discussed the feasibility of using Selenium WebDriver. Here in this section let’s summarize the working of Selenium WebDriver.
Selenium WebDriver writes an automation test script targeting a specific browser driver, and then on clicking the run button, the script is converted to the API format with data in World Wide Web format. This data is then transferred to a browser driver using W3C protocol over an HTTP network as a RESTFUL API.
The browser driver receives the data and if the validation is successful, it communicates those actions to the browser via HTTP and if the validation is rejected, the errors are informed back to the client. Once the browser kicks off, the driver executes the actions one by one, hence conducting the testing like a manual tester through automation. The commands are sent via HTTP and the response is received through the same protocol to the driver. Once all the functions are executed, the browser shuts down and the driver passes on the results to the client.
Techniques for using Selenium WebDriver
- Browser navigation commands – It uses commands to automate browser actions such as opening, closing, or maximizing the browser window.
- Exception handling – It helps to catch bugs and handle problems that arise during the execution of automation code.
- Page object model – Selenium WebDriver uses patterns to enhance test maintenance and reduce code duplication.
- Data-driven framework – Selenium WebDriver enables the differentiation of test data from the test script by storing it in an external file or database.
- Actions class – This class is used to automate mouse and keyboard events in web applications.
- SmartWait – This feature is used to ensure smoother and more reliable test runs by providing an error message if an element doesn’t meet the required conditions within a set timeframe.
Conclusion
Automation testing with Selenium WebDriver is becoming increasingly important in the application development landscape. Its capacity to substantiate web applications across various browsers, along with its flexible toolkit, magnifies its appeal to developers and QA experts. Amidst the contradiction of traditional and code-free automation, Selenium WebDriver continues to stand out as a prominent catalyst for advancing effective and reliable testing procedures.
