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What is Selenium Testing?

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2023-09-13

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Selenium is a free (open source) automated testing framework used to validate web applications on a variety of browsers and platforms. You can create Selenium test scripts using multiple programming languages ​​such as Java, C #, and Python. Tests performed using the Selenium test tool are commonly referred to as Selenium tests. Selenium Software is not a single tool, but a set of software, each part of which addresses the needs of your organization’s individual Selenium QA testing.

History of Selenium

2004:


  • Selenium was created by Jason Huggins (engineer at Thought Works).
  • He developed a JavaScript library (“JavaScript Task Runner”) that could drive interactions with the page, allowing him to automatically rerun tests against multiple browsers. That library eventually became Selenium Core.
  • Challenges due to Same Origin Policy and introduction of Selenium RC by Paul Hammant( another Thought Works engineer).



2006:


  • Simon Stewart (engineer at Google) developed WebDriver that spoke directly to the browser using the native method for the browser and opening system.
  • Selenium Web Driver used the concept of native drivers to interact with the Application under test and hence eliminated the need for a proxy server that was used previously in Selenium RC.


2011:


  • Selenium 1 (i.e. Selenium IDE + Selenium RC + Selenium Grid) merged with Selenium WebDriver to make Selenium more powerful



  • Basically, Selenium and WebDriver merged to form Selenium WebDriver (Selenium 2).



2016:


  • Selenium 3 was released in October, 2016.
  • Selenium RC which was internally implementing Selenium Core’s JavaScript program libraries is now replaced with the backed Web Driver API implementation. i.e. What ever the tasks that can be performed only by Selenium RC’s JavaScript implementation, can now be performed using the backed WebDriver API implementation which is more flexible.



2018:


  • Selenium team released alpha version Selenium 4 which really got major changes and new features that were announced by Simon Stewart in August 2018 during a conference.
  • However, till date only an alpha version is available, and its stable version is yet to be rolled out.


👉What is Selenium WebDriver?

👉How do I automate in Selenium?

Following are the features of Selenium 4

  • W3C Standardization of WebDriver API
  • Improved Selenium Grid
  • Introduction of Relative Locators
  • Full page Screenshot
  • Better Observability and Traceability
  • Refreshed and rich documentation


👉Advanced Selenium Interview Questions

👉Top 50 Selenium Interview Questions for SDET

  • Selenium is a set of different tools, each with a different approach to support test automation.


  • Selenium IDE
  • Selenium RC (Selenium 1)
  • Selenium WebDriver
  • Selenium Grid


  • Selenium IDE is an extension for Firefox that allows you to record and playback tests.
  • Selenium RC provides an API(Application Programming Interface) and library for each of its supported languages such as Java, C#, PHP, Python, etc.
  • Selenium Web Driver is a collection of language specific bindings to drive a browser. It is designed for a simpler and more concise programming interface, along with addressing some limitations in the Selenium-RC API.
  • Selenium Grid is a smart proxy server that makes it easy to run tests in parallel on multiple machines. It allows you to run test cases in different machines across different platforms. It supports distributed test execution. You can also run the test cases in parallel in multiple machines.


👉Selenium Professional Training

👉Selenium with Python Certification Training

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