Introduction to Selenium

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Selenium is a free (open source) automated testing suite for web applications across different browsers and platforms.

Different languages support by selenium
  1. Java
  2. PHP
  3. Perl
  4. Python
  5. C#
  6. ObjectC
  7. Ruby
  8. Javascript
Selenium Versions
  1. Selenium IDE (IntegratedDevelopmentEnvironment)
  2. Selenium RC (RemoteControl)
  3. Selenium Webdriver
Latest version is Selenium Webdriver

Selenium IDE
  •  Implemented by shinya from JAPAN
  •  Released in 2006
  •  Functional Automation tool supports only webapplications
  • It is UI based and record/playback tool
  • It is implemented plugin or add-on for the firefox browser
  • Supports only firefox browser
Selenium RC
  • Implemented by jsonhuggins from thoughtwork company
  • Released in 2004
  • First automation open-source tool in the market
  • It is Collections of javascript's.
  • It's not a UI based, it doen't contain record/playback feature
  • It Supports all browser and platform's

Selenium Webdriver
  • Implemented by JSON & Stewart from google
  • Released in 2008
  • Webdriver is collection of core java classes

Definition : It is free and open source web application automation tool , which performs the action by calling the native methods of the browser

It is free
  We can use selenium for commercial purpose with out purchasing the license 

Open Source
   We can download and customize the source code

Web application
     Using selenium we can test only web application such as GMAIL, FACEBOOK. We cannot                     automate client server or desktop applications .

Automation tool
     It is software used to test the applications automatically. 

Native methods
To perform the user interaction on the browser such as typing, clicking etc.. Selenium will not move the mouse pointer or the keyboard or it's not physically press the keys present in the keyboard. It will perform the actions by calling the native methods(methods which are developed by browser) of the respective browser.




SearchContext is a supermost interface which is extend by webdriver interface

All the abstract methods of both the interfaces are implemented in Remote Webdriver class

All these methods are inherited by respective browser classes Such as FirefoxDriver, ChromeDriver, SafariDriver, IEDriver... etc

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