Basics of Selenium

1
Selenium Basics

• iTeLearn

2
Selenium Overview

• Selenium is a test automaton tool, the most
  widely used tool for testing web based
  applications. It is a free and open source tool.
  Hence, the testing cost is reduced considerably.
  At the same time it is faster in executing the
  tests than many licensed tools such as QTP / UFT.
  Selenium has many other features which made it
  the most popular test automation tool in the
  world.

3
Demand For Selenium

• When the demand for selenium increased, many
  selenium testing tutorials have come up across
  the globe. This helped many people to take up
  selenium jobs, for which there is a great demand.
  Online Selenium testing tutorials gained more
  acceptance as it allows working professionals
  working in other domains wish to shift to
  selenium jobs, to learn the subject without
  quitting their present job.

4
Selenium Components

• Selenium IDE
• Selenium IDE or Integrated Development
  Environment is implemented as Firefox add on and
  it permits recording, editing and debugging of
  tests. Scripts are recorded automatically and it
  will be recorded in Selenese, a special scripting
  language for Selenium.

5
Selenium Client API

• Selenium API is the component that makes selenium
  compatible with multiple programming languages.
  The tests can be written in any programming
  language and these tests will communicate with
  Selenium using calling methods in Selenium Client
  API

6
Selenium Remote Control

• Selenium Rc is a server that receives commands
  for the browser.

7
Selenium Webdriver

• Selenium WebDriver replaced Selenium RC in the
  latest version. It receives commands in selenese
  or in any other language supported by Selenium
  through Selenium client API and sends them to the
  browser. Unlike in the case of RC, webdriver does
  not need a server to communicate with the browser
  but will communicate directly with the browsers.

8
Selenium Grid

• Selenium grid is a server that allows multiple
  tests to run simultaneously in different machines
  or in different browsers. With selenium grid, one
  machine will act as a hub which will be connected
  to different nodes in different machines. The
  tests will contact the hub to get access to
  different nodes to run the test.

9
Advantages of Selenium

• Selenium is free and open source and hence the
  testing cost can be reduced considerably which
  will help to reduce the price of the final
  product which is an added advantage in this
  highly competitive market.
• As it is compatible with multiple operating
  systems and browsers, people who are comfortable
  in with different OS and browsers can work with
  selenium.
• Selenium Supports multiple programming languages
  and hence one does not need to learn any specific
  programming language.
• Selenium is highly user friendly and easy to
  learn.