Selenium

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SELENIUM

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WHAT IS SELENIUM

• Selenium is a portable framework for testing web
  applications. Selenium provides a playback
  (formerly also recording) tool for
  authoring functional tests without the need to
  learn a test scripting language (Selenium IDE).
• Selenium was originally developed by Jason
  Huggins in 2004 as an internal tool at Thought
  works. Huggins was later joined by other
  programmers and testers at Thought Works, before
  Paul Hammant joined the team and steered the
  development of the second mode of operation that
  would later become "Selenium Remote Control"
  (RC). The tool was open sourced that year.

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FEATURES OF SELENIUM

• Selenium is a functional automation tool for web
  applications.
• It is a open source tool.
• Selenium support the languages like HTML, Java,
  php, phython, Ruby, C.
• It Supports the operating systrems like Windows,
  Linux, MAC.
• It is very flexible when compared to the QTP and
  other functional tools, because it supports
  multiple language

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COMPONENTS OF SELENIUM

• Selenium IDE
• Selenium Remote control
• Selenium Grid

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SELENIUM IDE

• The Selenium IDE (Integrated Development
  Environment) is the simplest Selenium Suite tool.
  It is a Firefox add-on that creates tests very
  quickly through its recording and playback
  functionality. This feature is similar to that of
  QTP. It is easy to install and easy to learn.
• Due to its simplicity, the Selenium IDE should be
  used only as a prototyping tool, not as a general
  solution for the development and maintenance of
  complex test sets.

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SELENIUM REMOTE CONTROL

• Selenium Remote Control (RC) is a test tool that
  allows to analyze automated UI tests of the web
  application in any programming language on any
  HTTP website through any browser compatible with
  conventional JavaScript.
• Selenium RC comes in two parts.
• A server that automatically starts and kills
  browsers and acts as an HTTP proxy for web
  requests from them.
• Client libraries for your favorite team language.

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SELENIUM GRID

• Selenium-Grid allows you to run your tests on
  different machines in different browsers in
  parallel. That is, running several tests at the
  same time on different machines running different
  browsers and operating systems. Essentially, the
  Selenium-Grid support distributed the execution
  of the test. Allows you to run your tests in a
  distributed test execution environment.
• To preserve the runtime integrity of a grid with
  selenium servers, there are two other timeout
  values that can be defined. On the hub, setting
  the command-line option -timeout to "30" seconds
  will ensure that all resources are recovered 30
  seconds after a client crashes.

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