Selenium Testing Training In Indirapuram

About Selenium

It is a software-testing framework for web applications. The Selenium provides a playback (formerly also recording) tool for authoring tests without the need to learn a test scripting language.It also provides a test domain-specific language to the write tests in a number of  programming languages, including C#, Groovy, Java, Perl, PHP, Python, Ruby and Scala. The tests can then run against most modern web browsers. Selenium testing deploys on Windows, Linux, and OS X platforms. It is open-source software, released under the Apache 2.0 license: web developers can download and use it without charge.Companies can run mission-critical workloads or sensitive applications on the private selenium while using the public selenium testing or burst workloads that must scale on-demand. Selenium institute in indirapuram , Delhi.
History of selenium
The Selenium was originally developed by Jason Huggins in 2004 as an internal tool at ThoughtWorks. It  was later joined by other programmers and testers at ThoughtWorks, before Paul Hammant joined the team and steered the development of the second mode of operation that would later become "Selenium Remote Control" . The tool was open sourced that year.
In the 2005, the  Dan Fabulich and Nelson Sproul made an offer to accept a series of patches that would transform Selenium-RC into what it became best known for. In the same meeting in selenium, the steering of Selenium as a project would continue as a committee, with Huggins and Hammant being the Thought Works representatives.
In 2007, Huggins joined Google. Together with others like Jennifer Bevan, he continued with the development and stabilization of Selenium RC.the same time, Simon Stewart at ThoughtWorks developed a superior browser automation tool called WebDriver. In the way, 2009, after a meeting between the developers at the Google Test Automation Conference, it was decided to merge the two projects, and call the new project Selenium WebDriver  for Selenium 2.0.




Components of selenium testing
There are some components of selenium.

Selenium IDE

Selenium IDE(Integrated Development Environment) is a complete integrated development environment  (IDE) for Selenium tests. It is implemented as a Firefox Add On, and allows recording with a software, editing, and debugging tests. It was previously known as Selenium Recorder. It was originally created by Shinya Kasatani and donated to the Selenium project in 2006. It is little-maintained and is compatible with Selenium RC, which was deprecated.

Selenium client API

The second component of  selenium, As an alternative to writing tests in Selenese, tests can also be written in various programming languages. These tests then communicate with Selenium by calling methods in the Selenium Client API and selenium testing,. Selenium currently provides client APIs for Java, C#, Ruby, JavaScript and Python.

Selenium Remote Control

Selenium Remote Control (RC)is the component of selenium testing. It  is a server, written in Java, that accepts commands for the browser via HTTP. Selenium Remote Control makes it possible to write automated tests for a web application in any programming language, which allows for better integration of Selenium in existing unit test frameworks. To make writing tests easier, Selenium project currently provides client drivers for PHP, Python, Ruby, .NET, Perl and Java. The Java driver can also be used with JavaScript . And the instance of selenium RC server is needed to launch html test case - which means that the port should be different for each parallel run.

Selenium Grid

It is last thing of selenium components. Selenium Grid is a server that allows tests to use web browser instances running on remote machines. With Selenium Grid, one server acts as the hub. Tests contact the hub to obtain access to browser instances. The hub has a list of servers that provide access to browser instances, and lets tests use these instances. In this way, section Selenium Grid allow to running tests in parallel on multiple machines, and to manage different browser versions and browser configurations centrally.
Advantages
The first advantage is Selenium is a suite of tools that helps in automating only web applications. Selenium IDE software a Firefox plugin that lets testers to record their actions as they follow the workflow that they need to test.Selenium WebDriver-is the successor to Selenium RC which sends commands directly to the browser and retrieves results.
Disadvantages
  • supports only web based applications.
  • No IDE, so the script development won't be fast
  • Cannot access controls within the browser.
  • No default test report generation.


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