WORKING WITH SELENIUM
SELENIUM
Selenium is the open source tool for functional and
regression testing
Having 4 Parts
n Selenium
IDE
It’s a java script framework.
It is installed as add-on on Mozilla
It is used to record user steps
on application.
n Selenium
RC
It is mainly used to run test
suites on multiple browser.
n Selenium
GRID
use to execute test cases on
Multiple Browsers/Multiple systems in parallel.
n WebDriver
New enhancement in selenium,
added with selenium 2.0
alternate of selenium RC,
provide fast execution of test cases.
Commands used in selenium are called Selenese
ADVANTAGE OF
SELENIUM
è
Open Source Tool, so no license fees.
è
Support large number of programming language for
scripting.
è
Support large number of browsers.
è
With Selenium Grid, we can execute in parallel,
ultimately fast execution.
DISADVANTAGE OF
SELENIUM
è
Support only Web based applications.
è
Its Free, so no support is available.
è
No Rich GUI / Lot of programming skills are
required.
è
Does not support FLASH, Silverlight etc
PARTS OF SELENIUM
========================================================================
SELENIUM IDE SELENIUM RC SELENIUM GRID Webdriver
à
RC Server à Selenium Hub ànew enhance
à
Selenium Core à
Selenium RC
à
Client Libraries
SELENIUM RC(Remote Control) Components
à RC Server
à Selenium Core
à Client Libraries
The RC Selenium Server
à
launches and kills browsers
à
interprets and runs the Selenese commands
passed from the test program
à
acts as
an HTTP proxy, intercepting and verifying HTTP messages passed between
the browser and the AUT.
à
Return result of selenium command back to test
program.
à
Selenium server is bundled with selenium core, automatically inject
this selenium core to browser when start browser.
Selenium-Core
is a JavaScript program, actually a set of
JavaScript functions which interprets and
executes Selenese commands
using the browser’s built-in JavaScript interpreter.
Client libraries
which provide the
interface between each programming language and the Selenium RC Server.
Client libraries provide support of different
language to selenium
The diagram shows the client
libraries communicate with the Server passing each Selenium command for execution. Then the server passes the Selenium
command to the browser using Selenium-Core
JavaScript commands. The browser, using its JavaScript interpreter, executes the Selenium command. This runs
the Selenese action or verification you specified in your test script.
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