SELENIUM & SELENIUM COMPONENTS

SELENIUM

Selenium is software which contains some set of programs

Selenium components:

Selenium IDE:  it is set of programs + a user interface from where the user can interact with that set of programs.

 

Advantages: 

v Free software

v Easy to install

v Its main feature is record and playback

v  Scripts recorded in IDE can be converted into other language like Java, C#, Python and Ruby

v  It is not only a time saver but also an excellent way of Learning scripts syntax

v We can insert comments, commands

Disadvantages:

v Main disadvantage of IDE is that it runs only in Firefox

  Browser

v We can’t write the script manually

v Cannot upload files

v It does not directly support loops and conditions

v Reading from external files like .txt, .xls is not possible

v We can perform very limited testing

Selenium RC (remote control): it is a set of programs to perform automation testing, to interact with those programs we need to configure them in any user interface. Generally people use eclipse as it is a powerful editor for writing java programs.

Note: after selenium rc they have made selenium web driver as more powerful. Selenium web driver is providing more facilities for automation testing when compare to RC people started using web driver and slowly RC is getting deprecated.

 

Disadvantages:

v There are very limited features in RC when working with Ajax based UI elements

v  we need to start, stop the server manually

v  Controlling multiple windows is somewhat difficult

Selenium web driver: it is a set of powerful programs to perform automation testing, to interact with those programs we need to configure them in any user interface.

       Generally people use eclipse for configuring the web driver programs into eclipse

Eclipse is a powerful editor for writing the java programs.

Advantages;

1)  Support for iPhone and Android testing

2)  Implementation of listeners - a much awaited feature

3)   Better features for Ajax testing.

4)  You can easily simulate clicking on front and back button of browser.

5)  You can extract objects in bulk like QTP. For ex - extract all links of page. With RC this was a big hastle

6)  Unlike RC you don’t have to start a server in web driver.

7)  You can simulate movement of a mouse using selenium.

8)  ) Tabs and pops are more or less the same. RC can also handle and Web driver can also handle.

9)  You can find coordinates of any object using Web driver.

10)              You have classes in Web driver which help you to simulate key press events of keyboard.

11)              Keyword driven framework is very easy to build in web driver.

Selenium grid:  it is a set of programs used for executing the tests parallel on multiple machines in order to increase the performance of execution.

SELENIUM GRID Advantages

v Remote Execution of the selenium tests can be done using Selenium Grid without actually copying your test code to remote system.

v Selenium Grid can be used to save time by executing

        Independent test cases in parallel.

v Load Testing can be done if we register a lot of remote control to a single hub and execute test case in parallel to simulate multiple transactions at a single time period.