Selenium Introduction

Selenium IDE 

IDE Integrated development Environment; Selenium IDE is a add on plugin which can only used in FireFox. User can record the actions and can edit and debug the tests. It can be used to identify IDs, name and XPath of objects. Only one test at a time.

Selenium Core (CORE) 

Selenium Core is the original Javascript-based testing system. This technique should work with any JavaScript enabled browser. It is the engine of both, Selenium IDE and Selenium RC (driven mode), but it also can be deployed on the desired application server. It is used specifically for the acceptance testing.

User can record the tests using Selenium IDE and can use the same tests to run in other browsers with minimal modifications. It provides support to run the tests in HTA (HTML Applications) Mode. This mode works only in IE.

Selenium Remote Control (RC) 

Selenium Remote Control is a test tool that allows user to write automated web application UI tests in few programming languages against any HTTP website using any mainstream JavaScript-enabled browser. User can write the tests (More expressive programming language than the Selenese HTML table format) in Java, DotNet, Perl, Ruby and PHP. Also it supports few testing frameworks.

Selenium Grid 

Selenium Grid allows easily to run multiple tests in parallel, on multiple machines, in an

heterogeneous environment by cutting down the time required for test execution. Using this, user can run multiple instances of Selenium Remote Control in parallel.

Supported browsers 
Selenium tools can run in following browsers.

• Internet Explorer
• FireFox
• Opera
• Safari
• Seamonkey

Supported Operating Systems 
Users can execute the selenium tests in following OS.

• Windows
• Linux
• Solaris
• OS X

Supported Programming languages 
Below languages are supported by Selenium RC.

• C# (DotNet)
• Java
• Perl
• Ruby
• Python
• PHP