Selenium Architecture

Brief overview of the architecture of the Selenium Web Testing automation tool

1. Selenium Architecture
An overview
Rohit Nayak
Talentica Software

2. Considerations
•What is being tested? Functionality, UI?
•Performance
•Cost
•Skills of testers
•Support

3. Popular Tools
•Selenium
•SilkTest, QTP
•WebTest, HTMLUnit
•Grinder
•Watir, OpenSTA,
•Sahi , Badboy
•Twill, mechanize, webunit

4. Core Requirements
•Browse urls
•Render web pages
•Mimic User Actions
•Validate results
•Ajax/CSS support

5. Pragmatic Requirements
•Language choices
•Platforms (Browser/OS)
•JS toolkit support
•Distributed tests
•Scheduled execution
•Reporting
•Configurability
•Build Integration
•Test Creation Environment

6. Javascript: same origin policy
•DOM read access
•Ability to select elements, fire events
•Browser dependence
Approaches:
•Proxy
•Privileged mode