Testing Web Apps With Scripting Languages Mark Rees

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Testing Web Applications with Scripting Languages

Mark Rees Century Software

twill 

Simple language for web browsing



Stress tester



Web site tester



http://code.google.com/p/twill

twill-sh 

Interactive shell −



Scripted browsing −



twill-sh twill-sh -u http://localhost:8087

Record twill scripts with scotch

twill-fork 

Scripted stress testing −

twill-fork -n 100 -p 5 test-wiki.twill

twill - unit testing 

twill-sh process directory of tests



twill master run script



Python unit test framework

twill – other features 

Supports authentication



Debug helpers



Extended with user defined commands



Handles “bad” html



“in-process” wsgi support

twill – the cons 

Advanced usage requires python skills



It knows nothing about javascript

selenium 

Test web apps from within the browser



Linux, Mac OS X, Windows −



ie6+, firefox 0.8-3.0, mozilla 1.6+, safari, opera 8+, chrome

http://www.openqa.org/selenium

Selenium Core 

Uses javascript & iframes to embed test engine



Core must be installed on webserver under test

Selenium IDE 

Firefox extension



Gets round core limitations



Saves tests as −

html or ruby ide scripts



Selenium RC run scripts in 

Java, C#, Perl, PHP, Python, Ruby

Selenium Remote Control 

Allows auto web ui testing with any language



2 components −

Selenium server, written in java



Drivers for languages including python and ruby

Selenium: how it works

Other options 

Watir http://www.openqa.org/watir



Watij http://www.openqa.org/watij



Floyd http://www.openqa.org/floya



HttpUnit http://httpunit.sf.net



Sahi http://sahi.co.in/w/



WebDriver http://code.google.com/p/webdriver

WebDriver 

One day will be part of selenium 2.0



Drives the browser using best native method



Java & Python bindings

Questions

code:test-rst2html.twill go http://localhost:8081/rst2html formvalue 1 text hello submit find "hello" back follow "Home"

code:test-rst2html-debug.twill debug http 1 go http://localhost:8081/rst2html formvalue 1 text hello submit find "hello" back follow "Home"

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