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Stable and reliable Web Automation. - Narayan Raman. The Goal. Reduce testing effort Automate things that can be automated Tests should be Repeatable (Reliable) Maintainable Fast. Web Technologies. AJAX Web 2.0 Highly dynamic applications Lots of frameworks Newer, powerful browsers - PowerPoint PPT Presentation
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Reduce testing effort Automate things that can be automated
Tests should be◦ Repeatable (Reliable)◦ Maintainable◦ Fast
Present methods◦ Id, name◦ Xpath◦ Css-selector
Xpath and Css-selectors are brittle◦ Too dependent on programmatic structure◦ Require programmatic knowledge
Business logic changes less than code Business drives User Interface
UI Relations◦_image(“plus.gif”, _near(_div(“My Documents”)))◦_textbox(0, _near(_label("Loan Amount")))◦_cell(0, _near(“Ram”), _under(“Loan Amount”))
More stable
Waits needed for◦ Page loads◦ Frame/iframe loads◦ AJAX request completion◦ Javascript timeout triggers
Hard coded waits◦ Wasteful
Conditional waits◦ Complicated
Tool should handle time outs automatically
Easy to create scripts◦ Good recorders on all browsers◦ Object Spy
Easy to debug scripts◦ Real time debugging to examine state of web page◦ Good reporting
Work across browsers and operating systems
Execute tests in parallel◦ Some Browsers allow separation of cookies across
instances Spread tests across machines Limit hard coded waits Use fast accessors
◦ Xpaths are very slow on IE
http://sahi.co.in
Open source toolSahi Pro – Commercial offering
Tester friendlyLight weight and scalable