Recording and Replaying Navigations on AJAX Web Sites Alberto Bartoli Eric Medvet Marco Mauri DI3 Università di Trieste, Italy http://bartoli.inginf.units.it
July 2012
The Problem Rich Internet Applications (AJAX)
REPLAY
RECORD
Operator-driven
Sources not available (Third party, Live site)
Hours or Days
Automatic
…why bother ? Very useful for GUI testing Security Functional Regression … Web macros Reverse engineering
…
Key Requirement REPLAY
RECORD >
< User Action , Page Element >
Replayer
Trace
1. Identify Element 2. Execute Action
Identify Element...hhmmm… DOM@Replay may be very different from DOM@Record Dynamic content Element in different position…or no longer exists
Session-based element id Elements without id / with duplicate id
How to identify “the same” element when replaying a recorded trace ? How to make sure “that” element still exists ?
That’s why… Tools for Record & Replay have severe limitations Non AJAX Assume (implicitly) that Replay occurs immediately after the Record Assume (implicitly) that Replay is always possible
Our Contribution Transparent Record With Firefox Automated Replay On the live sites
Works with real sites of practical complexity Methodology Tool
Implementation (in a nutshell) Transparent Record Proxy injects Javascript for intercepting user events and recording them in a trace
Automated Replay Several heuristics for locating elements
It works… Realistic complexity
Google Search, Shopping, Monclick, +1 Twitter login, user search, respond to a tweet Amazon search, share, login and send by email …
Correct replay Even after several days Ability to detect when replay is no longer possible
Thanks for your attention…
http://machinelearning.inginf.units.it/
Heuristics findElementBySrc Retrieves the first element with the same tag name and src attribute value findElementByInput Same type of form input and same value for certain attributes findElementByGrid Same tag name and coordinates in a specified grid
Uniqueness of «id»
Experiments… (just one of many) Repeat every 6 hours Google login Search «SD 8 GB» Click «shopping» link Select first product Click «compare prices» Select Monclick shop Activate «+1» on product details page Deactivate «+1»
Experiments… (just another) Repeat every 6 hours Select «Book» product category on Amazon Search «Landover» Select first result Click «Share» Execute Amazon login Fill «Share» form Click «Send»
Recording and Replaying Navigations on AJAX Web ...
Navigations on AJAX Web Sites. Alberto Bartoli. Eric Medvet ... Web macros. ⡠Reverse engineering. ⡠⦠... Session-based element id. ⡠Elements without id ...
Implementing such replaying functionalities with modern web technologies ... Recording occurs automatically, i.e., the user navigates with a normal browser and.
Implementing such replaying functionalities with modern web technologies such as ..... In: Proceedings of the 20th ACM International Conference on Information.
current web document for the associated target element TE; if found, replays the event using TE as target using WebDriver. If not found, the trace replayer ...
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Agnostic AJAX: Asynchronous JavaScript and Data ... Need not use XML as data format for AJAX updates .... Calls display function to convert data to HTML table.
