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Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
Scripting Recipes for Testers
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Scripting Recipes for Testers

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Here are the slides from my tutorial on Scripting Recipes for Testers. In it I share a number of reusable scripts and some tips I learned writing them to help testers do their job better. …

Here are the slides from my tutorial on Scripting Recipes for Testers. In it I share a number of reusable scripts and some tips I learned writing them to help testers do their job better.

The scripts themselves can be found on my site (http://adam.goucher.ca) under the category 'GLSEC2008'

Published in: Technology
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Transcript

  • 1. Script Recipes for Testers Adam Goucher Manager of Quality, Zerofootprint Software adam@goucher.ca http://adam.goucher.ca
  • 2. About Me • Testing for 10 years • Tool-smithing for most of them • Scripting has been and important part of both my career and testing success
  • 3. About You • Want to be a better tester • Who to find better bugs • More efficiently
  • 4. About This Tutorial • Reusable scripts explained • Tips for your own scripts
  • 5. So Why Script? • Provide new insight into your product • Generate test data • Automate repetitive / common / complex tasks • Replace expensive tools with ones tailored to your environment
  • 6. Language Choice • Is far too often a religious choice • Use what is right for the task
  • 7. Language Choice • Do you know the language? • Could you learn it? • Is it supported on all your (current) platforms? • Are those platforms all considered first-class citizens? • Can it interact with your database?
  • 8. Language Choice • Does it control your other tools? (Selenium, Watir, etc.) • Can you recycle code (Java jars or .NET assemblies) from elsewhere in your application? • Does it support Unicode as a core data type? • Is there seamless interaction with the operating system? • Is there an active member community (to whom you can turn to for help)
  • 9. Language Choice
  • 10. Developer Notes • hack, broken, kludge are not things I like seeing in code I am testing • fixme and todo in comments imply hidden knowledge • style
  • 11. A better grep • grep is a unix tool for searching for things inside files • The ‘developer notes’ script is like a cross- platform grep
  • 12. How to run • Set the source_base to point to the root of your project source code • Set the interesting value to the types of file you want to check • Add items you want to check to the notes list; all lowercase
  • 13. Future Changes • Faster • Use regex
  • 14. Tip: Complexity • If you don’t have to do something in a complicated way, don’t.
  • 15. Tip: Common Case • Converting both sides of a comparison to a common case means you don’t have to worry about case
  • 16. Tip: Performance • Unless performance really matters, don’t worry about it • Optimizations add complexity
  • 17. LOUD • i18n and l10n are hard things to get right • But is pretty easy to test • Since we (the testers) are not responsible for content; the translators are
  • 18. LOUD • The ‘loud’ screen alters the text which is shown on the screen - ^LOUD$ • Everything that should be translated should be UPPERCASED • Everything that shouldn’t be is not • Blocks of text should not be split into different LOUDed strings
  • 19. How to run • This script needs to be customized for your organization’s method of creating resource bundles
  • 20. Tip: Use fake ‘files’ • Rather than using your real resource bundle to build the script, use a variable that looks like a file • It is faster, and you cannot accidently delete your master copy while on the train without an internet connection
  • 21. Audible Log Monitoring • Log files provide a wealth of information • If your eyes are on a log while doing a test they cannot be somewhere else • Use your ears instead
  • 22. How to run • in watchlist.txt, create a list of strings or regexes which it needs to watch for • and the wav file it will play when it finds it
  • 23. Tip: Package for Convenience • Some people are scared of anything that looks like ‘code’ • More often than not these are ones who are not ‘unix people’ • A tool is only useful if it is used • All scripting languages have the ability to compile themselves into .exe
  • 24. Tail’ing the Event Log • Another tool I miss on windows is tail • When on remote unix machines I am constantly tailing logs • ‘Proper’ windows applications however log to the Event Viewer which cannot be tailed (even if you have a windows version installed)
  • 25. How to run • Once you have installed the Python Win32 Extensions, just run the script
  • 26. Future Changes • Merge with Audible Log Monitoring
  • 27. Tip: Platform neutrality • Platform neutrality is a noble goal • But the goal should be abandoned if the situation makes sense
  • 28. Browser Percents • When testing web applications, one of the key decisions to make is how much to test with what browser • Aggregate 3rd party information, or • Information from your actual webserver?
  • 29. How to run • I only run this script every so often so the filename is in the script • The regex in the script is written for the Apache access log format • If you are using a different webserver you just have to change the regex
  • 30. Tip: Reinvent the wheel • There are a tonne of libraries and tools which parse log files • Reinvent the wheel if • you can learn something • you want specific information and don’t need anything else
  • 31. Tip: Filter the data • Your access log is going to be littered with your own office; filter it out to get a real information
  • 32. Algorithmic Oracles • Oracles can be people, specifications (like an RFC) or a comparable product • Or if something is an algorithm it can be an alternative implication • In something like a script
  • 33. How to Use • Implement your algorithm as a verification task • Run what your developers produce through the script • Warning: If you implement it wrong, then you will could be ignoring bugs or creating red herring ones
  • 34. Test Case Generation • This is the opposite of the Oracle script • One of the main reasons I create test data ahead of time is to not have to think under pressure • Script that thinking
  • 35. How to Use • Just implement the algorithm • Warning: If you implement it wrong and you will be using bad data
  • 36. Tip: Random • Real world data is random • Create your test data the same way • The infamous Pesticide Paradox
  • 37. Tip: Dual Purpose • I put the oracle and generation scripts for the same algorithm in the same script
  • 38. Excel manipulation • Excel is a really convenient tool for data creation • It is also really powerful and comes with its own scripting language
  • 39. Tip: Layers • If something has a native scripting layer, use it
  • 40. GUI Automation • Commercial GUI automation tools are budget killers • For a number of application types the open- source alternatives are just as effective • You just need to fall back on manual scripting sooner
  • 41. GUI Automation • Here are the 4 steps I use when automating a UI 1. Record the test 2. Add the testing conditions 3. Traditional data driving 4. Give the script smarts • 2 - 4 tend to require scripting
  • 42. Metaframeworks • Metaframeworks are frameworks which run different test frameworks and aggregates the results
  • 43. Meta why? • Imagine from one command getting the results of your JUnit, Selenium, homebrew and Watir at once? • This is a big bit of scripting...
  • 44. Tip: Language Variants • A lot of the major scripting languages have been ported to other interpreters • Java: Jython, JRuby • .NET: IronPython, IronRuby
  • 45. Go Forth and Script!

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