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Os Alrubaie
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Os Alrubaie Presentation Transcript

  • 1. Debugging and Testing the Web Tier Muness Alrubaie muness@gmail.com muness.blogspot.com ThoughtWorks www.thoughtworks.com
  • 2. ? Ask!
  • 3. What are we going to talk about?
  • 4. C:Program FilesMozillafirefox.exe -profilemanager /Applications/Firefox.app/Contents/MacOS/firefox -profilemanager /usr/local/mozilla/bin/firefox -profilemanager .../firefox -P <profile>
  • 5. What you want in a test environment • Isolated • Customized • Manageable • Shared
  • 6. Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. Brian Kernighan
  • 7. Web Developer Toolbar • CSS • Browser features • Outline elements • Manage cookies • Validate
  • 8. Don’t Panic
  • 9. Firebug • Debugger • Profiler
  • 10. alert('width: ' + width + ' height: ' + height); console.log('width: %d height: %d', width, height);
  • 11. console.debug('I am debug'); console.info('I am info'); console.warn('I am a warning'); console.error('I am an error');
  • 12. Inline Debugging • debugger keyword • All the usual capabilities • Step Over • Step Into • Step Out
  • 13. What else?
  • 14. What about Internet Explorer?
  • 15. We know about as much about software quality problems as they knew about the Black Plague in the 1600s. We've seen the victims' agonies and helped burn the corpses. We don't know what causes it; we don't really know if there is only one disease. We just suffer -- and keep pouring our sewage into our water supply. Tom Van Vleck
  • 16. JsUnit • Unit testing • xUnit for Javascript
  • 17. Concepts • Test Functions • Test Page • include jsUnitCore.js • setUp and tearDown • Test Suite • testRunner.html
  • 18. Tracing • A way to view output • There are 3 trace levels • Configurable per test run
  • 19. Automate your tests • net.jsunit.StandaloneTest • Browsers • Test Pages • JsUnitServer • net.jsunit.DistributedTest
  • 20. One test is worth a thousand opinions.
  • 21. Crosscheck • Unit testing • Simulator • Fast!
  • 22. What does it provide? • global variables • functions • document
  • 23. Optimism is an occupational hazard of programming: feedback is the treatment. Kent Beck
  • 24. Selenium • Acceptance testing • Standard browser technology • Simulates the user • Java, Ruby, Perl, Python, .Net, Oh my!
  • 25. ? session evaluations Muness Alrubaie muness@gmail.com muness.blogspot.com This work is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 2.5 License. http://creativecommons.org/licenses/by-nc-sa/2.5/