December 3, 2010

How to find a bug in application? Tips and Tricks




A very good and important point. Right? If you are a software tester or a QA engineer then you must be thinking every minute to find a bug in an application. And you should be!


I think finding a blocker bug like any system crash is often rewarding! No I don’t think like that. You should try to find out the bugs that are most difficult to find and those always misleads users.


Finding such a subtle bugs is most challenging work and it gives you satisfaction of your work. Also it should be rewarded by seniors.


My point is try to find out the hidden bugs in the system that might occur for special conditions and causes strong impact on the system. You can find such a bugs with some tips and tricks.


So what are those tips:


1) Understand the whole application or module in depth before starting the testing.
2) Prepare good test cases before start to testing. I mean give stress on the functional test cases which includes major risk of the application.
3) Create a sufficient test data before tests, this data set include the test case conditions and also the database records if you are going to test DB related application.
4) Perform repeated tests with different test environment.
5) Try to find out the result pattern and then compare your results with those patterns.
6) When you think that you have completed most of the test conditions and when you think you are tired somewhat then do some monkey testing.
7) Use your previous test data pattern to analyse the current set of tests.
Try some standard test cases for which you found the bugs in some different application. Like if you are testing input text box try inserting some html tags as the inputs and see the output on display page.
9) Last and the best trick is try very hard to find the bug As if you are testing only to break the application!





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