Vicious Circle

Software Product is a bunch of functionality assembled together and tied within the boundary of business rules. Each line of code which is written to implement a functionality has a potential bug in them. And each valid bug raised requires a change in the code written.
Are these forming a vicious circle ? Let me explain.
In a typical agile methodology, we write the Unit Tests first and then the actual functionality. So that means we actually know how the system would be tested (to some extent). But after writing the functionality, the developer calls a fellow tester to do a Dev Box Testing. Dev Box Testing is generally done on a developer’s machine with a very minimal set of test data (Thanks to developers laziness ! :)). It’s done to ensure that the intended functionality is properly developed and there are no major bugs. It also gives developer the chance to debug the application in case of any exception (if encountered). So till now we have done Unit Testing and Dev Box Testing. What next? Post the developer check in, the application is generally deployed in a Test Environment for a further round of testing. This testing is intensive and is iterated over a large set of sampled data. This kind of full fledged testing often results in uncovering of many bugs.
So we are still left with bugs even after Unit Testing –> Dev Box Testing. So if we see the whole process process,
We write code –> We induce bug –> We find bug -> We write code to fix bug –> We induce bug –> …
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Comments

  1. Ragesh G RJuly 29, 2010

    ya dude, well that's why we have regression in the 1st place.

    ReplyDelete
  2. Nishant VermaJuly 30, 2010

    That's why regression is so crucial in agile testing!

    ReplyDelete
  3. Dhanasekar SAugust 01, 2010

    Regression is crucial not only in agile,it is crucial in any development model you follow.
    --Dhanasekar S

    ReplyDelete

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