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Testing Your Own Code

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by , 01-21-2013 at 11:15 PM (901 Views)
Testing your own code

This is an interesting debate. What are the results when you decide to test your own code? Will there be happy endings? The person who develops a code generally sees only happy paths due the basic human instinct where we do not want to see the negative aspects of our work and donít really opt to go into much details in order to see where something can go wrong in our work.

The main concern of developer testing is Ė the possibility of not understanding the requirements. This task can fall to the customer if there is no second opinion, as in from a peer review or internal testing). If the requirements are misunderstood by a developer, then no matter how well the developers test the application, they will never find the error.

What Optimistic developers think:

I wrote the code very carefully and I am confident it is working properly. Therefore, there is no need to test this or any other path, as I know itís working great. The problem with this line of thinking is there is a greater probability of missing errors when this mentality is being adopted.

The Developer vs The Tester

As a software developer, you always want to see your code working perfectly. So you will exhaustively test it to be sure itís working correctly. But do you know how the tester will test the application? The testerís job is to make it fail in any way and to find out in which ways the application might not work correctly. This is the main difference in a developerís and a testerís approach to testing code.

Should developers test their own work?

I personally donít mind if developers test their own code.

After all itís their baby and they know their code better than anyone else. They know the traps in their codes, where it can fail, where they need to concentrate more closely, and the critical path of the application. Keeping all this in mind, the developers must do the unit testing themselves.

This all goes better with a developer who likes to be a critic for their own code! But most of the developers Iíve worked with consider testing a painful job. Even they know the system well, , they tend to skip many of the validation paths because they donít give their code a comprehensive look during code review. If the developers find any errors in their code, it is comparatively easier to fix at that point.

It is the testerís primary responsibility to make sure each and every path is tested properly. Testers should ideally give importance to all possible details to verify that the system is not breaking anywhere. I suggest that developers to do proper review of their code before pushing it to QA for their verification. This helps in not wasting time on all basics during the system testing phase.

Conclusion

For success of any software project, there should be an independent testing team validating all aspects of your applications.
vinodfg and DevendraSingh like this.
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  1. DevendraSingh's Avatar
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    Very imformative !!! Thanks for sharing your views.

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