Achieving good quality code
Printed From: One Stop Testing
Category: Quality Assurance @ OneStopTesting
Forum Name: Quality Methodologies / Streams @ OneStopTesting
Forum Discription: Any Good Testing Engineer must know about All the Quality Certifications & Methodologies like ISO, IEEE, CMM, PCCM, CMMMi, XP, Agile and many more.
URL: http://forum.onestoptesting.com/forum_posts.asp?TID=348
Printed Date: 29Dec2024 at 2:00am
Topic: Achieving good quality code
Posted By: vidhya
Subject: Achieving good quality code
Date Posted: 28Mar2007 at 4:08am
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How we achieve this: 1. The two major tools we have to make sure the code works are testing and code reviews. So, the code help you to review it and to test it. How to do it is a topic for a much longer discussion, but to help you review it it should be readable, with as simple logic as possible, with comments where they should be and have many other charactertics. How to write a code to help you test it might me even more complicated. One, very useful tool to do it is to plan some of the tests in advance (before or during the writing of the code). Then during the writing of the code, you should look at your plan and always think "how can I test it as easily as possible". Sometimes the answer to this question will affect the code. Writing the code to be testing and code-review friendly is not enough. You should actually have it tested and reviewed, fix the important code-review issues and testing issues and only then the code can be defined as "working" in it's context (if you're writing a single component it will be working as a stand-alone part but not necessarily will work as part of the big system). 2. To make the code easily changable there are many techniques. The factors include the quality of the design and the coding. Some of the techniques are separating abstraction from implementation, setting clear and well-defined responsibilities, putting as much as possible into the data rather than into the code and much much much more. This too is a very complex skill. To make sure that the code works after you've changed him, the most common technique is to create automated and wasy to run tests. Thus, you can run the tests on the changed code (and to update them according to the changes) and make sure that all the tests still pass. What is important is to make the tests as non-fragile as possible (which is also bery hard), so that not every little change will cause many of them to fail (not becuase of a bug, but because some assumption of the tests has changed). As for reviews - if the change is not very big, it is recommended to review the "delta" or differences from the previous reviewed version only. If there were many small changes over some period of time, it is also recommended to do a complete review once in a while. I know that it helps very little, but it is the basics of "good code". ------------- MBA Examination papers 
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