Often testers have that one common question in their mind : Why do software testers need programming Knowledge?
My career started as a software developer and then later I switched directions to become a tester. So I am usually asked about how important it is for testers to be able to code. So here is my answer.
And the answer is yes. Testing needs the same effort which is used for developing a mobile or web application. One needs a clear idea about why, what and how the application is made to test and validate effectively.
Well testing is not just about reporting issues based on few test cases, it is also about building a quality product, which complies with business requirements which is bug free.
Knowledge goes a long way behind the scenes
To ensure a quality product you need to understand the project well, regarding how it is built and what is its aim to achieve. By this way it helps to frame the right test cases and test ideas to expose vulnerabilities.
For example, if you are able to recognize the algorithms a developer has used to bring up something at the UI layer, instead of wasting time by trying out various combinations at the UI layer you can test it at the algorithm layer itself. In that way you can cover more in less time and can beat the work pressure characteristics of this job.
You can predict the impact of a new feature or bug fix by understanding the project at the architecture level itself. You can cover the impact areas as well by easily framing your test cases.
Be a tester who can prescribe
A tester is just like a doctor, analyzing the patient(project) in order to assess its health. Only a good tester can make the right diagnosis and prescribe the right remedial measures.
To assess a patient's health a doctor needs to analyze him completely similarly a tester needs to analyze the project completely to find the bugs and issues. A good tester can make the right diagnosis and can also prescribe the right remedial measures in an effective way. But in order to suggest those remedies, in the first place you need to know what caused the problem. This requires an understanding of the basic working and functionality of the software. This is the time the testers combined skill sets will pay off by intersectioning between programming and testing.
Speak developers’ language
In Order to get a proper result, communication with developers needs to be precise and clear. I find it easy to present issues and bugs to developers in a language they speak and understand since I was a developer before. I could answer clearly to the developers for the questions like why the bug occurred and what is its priority etc.
Have some fun along the way
You will love finding out how beautifully the application is working in multiple scenarios with many users interacting with it at the same time when you know the backend behavior of a software system.
I’m able to forecast the failure conditions upfront by being able to predict defects before the execution phase. The pleasure of testing comes when you explore deeper.
Last but not the least…
Whatever you do enjoy it. Pleasure in the job puts perfection in the work. It will always bring the best result when you love what you do. I don't mind if I am a developer or not, I really enjoy testing.