In the process of application creation always appear some defects or bugs that can result in very different consequences depending on the stage when they actually appeared. Usually, any application lifecycle is following the next plan: requirements, architecture or design, development, software testing and release. In the requirement or planning stage some crucial points can be omitted and a bug is introduced as a result it can lead to its emergence during the whole project. If a defect appears in the design stage, it can mean that the software will not be functional at all.
Most quantity of bugs appear in the development stage no matter how professional and qualified the developer is. With the further project progression new defects continue appearing and are called regression bugs. With every step it becomes more and more challengeable to progress with the project, at the same time to fix existing bugs, report the new ones and ensure that they do not interfere the current functionality.
Another relevant point is the amount of people working on the project. With the project progression more and more specialists are included and it becomes more difficult to keep up with the original architecture, manage with cumbersome code and finding bugs in it. That is why it is so important to share information between the team members.
Every professional no matter what position he occupies, whether he is a developer, architect, QA engineer or project manager, should understand the common goal for the team and communicate with each other. For a project leader it is crucially important to explain acute points of the product, its strong and weak sides, structure, time limits and to organize people’s work on the complex project.
Surely it is absolutely impossible to prevent all the bugs, but with the help of certain practices their number can be reduced to minimum that results in avoiding much hassle and additional investments. One of the useful practices which helps to prevent regression bugs appearance is writing test units. It consists in testing separate parts of the code to reveal defects. The reduced amounts of code are taken and their functionality is shown to the customers.
In such a way if the code contains some bugs it will not be so expensive for the company to fix them than if they are found after the release. It is also desirable to write down all the requirements for the current project and check whether the program corresponds to them progressing from one stage to another. The most important point that should be always remembered by any QA is that the quality of his work is estimated not in the quantity of bugs found before the product deployment, but their number found by customers after the release.