Форум Нижнего Тагила

The principles of software testing are fundamental guidelines that help testers plan and execute effective tests.
These principles ensure testing is efficient, meaningful, and goal-oriented.
Here are the seven key principles of software testing:
Testing can reveal that defects exist in the software — but it can never guarantee that there are no defects.
Even if no bugs are found, it doesn’t mean the product is perfect; it only means the tested parts are working correctly under specific conditions.

2. Exhaustive Testing is Impossible
It’s not practical to test every possible input, path, or scenario. Instead,
testers focus on risk-based and priority-based testing, selecting the most important areas to test thoroughly.

3. Early Testing Saves Time and Cost
That’s why testing should start as early as possible in the software development life cycle (SDLC), ideally during the requirement and design stages.
why testing should start as early as possible in the software development life cycle (SDLC), ideally during the requirement and design stages.

4. Defect Clustering
A small number of modules or components usually contain most of the defects.
This means testers should pay extra attention to these high-risk or frequently changing areas.

5. Pesticide Paradox
If the same set of test cases is used repeatedly, it will stop finding new defects. To overcome this,
testers must regularly review and update test cases to cover new scenarios and improve defect detection.
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