Test as early as possible
Instead of employing system testers at the final stages of the design process, allow them to do testing at just right moments during analysis and design stages of your project. Testing that involves analysis and design models does not only help to identify problems early in the software development process ( it is cheaper and easier to fix them), but also to estimate the overall effort required to implement adequate system testing by determining what should be tested.
Frequent and early testing assumes that the software is presented in abstract or incomplete form.
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Test often
We firmly believe that an iterative or incremental development process that contributes to gradually building system capabilities (it is sometimes called an iterative enhancement) is best suited for most projects. Once the iterations are completed on the analysis, design and implementation stages, the software product must be tested. Upon completion of the first increment, some types of testing take the form of regression testing.
Test sufficiently
Exhaustive testing of every aspect of the software system is impossible. The resources consumed for testing should be directed to where they will give the maximum effect. Our specialists prefer methods based on risk analysis, the reusing of test cases, and statistical sampling of input data for test cases.
Testing perspective
Qualified testers are the persons responsible for testing software who must have special skills. In many ways, being a testing expert is much more difficult than being a competent developer, because it requires not only excellent understanding of the development process and its products, but also the ability to anticipate possible failures and errors in the software. Let’s consider a simple example.
Suppose the developer might need to find an algorithm for bouncing some image within the rectangular area of the computer screen. The tester must anticipate possible errors and failures that could occur through the fault of the developers, and find reliable and effective ways of detecting failures that may result from probable errors.
For example, the tester might want to check that the image which hits exactly in the corner of the rectangle, or, say, does fully move out this angle. The testing specialist has a very difficult job. A testers has to approach a software app with the attitude which inquires everything about this product. This approach is referred to as a testing perspective.
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