Goals Achieved By QA Outsourcing Experts When Using The Equivalence Classes Testing
Equivalence classes and boundary conditions are among the key concepts in the classical theory of testing. Performing a traditional test such as boundary condition analysis you are most likely to identify an error existing in the program. Thinking about selecting sets of such tests, the expert divides all the possible tests into the groups, specifying the most effective ones in each group.
QA outsourcing experts from Ukraine can effectively do your testing work within deadlines and provide you with accurate results.
The equivalence classes
If the two tests are expected to produce the same result, they are considered to be equivalent. A group of tests forms an equivalence class if the following conditions are met:
- All the tests are designed to detect the same error.
- If one of the tests will detect the error, the others are likely to detect it too.
- If one of the tests does not detect the error, the others are likely not to cope with this task too.
Of course, apart from these theoretical criteria there must be also actual ones allowing to include a particular group of tests in one class. So the selection may be based on the following.
- Tests include values of the same input.
- The same program operations are performed to run these tests.
- The results of all the tests lead to generating the same output values.
- None of the tests does trigger the execution of error processing block in the program or execution of this block is triggered by all groups of the tests.
Feel like saving on your development costs? Send your products to professionals of overseas software testing company for testing and focus on your core development processes. You will not need to make huge investments needed to conduct rigorous in-house testing, as in opposed to this, qa outsourcing allows to lower costs associated with unidentified software errors.
Finding equivalence classes
Finding equivalence classes is a subjective process. Two experts testing the same program will make different lists of the classes. But you should still try to identify as many as possible of equivalence classes: it will save time later, in the nearest future, and make testing procedure more efficient, delivering you from the necessity to rerunning equivalent tests since it is an unnecessary effort. After partitioning all the expected tests into classes then you may select one test or more from each class, that, in your opinion, are the most effective – the others should not be run at all – it is no good.
Click here to see list software testing companies and find perfectly competent and highly experienced qa & testing specialists that will satisfy all your testing needs.