The object-oriented programming features in programming languages usually affect some points of testing.
Such characteristics as inheritance and interfaces support polymorphism in which code manipulates objects without knowing their precise class. Testers must make sure that the code works irrespective of the class of such objects. Language characteristics that support and enforce data hiding can make testing more difficult as in some cases the operations must be added to a class interface just to execute testing. However, the presence of these characteristics can promote better and returnable testing software.
The changes in programming languages, test designing and object of analysis influence testing. We still can use unit testing despite the fact that its meaning has changed. We also execute integration testing to ensure that different subsystems can work properly and consistently. We require system testing to ensure that software satisfies all the requirements. We always do regression testing to make sure that the latest round of changes to the software hasn’t had a negative effect.
The differences between “old” and “modern” methods of designing and qa testing services are more concentrated on objects instead of functions transforming inputs into outputs. The most important difference is how the object-oriented software is designed as a set of objects that significantly model a problem and then cooperate to find a solution. This approach is based on the concept that though the problem solution might require to change with time, the composition and parts of the problem itself must not change as often.
Therefore, software whose design is structured from the problem will be more capable of adapting to changes later. A programmer that knows the problem and its components can identify them in the software, thus making the program easier to maintain. Moreover, as the components are resulted from the problem, they can be usually reused in the creation of other programs to fix similar problems, making the software components more reusable.
The Advantages of Quality Assurance Testing.
A great advantage of this approach to development is that analysis models map directly to design models which, in its turn, map to code. So we can begin testing during analysis and improve the tests done in analysis to tests for design. The last ones, in turn, can be transformed into the tests of implementation. This suggests that a testing process can overlap with the design process. We can highlight three main benefits of testing analysis and design models:
Test cases can be identified earlier in the process. Early testing allows analysts and developers to better understand and express requirements and to make sure that the indicated requirements are testable.