Testing must be done to ensure that the errors and faults in the software are eliminated. Testing is all about identifying faults in a software product. Testing should start and planned at an early stage and should be based on the client’s requirements. The testing process is executed by a person known as a tester or a group of testers. Now there are different methods of testing depending on the tester he or she can test both the structural and the functional features of a software. Software testing can be categorized in the below methods.

Unit testing is a method that tests only a particular set of codes or a specific basic program for the software. The syntax and the logical errors in a program and codes are identified in this testing category. This may be done by a single tester or a group of testers to ensure that there is no room for future errors. More info on unit testing an error can be corrected before moving to the next stage. The unit testing is the most crucial since a recurring error can lead to unidentifiable errors in the integration stage.

Integration testing is a category of testing done after combining the basic software units. Integration testing errors can originate from poor testing at the unit testing stage or an error that occurs while integrating the various programs. These group of the integrated units should be functionable and should lack errors. This product is tested using results on the users computer while testing a software is called system testing. The functionality of the system is done in their category of software testing methods.

Interface testing is another category of software systems. A tester checks whether the interface is suitable for users or not. This interface should always be simple to understand and use and the interface of a software should be attractive and maybe used even to market the software developer. the software developed is tested whether it meets the requirements and does it please the users and the managers of the organization. Managers should give reviews about the new software installed in their systems and ask for support where the are unable to understand.

Operation testing is for genuinely assure that the system functions as required by the users. Adding a lot of work to the software system and checking its performance is one basic way of non-functionality testing. In maintainability testing the recovery of the system is tested and checked by the system tester such that it may reduce the maintainability cost. Compatibility testing can be done either during the system testing or during the system installation phase. In conclusion I would advise both people who learn about testing and professional testers to use all the above testing categories when testing a software.