Ch. 8: Software Testing

Subscribe to my channel https://www.youtube.com/channel/UCd7lcZntY184Z2Auues8wZw?sub_confirmation=1 Watch more videos https://www.youtube.com/channel/UCd7lcZntY184Z2Auues8wZw Stages of testing Development testing, where the system is tested during development to discover bugs and defects. Release testing, where a separate testing team test a complete version of the system before it is released to users. User testing, where users or potential users of a system test the system in their own environment. Development testing Development testing includes all testing activities that are carried out by the team developing the system. Unit testing, where individual program units or object classes are tested. Unit testing should focus on testing the functionality of objects or methods. Component testing, where several individual units are integrated to create composite components. Component testing should focus on testing component interfaces. System testing, where some or all of the components in a system are integrated and the system is tested as a whole. System testing should focus on testing component interactions. Release testing Release testing is the process of testing a particular release of a system that is intended for use outside of the development team. The primary goal of the release testing process is to convince the supplier of the system that it is good enough for use. Release testing, therefore, has to show that the system delivers its specified functionality, performance and dependability, and that it does not fail during normal use. Release testing is usually a black-box testing process where tests are only derived from the system specification. User testing User or customer testing is a stage in the testing process in which users or customers provide input and advice on system testing. User testing is essential, even when comprehensive system and release testing have been carried out. The reason for this is that influences from the user’s working environment have a major effect on the reliability, performance, usability and robustness of a system. These cannot be replicated in a testing environment.