Robert_96

Unit testing is testing that is designed to verify individual modules (functions, classes, etc.) at a low level, to verify that module is behaving as specified. You usually use stubs or mock objects in unit tests, which keep the module isolated and do not rely on all of the other …

**Why system testing is required:** It is the first level of software testing where the software / application is tested as a whole. It is done to verify and validate the technical, business, functional and non-functional requirements of the software. It also includes the verification & validation of software application …