Testing object-oriented software

The best approach to testing object-oriented software depends on many factors: the application-under-test, the development approach, the organization of the development and quality assurance teams, the criticality of the application, the development environment and the implementation language(s), the use of design and language features, project timing and resource constraints. Nonetheless, we can outline a general approach that works in stages from independent consideration of classes and their features to consideration of their interactions. A coherent strategy would include three main phases: intraclass, interclass, and system and acceptance testing.