Explain Object Oriented Testing Stretergy.

Object-Oriented Test Strategies

·         Unit Testing – components being tested are classes not modules

·         Integration Testing – as classes are integrated into the architecture regression tests are run to uncover communication and collaboration errors between objects

·         Systems Testing – the system as a whole is tested to uncover requirement errors

Object-Oriented Unit Testing

·         smallest testable unit is the encapsulated class or object

·         similar to system testing of conventional software

·         do not test operations in isolation from one another

·         driven by class operations and state behavior, not algorithmic detail and data flow across module interface

Object-Oriented Integration Testing

·         focuses on groups of classes that collaborate or communicate in some manner

·         integration of operations one at a time into classes is often meaningless

·         thread-based testing – testing all classes required to respond to one system input or event

·         use-based testing – begins by testing independent classes (classes that use very few server classes) first and the dependent classes that make use of them

·         cluster testing – groups of collaborating classes are tested for interaction errors

·         regression testing is important as each thread, cluster, or subsystem is added to the system.