Advantages Top Down Integration Testing
- There is no need to write drivers.
- Interface errors are identified at an early stage and fault localization is also easier.
- Low-level utilities that are not important are not tested well and high-level testers are tested well in an appropriate manner.
- Representation of test cases is easier and simple once Input-Output functions are added.
Steps in Top Down Integration Testing
Top-down testing is a type of incremental integration testing approach in which testing is done by integrating or joining two or more modules by moving down from top to bottom through the control flow of the architecture structure. In these, high-level modules are tested first, and then low-level modules are tested. Then, finally, integration is done to ensure that the system is working properly. Stubs and drivers are used to carry out this project. This technique is used to increase or stimulate the behavior of Modules that are not integrated into a lower level. Processing:
The following are the steps that need to be followed during processing :