Friday, September 9, 2011

Top-Down and Bottom-up Approach in Integration Testing:-

While doing Integration testing we are following Top-down and Bottom-up approach:-
Top-Down Approach:-
Integration of main module with some of the stub modules is called as Top-down approach.In this case we are using temporary programs instead of under constructive Stub modules.By doing this we can stop the control to the module which is under construction.
Bottom-Up Approach:-

Integration of sub modules without main module is called as Bottom-Up approach.In this case instead of main
module we are using a temporary program called as driver.Here we are using driver to send the control or to connect to the next module.