Top-Down and Bottom-up Approach in Integration Testing

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While doing Integration testing we are following Top-down and Bottom-up approach.

Also check out my previous posts on Performance Testing, Tips For test case design and Bug Life Cycle.

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.

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About Bijay Kumar

I am Bijay from Odisha, India. Currently working in my own venture TSInfo Technologies in Bangalore, India. I am Microsoft Office Servers and Services (SharePoint) MVP (5 times). I works in SharePoint 2016/2013/2010, SharePoint Online Office 365 etc. Check out My MVP Profile.. I also run popular SharePoint web site

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