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What is Integration Testing?What is Bottom Up & Top Down
Testing?
What actually the Stub & Driver is?
Explain me giving practical example?
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Answer Posted / hardik
Integration Test
Purpose:
To ensure that code is implemented and designed properly
to take unit tested modules and build a program structure that has been dictated by design
IT only after UT
Combining the individual components to uncover errors associated with interfacing
Normally: Black box oriented
Doer: independent Test team
Tests interactions between two or more units or
components. Usually done by programmers.
Emphasizes interfaces.
Issues:
In what order are units combined?
How do you assure the compatibility and correctness of externally-supplied components?
How are units integrated? What are the implications of this order?
Top-down => need stubs; top-level tested repeatedly.
Bottom-up => need drivers; bottom-levels tested repeatedly.
Critical units first => stubs & drivers needed; critical units tested repeatedly.
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