What are the known methodologies for extracting and designing integration test scenarios from requirements specification documents and design documents ?

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kurtz182

  • Nov 21st, 2009
 

Integration testing is performed before system testing. 

The methodologies are:

1) Big Bang approach:  Where all or most of the modules or functionalities are combined to form a complete software system.  This approach is used to save time, but can get complex if the test cases and their results are not recorded properly. 

2) Bottom Up approach:  Where the lowest level components are test first, then used to test higher level components.  It is easiest to find defects using this approach.

3) Top Down approach:  Where top modules are tested.  It is easiest to discover branch-related problems using this method.

4) Sandwich approach:  Bottom Up and Top Down are used together in this approach. 

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