Difference between Unit Testing and Sandwich Testing

Unit Testing:
Unit Testing is the type of Software Testing level in which each individual components of a software are tested. Unit Testing is generally performed by developer. Unit Testing can’t be used for those systems which have a lot of interdependence between different modules. It does not allow for parallel testing.

Sandwich Testing:
Sandwich Testing is also known as the hybrid integration testing. Sandwich Testing comprise the bottom-up approach testing and top-down approach testing, therefore it uses the advantage of both bottom up approach and top down approach. Sandwich Testing also can not be used for those systems which have a lot of interdependence between different modules and it allows parallel testing.







Difference between Unit Testing and Sandwich Testing:

S.NO Unit testing Sandwich testing
1. In unit testing, software’s module are tested separately. Sandwich testing comprise the top-down and bottom-up testing.
2. Defects are identified easily in unit testing. Defects are not identified easily in sandwich testing testing.
3. In Unit testing does not matter how big project is. Sandwich Testing is used for very large projects having sub projects.
4. Unit testing is cost efficient. Sandwich testing is not cost efficient.
5. Unit testing does not allow parallel testing. Sandwich testing allows parallel testing.
6. Unit Testing can’t be used for those systems which have a lot of interdependence between different modules. Sandwich Testing also can not be used for those systems which have a lot of interdependence between different modules.



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