Bottom Up Integration testing approach is the opposite to top down where lower level components are tested first and proceed upwards to the higher level components. In this approach when highest level components are developed they are integrated with the lower level components. It is known as bottom-up or lowers to highest approach. There is possibility of missing highest level components which affects the integration process. The main advantage of the Bottom Up approach is that defects are more easily found.
In this situation to make the integration possible developer develop the temporary dummy program that is utilised in place of missing module known as ‘DRIVER’.
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| Bottom Up Integration testing |
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