![]() ![]() This testing does not waste time waiting for all modules to be developed.Fault localization is easy in this approach.But drivers are complex than stubs and takes more time to develop. The main purpose of drivers is to fulfill the requirements of missing or incomplete modules to evaluate the lower level modules. Drivers are used in the bottom up approach which is used when the main module is not ready.Drivers are used to test the lower-level modules when the upper-level modules are not yet developed. In the early phases of software development, this testing provides high deployment coverage.ĭrivers are generally known as “calling program”.At last, drivers are removed and builds are integrated moving upwards in the program. Bottom up integration testing is a testing process in which low-levels modules are integrated into clusters (builds) then develop the drivers after that build is evaluated.The key point of this testing is that it is user friendly and there is no need of stubs.It is a type of testing which is used to analyze the risks in the software system or to evaluate that the system works as expected or not.Bottom up approach is opposite of top down approach.This testing takes help of drivers for testing the software which are the temporary module for integration testing.Bottom-Up Approach is an integration testing in which testing takes place from bottom to up that is lower-level modules are tested first with higher level modules then upper-level modules are tested.This approach is also known as “inductive reasoning” and the term refers to the synthesis. ![]()
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