Genislab TechnologiesThe incremental testing approach has the advantage that the defects are found early in a smaller assembly when it is relatively easy to detect the cause.
- Another advantage is that all programs are integrated one by one and a test is carried out after each step.
- A disadvantage is that it can be time-consuming since stubs and drivers have to be developed and used in the test.
- Within incremental integration testing a range of possibilities exist, partly depending on the system architecture:
- Top down: Testing takes place from top to bottom, following the control flow or architectural structure (e.g. starting from the GUI or main menu). Components or systems are substituted by stubs.
- Bottom up: Testing takes place from the bottom of the control flow upwards. Components or systems are substituted by drivers.
- Functional incremental: Integration and testing takes place on the basis of the functions and functionalities, as documented in the functional specification.
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Karan says
Another advantage is that “all programmers” are integrated one by one. Mistake “all programs”
ISTQB Guide says
Thank you Karan for pointing out the mistake, it has been corrected.
jimeet says
There is incorrect words “nad” ,Please correct words is “and” in Functional incremental in bottom side.
ISTQB Guide says
Thank you for pointing out the error. It has been corrected.