Question

How might you test for possible interface misunderstanding in software? Here “interface misunderstanding" refers to calling functions on an interface with the correct function signatures but with incorrect intent.

pls state what u need. the question is pretty straight forward.

Answer 1

Interface testing:
The main role of interface testing is to find out the invalid assumptions about the interfaces of a software program.
It also finds the faults occurred due to the errors present in the interfaces.
Interface errors:
There are many categories of interface errors.
1.Errors due to change in function:
Suppose we changed the logic in one module and we didn't updated that particular change in the other related modules leads to interface errors.
2.Errors due to misuse of interface:
This error occurs due to calling the component with parameters which are given in the wrong order.
3.Errors due to missing initialization values:
Sometimes the programmer might forget to initialize or reinitialize the values like pointer variables which leads to interface errors
4.Errors due to misunderstanding of interface:
In this scenario, the errors occurs because the calling module embeds wrong assumptions about the behavior of called module.
5.Errors due to timing:
These errors are occurred due to lack of synchronization between the processes that are communicating.The called module and the calling module performs their functionality at different speeds which leads to the interface errors.
How to perform interface testing:
To perform interface testing,we need to follow the given points.
1.For message passing systems,we should always perform stress testing.
2.Always design the test cases in such a way that it causes the software to fail.
3.Vary the order of the modules which are activated in the shared memory systems.
4.Always design test cases in such a way that the range of the parameters which are provided as input to the called component is at the extreme ends.
5.The pointer arguments must be tested with the null pointer values.