I was browsing Gemini when I came across a reponse to my unit test question:
Sean Conner poses this question.
The answer is actually more sensible in C than it was in Smalltalk: a unit is a compilation unit. In C, it is a file.
Any changes to source will require changes to a file.
Once a source file is altered, it may screw something up in the resultant binary.
Therefore, there should be a unit test to check that the altered unit behaves as expected.
The easiest way to think of it in C is: assume make's view of the system.
Re: What is a unit test
That is not a bad answer for C.
it's probably not a bad answer for several different languages.
The only clarification I can see being made is to only test non-static functions
(functions that have visibility outside the file they're defined in)
and not have specific tests for static functions
(functions that only have visibility to code in the C file)
to allow greater flexibility in implemenation and prevent tests from breaking too often.
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