fileA.c has a static function (static int funcA())
The fileA.c can not be modified.
fileB.c How can I use the funcA()?
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What's the purpose? the `static` is added for a reason, no? – Sourav Ghosh May 16 '17 at 09:19
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The product code has a static function. And now, we're doing the unit testing, we can only write test case code to test it, but can't change the produce code. – Cena May 16 '17 at 09:21
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`#include "fileA.c"` – Erik W May 16 '17 at 09:24
2 Answers
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In general you cannot, that's the entire point of static in this case.
Perhaps fileA.c has a way to get the address of the function, then you can use that to make a call, but you can't reference static symbols directly.
For test code, one "trick" that's often done is to #include the C file in the test file, so in fileA_test.c you'd have:
#include "fileA.c"
bool test_fileA_something(void)
{
TEST_ASSERT(foo() == 42);
}
The above assumes that foo is a static function inside fileA.c, and this works since the files are compiled together.
unwind
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Not. The compiler has every right to not include funcA in fileA.obj. And even if it is included, it might not be in a form that the linker can use. In fact, if included it must be in a way that doesn't clash with other functions names funcA
MSalters
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