[Dev-C++] How to test methods with system calls

[Hiroyuki Y. <yam...@gm...>]

I'm testing some c++ programs having some methods with system calls, which
are like write(2) and read(2).
(I use googletest for the test.)

Those write(2) and read(2) can fail for some reason, but
it's not predicable, so I'm wondering how I can test error handling codes
for errors by those system calls.

Is there any way I can simulate those system call' errors without
modification in source code ?
How do you usually test those ?

Thanks in advance,

Hiroyuki