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Hi. I been writing a C program for Linux, and wanted to test error handling subroutines. Is there any FOSS that provides fault injection and/or mutation testing?
I'm not sure if this is what you need, but I do know that gdb can be used to send any signal to a program being debugged at any point during execution (though it may have to be at a breakpoint).
If you want to test faults in input data, then that's surely a matter of setting up your test cases with faults...
There are commercial tools, such as X-Runner, and I think there are some FOSS tools for error/regression testing (check out Eclipse add-ons), but I'm not familiar with them, unfortunately.