Test whether a log message is generated using Boost.Log

Question

I am currently using Boost.Log in one of my software projects. There is one case, where I report an error condition by using a log message. I would like to test whether this condition is detected correctly using google testing framework. Just to be clear, I want to test whether the message is generated. It may be removed by a filter, but this should not cause the test to fail. Is this possible at all? Any hints? Thanks!

Answer 1

For base yes-or-no testing, simply use assert, something like this:

#include <assert.h>     /* assert */

void print_number(int* myInt) {
  assert (myInt!=NULL);
  // Boost.Log stuff...
  // print_number stuff...
}

this will give you a straight up message (depending on compiler/OS) if the test fails.