(For those interested this question is also at
http://stackoverflow.com/questions/14191855/how-do-you-fake-the-time-for-boo...
)
Hi all,
If possible, how do you fake the time for the purpose of triggering boost
timers in a unit test?
For example, is it possible to achieve something like the following:
#include <iostream>#include #include
void print(const boost::system::error_code& /*e*/){
std::cout << "Hello, world!\n";}
int main(){
boost::asio::io_service io; // Possibly another class
needed here, or a way of setting the clock to be fake
boost::asio::deadline_timer t(io, boost::posix_time::hours(24));
t.async_wait(&print);
io.poll(); // Nothing should happen - no handlers ready
// PSEUDO-CODE below of what I'd like to happen, jump ahead 24 hours
io.set_time(io.get_time() + boost::posix_time::hours(24));
io.poll(); // The timer should go off
return 0;}
I'm aware I could wrap the io_service and deadline_timer in a wrapper and
write my own test implementation, thus providing the real and test version
to the production code I'm trying to test.
What I'm hoping is the boost framework allows a way to create an io service
that is related to a fake clock rather than the system time, meaning I
don't need to create my own wrappers.
I should also point out that the docs indicate providing something like my
own WaitableTimerService orTimerService may be the way to go, but I can't
see which one (if any) is responsible for providing the clock.
Any tips appreciated!
Josh.
