[bind10-dev] libfaketime for improving unit (and luttuce?) tests

[Jeremy C. Reed]

I didn't look at libfaketime (but I had heard of it).

Maybe we should look at BIND9's bin/tests/virtual-time/vtwrapper.c which 
offers gettimeofday(), select(), poll(), kevent() and epoll_wait() Unix 
system calls. From the virtual-time README:

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gettimeofday() returns a date in virtual/exponentially inflated
delay from an epoch, select(), poll(), kevent() and epoll_wait()
timeouts are deflated down to at least 10ms.

These tests depends on LD_PRELOAD being supported by the runtime
loader.

Beware BIND clock uses unsigned integer, in 22 seconds isc_time_now()
overflows and breaks assertions. Note 22 real seconds is 136 virtual
years...
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