Re: [PATCH 2/2] qemuxml2argvtest: Test localtime clock basis

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On Wed, Feb 05, 2014 at 03:26:23PM -0700, Eric Blake wrote:
> On 02/05/2014 07:32 AM, Michal Privoznik wrote:
> > When trying to introduce a test for previous patch, I've
> > noticed that the command line is constructed using current
> > time. This won't work in our test suite (unless you guys
> > wants to set a specific time prior to each test run :) ).
> > Therefore we need to mock calls to time(2) to return the
> > same value every time it's called.
> 
> Slick.  But as we only support mocking calls on Linux, you have
> converted a test from generic platform to Linux-only.  Then again, qemu
> tests only run where we support qemu, which is currently Linux only, so
> I'm not sure it will matter.  I guess we'll find out if anyone complains
> that it broke 'make check' on their platform.

FYI as a general rule the LD_PRELOAD approach should be capable
of working on any ELF platform, which is basically everything
we care about except Windows. The cwrap project from samba which
uses the same LD_PRELOAD trick claims to have validated such
portability.

Daniel
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