Re: [PATCH 04/10] test-lib: Replace uses of $(expr ...) by POSIX shell features.

> Johannes Schindelin schrieb:
> 
> > On Wed, 18 Mar 2009, Johannes Sixt wrote:
> > 
> >> In particular:
> >>
> >> - Test case counting can be achieved by arithmetic expansion.
> >>
> >> - The name of the test, e.g. t1234, can be computed with ${0%%} and 
> >>   ${0##}.
> >>
> >> Signed-off-by: Johannes Sixt <j6t@kdbg.org>
> > 
> > I guess this makes the tests less slow on Windows?  Do you have 
> > numbers?
> 
> Actually, while reading through test-lib.sh I found those expr 
> expressions quite difficult to understand, and my primary intent was to 
> make the code more readable. Furthermore, as you can see in the hunk 
> that touches test_known_broken_{ok,failure}_ that the $(( )) construct 
> is already in use, so it's also a change to improve consistency.
> 
> The shorter runtime (primarily on Windows) is just a nice side effect, 
> although the gain probably vanishes in the noise.

> > FWIW I run the tests on Windows with -j10 these days, and they take 
> > about 15 minutes on a quad core 3GHz machine (which I may use from 
> > time to time; the machine is not mine, otherwise it would run Linux).
> 
> Last time I tried -j<something> it bailed out early. I didn't try again 
> since then. Sequential tests finish in 30-40 minutes here, but I don't 
> run SVN tests.