Re: [PATCH] t0060: loosen overly strict expectations

> The dirname() tests file were developed and tested on only the five
> platforms available to the developer at the time, namely: Linux (both 32
> and 64bit), Windows XP 32-bit (MSVC), MinGW 32-bit and Cygwin 32-bit.
>
> http://pubs.opengroup.org/onlinepubs/9699919799/functions/basename.html
> (i.e. the POSIX spec) says, in part:
>
>         If the string pointed to by path consists entirely of the '/'
>         character, basename() shall return a pointer to the string "/".
>         If the string pointed to by path is exactly "//", it is
>         implementation-defined whether "/" or "//" is returned.
>
> The thinking behind testing precise, OS-dependent output values was to
> document that different setups produce different values. However, as the
> test failures on MacOSX illustrated eloquently: hardcoding pretty much each
> and every setup's expectations is pretty fragile.
>
> This is not limited to the "//" vs "/" case, of course, other inputs are
> also allowed to produce multiple outpus by the POSIX specs.

> So let's just test for all allowed values and be done with it. This still
> documents that Git cannot rely on one particular output value in those
> cases, so the intention of the original tests is still met.
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>