Re: [Breakage] Git v2.21.0-rc0 - t5318 (NonStop)
From: Johannes Sixt
Date: Fri Feb 08 2019 - 14:11:37 EST
Am 08.02.19 um 19:03 schrieb Jeff King:
> On Fri, Feb 08, 2019 at 12:49:59PM -0500, Randall S. Becker wrote:
>> Would you object to something like this:
>> if [ ! -e /dev/zero ]; then
>> # use shred or some other mechanism (still trying to figure out a solution)
>> # existing dd
> That's fine, as long as it's wrapped up in a function in order to keep
> the tests readable.
> Though I suspect we may be able to just find a solution that works
> everywhere, without having two different implementations. If we know we
> need $count bytes for dd, we could probably just generate a file with
> that many NULs in it.
> Other cases don't seem to actually care that they're getting NULs, and
> are just redirecting stdin from /dev/zero to get an infinite amount of
> input. They could probably use "yes" for that.
If the data does not have to be a sequence of zero bytes, the
* `test-genrandom seed-string $size` for a sequence of reproducible
* `printf "%0*d" $size 0` for a sequence of '0' characters.
In t5318, the zero bytes do matter, though.