Re: [PATCH v1] Add a way to supply stdin to TAP tests

On Tue, May 07, 2019 at 09:39:57AM -0400, Andrew Dunstan wrote:
>
> On 5/6/19 10:42 PM, David Fetter wrote:
> > On Tue, May 07, 2019 at 11:05:32AM +0900, Kyotaro HORIGUCHI wrote:
> >> Hi.
> >>
> >> At Sun, 28 Apr 2019 17:07:16 +0200, David Fetter <david(at)fetter(dot)org> wrote in <20190428150716(dot)GP28936(at)fetter(dot)org>
> >>> Our test coverage needs all the help it can get.
> >>>
> >>> This patch, extracted from another by Fabian Coelho, helps move things
> >>> in that direction.
> >>>
> >>> I'd like to argue that it's not a new feature, and that it should be
> >>> back-patched as far as possible.
> >> The comment for the parameter "in".
> >>
> >> +# - in: standard input
> >>
> >> Perhaps this is "string to be fed to standard input". This also
> >> can be a I/O reference but we don't care that?
> > OK
> >
> >> + $in = '' if not defined $in;
> >>
> >> run($cmd, '<', \undef) seems to work, maybe assuming "<
> >> /dev/null", which might be better?
> > Is /dev/null a thing on Windows?
>
> However, I don't think we should be faking anything here. I think it
> would be better to  avoid setting $in if not supplied and then have this:
>
> if (defined($in))
>
> {
>
>     IPC::Run::run($cmd, '<', \$in, '>', \$stdout, '2>', \$stderr);
>
> }
>
> else
>
> {
>
>     IPC::Run::run($cmd, >', \$stdout, '2>', \$stderr);   
>
> }

Done that way.

Best,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778

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