Re: [Xen-devel] [PATCH for-4.10] scripts: add a script for build testing

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Wei Liu writes ("Re: [PATCH for-4.10] scripts: add a script for build testing"):
> On Mon, Oct 23, 2017 at 01:02:00PM +0100, Ian Jackson wrote:
> > In particular, if you:
> >  * check that the tree is not dirty
> >  * detach HEAD
> 
> I think these two checks are good.
> 
> >  * reattach HEAD afterwards at least on success
> 
> This is already the case for git-rebase on success.

No.  git-rebase _rewrites_ HEAD.

Your script should just check out the intermediate commits.  You
probably don't in fact want git-rebase.  In particular, you don't want
to risk merge conflicts.

I have a script I use for dgit testing that looks like this:

  #!/bin/bash
  #
  # run  git fetch main
  # and then this

  set -e
  set -o pipefail

  revspec=main/${STTM_TESTED-tested}..main/pretest

  echo "testing $revspec ..."

  git-rev-list $revspec | nl -ba | tac | \
  while read num rev; do
          echo >&2 ""
          echo >&2 "testing $num $rev"
          git checkout $rev
          ${0%/*}/sometest-to-tested
  done

FAOD,

Signed-off-by: Ian Jackson <ijackson@xxxxxxxxxxxxxxxxxxxxxx>

for inclusion of parts of this in the Xen build system.

Ian.

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