[bug#50359] [PATCH 3/3] import: Add 'generic-git' updater.

[Ludovic Courtès]

Xinglu Chen <public@yoctocell.xyz> skribis:

> * guix/git.scm (ls-remote-refs): New procedure.
> * tests/git.scm ("remote-refs" "remote-refs: only tags"): New tests.
> * guix/import/git.scm: New file.
> * doc/guix.texi (Invoking guix refresh): Document it.
> * tests/import-git.scm: New test file.
> * Makefile.am (MODULES, SCM_TESTS): Register the new files.
>
> Co-authored-by: Sarah Morgensen <iskarian@mgsn.dev>

Nice, thanks for writing the tests!

> +++ b/tests/git.scm
> @@ -1,5 +1,6 @@
>  ;;; GNU Guix --- Functional package management for GNU
>  ;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
> +;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -161,4 +162,29 @@
>                (commit-relation master1 merge)
>                (commit-relation merge master1))))))
>  
> +(test-equal "remote-refs"
> +  '("refs/heads/develop" "refs/heads/master"
> +    "refs/tags/v1.0" "refs/tags/v1.1")
> +  (with-temporary-git-repository directory
> +      '((add "a.txt" "A")
> +        (commit "First commit")
> +        (tag "v1.0" "release-1.0")
> +        (branch "develop")
> +        (checkout "develop")
> +        (add "b.txt" "B")
> +        (commit "Second commit")
> +        (tag "v1.1" "release-1.1"))
> +    (remote-refs directory)))

[...]

> +(test-equal "latest-git-tag-version: no custom prefix, suffix, and delimiter"
> +  "1.0.1"
> +  (with-temporary-git-repository directory
> +      '((add "a.txt" "A")
> +        (commit "First commit")
> +        (tag "1.0.1" "Release 1.0.1"))
> +    (let ((package (make-package directory "1.0.0")))
> +      (latest-git-tag-version package))))

I think that for each of these tests that uses the ‘git’ command under
the hood, you’ll need something like what ‘tests/git.scm’ does:

  (unless (which (git-command)) (test-skip 1))
  (test-equal …)

It’d admittedly annoying to have this boilerplate, but I can’t think of
a better solution.

Could you send an updated version?  Then we’ll be all set!

Thank you,
Ludo’.