On 19/04/2023 14.27, Mads Kiilerich wrote:
On 18/04/2023 20:35, Manuel Jacob wrote:
# HG changeset patch
# User Manuel Jacob <m...@manueljacob.de>
# Date 1680139355 -7200
#      Thu Mar 30 03:22:35 2023 +0200
# Branch stable
# Node ID e5251abd0a3c677d7bb0828f3a744789bd6fe4cb
# Parent  30082bb9719eb00f3be0081b7221d7c3061d4345
# EXP-Topic tests-git
tests: prevent Git system and global configuration from loading

This reduces differences between different testing environments. Something
similar is already done for Mercurial (in the lines directly above this
change).


Yes, I agree that it is a problem/bug that the global configuration is used at all. Global configuration should be disabled for git, as we do for hg.

The parent changeset has originally been added to support user.useconfigonly. With this changeset, the original motivation for it becomes obsolete. However, it is still necessary to set the committer name via a environment variable, at
least on my machine.


I think this changeset should come first. As you say, it makes the test work the same way everywhere. user.useconfigonly is probably just one of many settings that could break it.


If it still doesn't work for you with this change (without the previous change), it can't be because your setup has user.useconfigonly set. There must be some other explanation.

If I have only this changeset without the parent, command `git commit -m "committed new 0" --author "User ǝɯɐᴎ <m...@example.com>" "97u1nbm0setup.py"` fails with:

Committer identity unknown

*** Please tell me who you are.

Run

  git config --global user.email "y...@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: empty ident name (for <m...@example.com>) not allowed
[end of output]

Because the error shouldn’t be the result of my configuration after this changeset, I would expect that it fails without the parent changeset on other machines as well (at least those with the same Git version as me (2.40.0)).

I never intended to imply that user.useconfigonly is the only reason why the previous changeset is required. Sorry for the confusion!

(Note that the GIT_CONFIG_ environment variables were introduced two years ago, and Kallithea still supports the 10 year old Git 1.7.4 . We must thus make sure we don't rely too much on the new feature.)

diff --git a/kallithea/tests/other/test_vcs_operations.py b/kallithea/tests/other/test_vcs_operations.py
--- a/kallithea/tests/other/test_vcs_operations.py
+++ b/kallithea/tests/other/test_vcs_operations.py
@@ -150,6 +150,8 @@
          testenv['LANGUAGE'] = 'en_US:en'
          testenv['HGPLAIN'] = ''
          testenv['HGRCPATH'] = ''
+        testenv['GIT_CONFIG_SYSTEM'] = ''
+        testenv['GIT_CONFIG_GLOBAL'] = ''


As mentioned before: the git man page is very clear that the variables should be set to /dev/null to skip reading configuration files.

There is no indication in the git man page (or anywhere else I have found) that setting to /dev/null shouldn't work across all platforms. It seems like git in compat/mingw.c takes care of making it cross platform.

There is no mention of the semantics of setting it to an empty string. I do not like relying on undefined behaviour.

You’re right that the Git documentation mentions `/dev/null` but the empty string. I’ll change it.

If you disagree and have found a good reason to use an empty string instead of /dev/null, then please be explicit in code or commit message.


/Mads


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