Re: Test failures with python versions when building git 1.8.1

["Joachim Schmitz" <jojo@schmitz-digital.de>]

Jeff King wrote:
> On Tue, Jan 01, 2013 at 11:18:46PM -0800, Junio C Hamano wrote:
>
>> Jeff King <peff@peff.net> writes:
>>
>>> [1] This symlink is doubly wrong, because any use of symbolic links
>>>     in the test scripts needs to depend on the SYMLINKS prereq, and
>>>     this does not.
>>
>> Yeah, I think we have discussed this once already in
>>
>> http://thread.gmane.org/gmane.comp.version-control.git/210688/focus=210714
>
> Thanks for the pointer; it looks like nothing productive came of the
> earlier discussion. To give a hat trick of failure to this line of
> code, I notice that the existing code also does not properly put
> quotes around $GIT_BUILD_DIR.
>
>>> [2] In both the current code and what I showed above, the test
>>>     scripts depend on things in contrib/. This is probably a bad
>>>     idea in general, as the quality of what goes into contrib is
>>>     not as closely watched (especially with respect to things like
>>>     portability). Certainly I would not have known to look more
>>>     carefully at a patch to contrib/svn-fe for breakage to the test
>>> suite.
>>
>> As long as such tests are made skippable with appropriate
>> prerequisites, I do not think it is bad to have their tests in t/; I
>> would say it is rather better than having them in contrib/ and leave
>> it not run by anybody, which happened to some of the stuff in
>> contrib/ already.
>
> Good point. While my sense of decorum wants to keep contrib totally
> split out, from a practical point of view, it is better to have more
> people run the tests and report failures than not.
>
> Whether we end up doing something with contrib and tests or not, the
> patch below gives a minimal fix in the meantime. Dan, does it fix your
> problem?
>
> -- >8 --
> Subject: [PATCH] t9020: don't run python from $PATH
>
> In t9020, we symlink in a python script from contrib to help
> with the testing. However, we don't munge its #!-line, which
> means we may run the wrong python (we want the one in
> PYTHON_PATH). On top of this, we use a symlink without
> checking the SYMLINKS prereq, and we fail to properly quote
> GIT_BUILD_DIR, which may have spaces.
>
> Instead of symlinking, let's just write a small script which
> will feed the contrib script to PYTHON_PATH. To avoid
> quoting issues, we just export the variables the script
> needs to run.
>
> Signed-off-by: Jeff King <peff@peff.net>
> ---
> t/t9020-remote-svn.sh | 5 ++++-
> t/test-lib.sh         | 2 +-
> 2 files changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/t/t9020-remote-svn.sh b/t/t9020-remote-svn.sh
> index 4f2dfe0..416623b 100755
> --- a/t/t9020-remote-svn.sh
> +++ b/t/t9020-remote-svn.sh
> @@ -14,7 +14,10 @@ export PATH="$HOME:$PATH"
>
> # We override svnrdump by placing a symlink to the svnrdump-emulator
> in . export PATH="$HOME:$PATH"

With this patch that comment is no longer true.

> -ln -sf $GIT_BUILD_DIR/contrib/svn-fe/svnrdump_sim.py "$HOME/svnrdump"
> +export GIT_BUILD_DIR
> +write_script svnrdump <<\EOF
> +exec "$PYTHON_PATH" "$GIT_BUILD_DIR"/contrib/svn-fe/svnrdump_sim.py
> "$@" +EOF
>
> init_git () {
>  rm -fr .git &&