[PATCH v3] tests: fix overeager scrubbing of environment variables

[Jens Lehmann <Jens.Lehmann@web.de>]

In commit 95a1d12e9b9f ("tests: scrub environment of GIT_* variables") all
environment variables starting with "GIT_" were unset for the tests using
a perl script rather than unsetting them one by one. Only three exceptions
were made to make them work as before: "GIT_TRACE*", "GIT_DEBUG*" and
"GIT_USE_LOOKUP".

Unfortunately some environment variables used by the test framework itself
were not added to the exceptions and thus stopped working when given
before the make command instead of after it. Those are:

- GIT_NOTES_TIMING_TESTS
- GIT_PATCHID_TIMING_TESTS
- GIT_PROVE_OPTS
- GIT_REMOTE_SVN_TEST_BIG_FILES
- GIT_SKIP_TESTS
- GIT_TEST*
- GIT_VALGRIND_OPTIONS

I noticed that when skipping a test the way I was used to suddenly failed:

GIT_SKIP_TESTS='t1234' GIT_TEST_OPTS='--root=/dev/shm' make -j10 test

This should work according to t/README, but didn't anymore, so let's fix
that by adding them to the exception list. And to avoid having a long
regexp put the exceptions in a separate variable using nicer formatting.

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Jeff King <peff@peff.net>
---


Am 28.03.2011 19:00, schrieb Junio C Hamano:
> I think it is Ok to do this (yes I am trying to avoid doing this myself,
> as I am a bit behind and also am lazy) just as a single patch to rename
> the environment variables, and filter them with a single GIT_TEST_*
> pattern at the same time.

Agreed, that would be the best solution. But I got sidetracked by this
issue while trying to fix something else, so I would rather want to
avoid doing the whole exercise myself. So here is v3 of my patch which
just makes these variables work again.


 t/test-lib.sh |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 7cc9a52..7a56f11 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -46,7 +46,16 @@ unset VISUAL
 unset EMAIL
 unset $(perl -e '
 	my @env = keys %ENV;
-	my @vars = grep(/^GIT_/ && !/^GIT_(TRACE|DEBUG|USE_LOOKUP)/, @env);
+	my $ok = join("|", qw(
+		TRACE
+		DEBUG
+		USE_LOOKUP
+		TEST
+		.*_TEST
+		PROVE
+		VALGRIND
+	));
+	my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 	print join("\n", @vars);
 ')
 GIT_AUTHOR_EMAIL=author@example.com
-- 
1.7.4.2.407.g50b80.dirty