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Re: [PATCH] test-lib: whitelist GIT_TR2_* in the environment






On 3/30/2019 3:51 AM, Ævar Arnfjörð Bjarmason wrote:
Add GIT_TR2_* to the whitelist of environment variables that we don't
clear when running the test suite.

This allows us to use the test suite to produce trace2 test data,
which is handy to e.g. write consumers that collate the trace data
itself.

One caveat here is that we produce trace output for not *just* the
tests, but also e.g. from this line in test-lib.sh:

     # It appears that people try to run tests without building...
     "${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" >/dev/null
     [...]

I consider this not just OK but a feature. Let's log *all* the git
commands we're going to execute, not just those within
test_expect_*().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
  t/test-lib.sh | 1 +
  1 file changed, 1 insertion(+)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 562c57e685..f6318c54c9 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -379,6 +379,7 @@ unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  	my @env = keys %ENV;
  	my $ok = join("|", qw(
  		TRACE
+		TR2_
  		DEBUG
  		TEST
  		.*_TEST


I could go either way on this one.  It would be nice to have
telemetry for all of the commands run by the suite (and especially
for perf tests) for our developer analysis purposes.  But if your
settings have you route that data to a DB, your DBA might not be
happy with you....

Jeff