Re: [PATCHv2 13/13] t: add test harness for external credential helpers

[Jeff King <peff@peff.net>]

On Tue, Dec 06, 2011 at 01:51:43PM -0800, Junio C Hamano wrote:

> Jeff King <peff@peff.net> writes:
> 
> > diff --git a/t/t0303-credential-external.sh b/t/t0303-credential-external.sh
> > new file mode 100755
> > index 0000000..79b046f
> > --- /dev/null
> > +++ b/t/t0303-credential-external.sh
> > @@ -0,0 +1,23 @@
> > ...
> > +else
> > +	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER"
> > +	helper_test "$GIT_TEST_CREDENTIAL_HELPER"
> > +#	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER"
> > +fi
> 
> Huh? Leftover debugging cruft?

Oops, yes. It should be:

  clean
  do_the_test
  clean

The first clean is "remove any cruft accidentally leftover from a
previous run, so we can do our test". The second clean is "be a good
citizen and get rid of cruft we just accumulated".

As part of my testing, I commented out the second clean momentarily so
that I could verify that the cruft was left without the clean, but gone
with the clean. And then I accidentally committed with the "#" left in.

Here's the correct version, with some extra comments about the
clean-test-clean cycle:

-- >8 --
Subject: [PATCHv2 13/13] t: add test harness for external credential helpers

We already have tests for the internal helpers, but it's
nice to give authors of external tools an easy way to
sanity-check their helpers.

If you have written the "git-credential-foo" helper, you can
do so with:

  GIT_TEST_CREDENTIAL_HELPER=foo \
  make t0303-credential-external.sh

This assumes that your helper is capable of both storing and
retrieving credentials (some helpers may be read-only, and
they will fail these tests).

If your helper supports time-based expiration with a
configurable timeout, you can test that feature like this:

  GIT_TEST_CREDENTIAL_HELPER_TIMEOUT="foo --timeout=1" \
  make t0303-credential-external.sh

Signed-off-by: Jeff King <peff@peff.net>
---
 t/t0303-credential-external.sh |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)
 create mode 100755 t/t0303-credential-external.sh

diff --git a/t/t0303-credential-external.sh b/t/t0303-credential-external.sh
new file mode 100755
index 0000000..092dd3c
--- /dev/null
+++ b/t/t0303-credential-external.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+test_description='external credential helper tests'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-credential.sh
+
+if test -z "$GIT_TEST_CREDENTIAL_HELPER"; then
+	say "# skipping external helper tests (set GIT_TEST_CREDENTIAL_HELPER)"
+else
+	# clean before the test in case there is cruft left
+	# over from a previous run that would impact results
+	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER"
+
+	helper_test "$GIT_TEST_CREDENTIAL_HELPER"
+
+	# then clean afterwards so that we are good citizens
+	# and don't leave cruft in the helper's storage, which
+	# might be long-term system storage
+	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER"
+fi
+
+if test -z "$GIT_TEST_CREDENTIAL_HELPER_TIMEOUT"; then
+	say "# skipping external helper timeout tests"
+else
+	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER_TIMEOUT"
+	helper_test_timeout "$GIT_TEST_CREDENTIAL_HELPER_TIMEOUT"
+	helper_test_clean "$GIT_TEST_CREDENTIAL_HELPER_TIMEOUT"
+fi
+
+test_done
-- 
1.7.8.rc2.8.gf076c