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[PATCH] test-lib: abort when can't remove trash directory




We had two similar bugs in the tests sporadically triggering error
messages during the removal of the trash directory, see commits
bb05510e5 (t5510: run auto-gc in the foreground, 2016-05-01) and
ef09036cf (t6500: wait for detached auto gc at the end of the test
script, 2017-04-13).  The test script succeeded nonetheless, because
these errors are ignored during housekeeping in 'test_done'.

However, such an error is a sign that something is fishy in the test
script.  Print an error message and abort the test script when the
trash directory can't be removed successfully or is already removed,
because that's unexpected and we woud prefer somebody notice and
figure out why.

Signed-off-by: SZEDER Gábor <szeder.dev@xxxxxxxxx>
---

Note, that the commit message references ef09036cf (t6500: wait for
detached auto gc at the end of the test script, 2017-04-13), which
is still only in 'pu'.

 t/test-lib.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 13b569682..e9e6f677d 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -761,9 +761,12 @@ test_done () {
 			say "1..$test_count$skip_all"
 		fi
 
-		test -d "$remove_trash" &&
+		test -d "$remove_trash" ||
+		error "Tests passed but trash directory already removed before test cleanup; aborting"
+
 		cd "$(dirname "$remove_trash")" &&
-		rm -rf "$(basename "$remove_trash")"
+		rm -rf "$(basename "$remove_trash")" ||
+		error "Tests passed but test cleanup failed; aborting"
 
 		test_at_end_hook_
 
-- 
2.12.2.613.g9c5b79913