Every once in a while a test somehow manages to escape from its trash directory and modifies the surrounding repository, whether because of a bug in git itself, a bug in a test [1], or e.g. when trying to run tests with a shell that is, in general, unable to run our tests [2]. Set GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." as an additional safety measure to protect the surrounding repository at least from modifications by git commands executed in the tests (assuming that handling of ceiling directories during repository discovery is not broken, and, of course, it won't save us from regular shell commands, e.g. 'cd .. && rm -f ...'). [1] e.g. https://public-inbox.org/git/20210423051255.GD2947267@xxxxxxxxxx [2] $ git symbolic-ref HEAD refs/heads/master $ ksh ./t2011-checkout-invalid-head.sh [... a lot of "not ok" ...] $ git symbolic-ref HEAD refs/heads/other (In short: 'ksh' doesn't support the 'local' builtin command, which is used by 'test_oid', causing it to return with error whenever it's called, leaving ZERO_OID set to empty, so when the test 'checkout main from invalid HEAD' runs 'echo $ZERO_OID >.git/HEAD' it writes a corrupt (not invalid) HEAD, and subsequent git commands don't recognize the repository in the trash directory anymore, but operate on the surrounding repo.) Signed-off-by: SZEDER Gábor <szeder.dev@xxxxxxxxx> --- Changes since v1: - Set "$TRASH_DIRECTORY/.." instead of $GIT_BUILD_DIR. - Minor commit message tweaks. t/test-lib.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/t/test-lib.sh b/t/test-lib.sh index abcfbed6d6..fc1e521519 100644 --- a/t/test-lib.sh +++ b/t/test-lib.sh @@ -1343,7 +1343,8 @@ fi GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt GIT_CONFIG_NOSYSTEM=1 GIT_ATTR_NOSYSTEM=1 -export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM +GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." +export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES if test -z "$GIT_TEST_CMP" then -- 2.33.0.361.g6f8e582daa
