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t1302: make tests more robust with new extensions

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In t1302 we exercise logic around "core.repositoryFormatVersion" and
extensions. These tests are not particularly robust against extensions
like the newly introduced "refStorage" extension as we tend to clobber
the repository's config file. We thus overwrite any extensions that were
set, which may render the repository inaccessible in case it has to be
accessed with a non-default ref storage.

Refactor the tests to be more robust:

  - Check the DEFAULT_REPO_FORMAT prereq to determine the expected
    repository format version. This helps to ensure that we only need to
    update the prereq in a central place when new extensions are added.
    Furthermore, this allows us to stop seeding the now-unneeded object
    ID cache that was only used to figure out the repository version.

  - Use a separate repository to rewrite ".git/config" to test
    combinations of the repository format version and extensions. This
    ensures that we don't break the main test repository. While we could
    rewrite these tests to not overwrite preexisting extensions, it
    feels cleaner like this so that we can test extensions standalone
    without interference from the environment.

  - Do not rewrite ".git/config" when exercising the "preciousObjects"
    extension.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Reviewed-by: Christian Couder <christian.couder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-01-29 12:07:26 +01:00 committed by Junio C Hamano
parent 1f83e752c5
commit afb99327d0
1 changed files with 15 additions and 8 deletions
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23
t/t1302-repo-version.sh
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@ -9,10 +9,6 @@ TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
test_oid_cache <<-\EOF &&
version sha1:0
version sha256:1
EOF
cat >test.patch <<-\EOF &&
diff --git a/test.txt b/test.txt
new file mode 100644
@ -28,7 +24,12 @@ test_expect_success 'setup' '
'
test_expect_success 'gitdir selection on normal repos' '
test_oid version >expect &&
if test_have_prereq DEFAULT_REPO_FORMAT
then
echo 0
else
echo 1
fi >expect &&
git config core.repositoryformatversion >actual &&
git -C test config core.repositoryformatversion >actual2 &&
test_cmp expect actual &&
@ -79,8 +80,13 @@ mkconfig () {
while read outcome version extensions; do
test_expect_success "$outcome version=$version $extensions" "
mkconfig $version $extensions >.git/config &&
check_${outcome}
test_when_finished 'rm -rf extensions' &&
git init extensions &&
(
cd extensions &&
mkconfig $version $extensions >.git/config &&
check_${outcome}
)
"
done <<\EOF
allow 0
@ -94,7 +100,8 @@ allow 1 noop-v1
EOF
test_expect_success 'precious-objects allowed' '
mkconfig 1 preciousObjects >.git/config &&
git config core.repositoryFormatVersion 1 &&
git config extensions.preciousObjects 1 &&
check_allow
'