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git/t/t1302-repo-version.sh
Patrick Steinhardt afb99327d0 t1302: make tests more robust with new extensions
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>
2024-01-29 13:54:32 -08:00

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#!/bin/sh
#
# Copyright (c) 2007 Nguyễn Thái Ngọc Duy
#
test_description='Test repository version check'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
cat >test.patch <<-\EOF &&
diff --git a/test.txt b/test.txt
new file mode 100644
--- /dev/null
+++ b/test.txt
@@ -0,0 +1 @@
+123
EOF
test_create_repo "test" &&
test_create_repo "test2" &&
git config --file=test2/.git/config core.repositoryformatversion 99
'
test_expect_success 'gitdir selection on normal repos' '
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 &&
test_cmp expect actual2
'
test_expect_success 'gitdir selection on unsupported repo' '
# Make sure it would stop at test2, not trash
test_expect_code 1 git -C test2 config core.repositoryformatversion
'
test_expect_success 'gitdir not required mode' '
git apply --stat test.patch &&
git -C test apply --stat ../test.patch &&
git -C test2 apply --stat ../test.patch
'
test_expect_success 'gitdir required mode' '
git apply --check --index test.patch &&
git -C test apply --check --index ../test.patch &&
test_must_fail git -C test2 apply --check --index ../test.patch
'
check_allow () {
git rev-parse --git-dir >actual &&
echo .git >expect &&
test_cmp expect actual
}
check_abort () {
test_must_fail git rev-parse --git-dir
}
# avoid git-config, since it cannot be trusted to run
# in a repository with a broken version
mkconfig () {
echo '[core]' &&
echo "repositoryformatversion = $1" &&
shift &&
if test $# -gt 0; then
echo '[extensions]' &&
for i in "$@"; do
echo "$i"
done
fi
}
while read outcome version extensions; do
test_expect_success "$outcome version=$version $extensions" "
test_when_finished 'rm -rf extensions' &&
git init extensions &&
(
cd extensions &&
mkconfig $version $extensions >.git/config &&
check_${outcome}
)
"
done <<\EOF
allow 0
allow 1
allow 1 noop
abort 1 no-such-extension
allow 0 no-such-extension
allow 0 noop
abort 0 noop-v1
allow 1 noop-v1
EOF
test_expect_success 'precious-objects allowed' '
git config core.repositoryFormatVersion 1 &&
git config extensions.preciousObjects 1 &&
check_allow
'
test_expect_success 'precious-objects blocks destructive repack' '
test_must_fail git repack -ad
'
test_expect_success 'other repacks are OK' '
test_commit foo &&
git repack
'
test_expect_success 'precious-objects blocks prune' '
test_must_fail git prune
'
test_expect_success 'gc runs without complaint' '
git gc
'
test_done