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git-mirror/t/t0411-clone-from-partial.sh
Derrick Stolee 861d4bc292 pack-objects: introduce GIT_TEST_PACK_PATH_WALK
There are many tests that validate whether 'git pack-objects' works as
expected. Instead of duplicating these tests, add a new test environment
variable, GIT_TEST_PACK_PATH_WALK, that implies --path-walk by default
when specified.

This was useful in testing the implementation of the --path-walk
implementation, helping to find tests that are overly specific to the
default object walk. These include:

 - t0411-clone-from-partial.sh : One test fetches from a repo that does
   not have the boundary objects. This causes the path-based walk to
   fail. Disable the variable for this test.

 - t5306-pack-nobase.sh : Similar to t0411, one test fetches from a repo
   without a boundary object.

 - t5310-pack-bitmaps.sh : One test compares the case when packing with
   bitmaps to the case when packing without them. Since we disable the
   test variable when writing bitmaps, this causes a difference in the
   object list (the --path-walk option adds an extra object). Specify
   --no-path-walk in both processes for the comparison. Another test
   checks for a specific delta base, but when computing dynamically
   without using bitmaps, the base object it too small to be considered
   in the delta calculations so no base is used.

 - t5316-pack-delta-depth.sh : This script cares about certain delta
   choices and their chain lengths. The --path-walk option changes how
   these chains are selected, and thus changes the results of this test.

 - t5322-pack-objects-sparse.sh : This demonstrates the effectiveness of
   the --sparse option and how it combines with --path-walk.

 - t5332-multi-pack-reuse.sh : This test verifies that the preferred
   pack is used for delta reuse when possible. The --path-walk option is
   not currently aware of the preferred pack at all, so finds a
   different delta base.

 - t7406-submodule-update.sh : When using the variable, the --depth
   option collides with the --path-walk feature, resulting in a warning
   message. Disable the variable so this warning does not appear.

I want to call out one specific test change that is only temporary:

 - t5530-upload-pack-error.sh : One test cares specifically about an
   "unable to read" error message. Since the current implementation
   performs delta calculations within the path-walk API callback, a
   different "unable to get size" error message appears. When this
   is changed in a future refactoring, this test change can be reverted.

Similar to GIT_TEST_NAME_HASH_VERSION, we do not add this option to the
linux-TEST-vars CI build as that's already an overloaded build.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-16 12:15:39 -07:00

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#!/bin/sh
test_description='check that local clone does not fetch from promisor remotes'
. ./test-lib.sh
test_expect_success 'create evil repo' '
git init tmp &&
test_commit -C tmp a &&
git -C tmp config uploadpack.allowfilter 1 &&
git clone --filter=blob:none --no-local --no-checkout tmp evil &&
rm -rf tmp &&
git -C evil config remote.origin.uploadpack \"\$TRASH_DIRECTORY/fake-upload-pack\" &&
write_script fake-upload-pack <<-\EOF &&
echo >&2 "fake-upload-pack running"
>"$TRASH_DIRECTORY/script-executed"
exit 1
EOF
export TRASH_DIRECTORY &&
# empty shallow file disables local clone optimization
>evil/.git/shallow
'
test_expect_success 'local clone must not fetch from promisor remote and execute script' '
rm -f script-executed &&
test_must_fail git clone \
--upload-pack="GIT_TEST_ASSUME_DIFFERENT_OWNER=true git-upload-pack" \
evil clone1 2>err &&
test_grep ! "fake-upload-pack running" err &&
test_path_is_missing script-executed
'
test_expect_success 'clone from file://... must not fetch from promisor remote and execute script' '
rm -f script-executed &&
test_must_fail git clone \
--upload-pack="GIT_TEST_ASSUME_DIFFERENT_OWNER=true git-upload-pack" \
"file://$(pwd)/evil" clone2 2>err &&
test_grep ! "fake-upload-pack running" err &&
test_path_is_missing script-executed
'
test_expect_success 'fetch from file://... must not fetch from promisor remote and execute script' '
rm -f script-executed &&
test_must_fail git fetch \
--upload-pack="GIT_TEST_ASSUME_DIFFERENT_OWNER=true git-upload-pack" \
"file://$(pwd)/evil" 2>err &&
test_grep ! "fake-upload-pack running" err &&
test_path_is_missing script-executed
'
test_expect_success 'pack-objects should fetch from promisor remote and execute script' '
rm -f script-executed &&
echo "HEAD" | test_must_fail git -C evil pack-objects --revs --stdout >/dev/null 2>err &&
test_grep "fake-upload-pack running" err &&
test_path_is_file script-executed
'
test_expect_success 'clone from promisor remote does not lazy-fetch by default' '
rm -f script-executed &&
# The --path-walk feature of "git pack-objects" is not
# compatible with this kind of fetch from an incomplete repo.
GIT_TEST_PACK_PATH_WALK=0 &&
export GIT_TEST_PACK_PATH_WALK &&
test_must_fail git clone evil no-lazy 2>err &&
test_grep "lazy fetching disabled" err &&
test_path_is_missing script-executed
'
test_expect_success 'promisor lazy-fetching can be re-enabled' '
rm -f script-executed &&
test_must_fail env GIT_NO_LAZY_FETCH=0 \
git clone evil lazy-ok 2>err &&
test_grep "fake-upload-pack running" err &&
test_path_is_file script-executed
'
test_done