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sparse-index: check index conversion happens 

Add a test case that uses test_region to ensure that we are truly
expanding a sparse index to a full one, then converting back to sparse
when writing the index. As we integrate more Git commands with the
sparse index, we will convert these commands to check that we do _not_
convert the sparse index to a full index and instead stay sparse the
entire time.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2021-03-30 13:10:58 +00:00 committed by Junio C Hamano
parent 13e1331247
commit 0938e6ff55
1 changed files with 18 additions and 0 deletions
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18
t/t1092-sparse-checkout-compatibility.sh
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@ -393,4 +393,22 @@ test_expect_success 'submodule handling' '
grep "160000 commit $(git -C initial-repo rev-parse HEAD) modules/sub" cache
'
test_expect_success 'sparse-index is expanded and converted back' '
init_repos &&
(
GIT_TEST_SPARSE_INDEX=1 &&
export GIT_TEST_SPARSE_INDEX &&
GIT_TRACE2_EVENT="$(pwd)/trace2.txt" GIT_TRACE2_EVENT_NESTING=10 \
git -C sparse-index -c core.fsmonitor="" reset --hard &&
test_region index convert_to_sparse trace2.txt &&
test_region index ensure_full_index trace2.txt &&
rm trace2.txt &&
GIT_TRACE2_EVENT="$(pwd)/trace2.txt" GIT_TRACE2_EVENT_NESTING=10 \
git -C sparse-index -c core.fsmonitor="" status -uno &&
test_region index ensure_full_index trace2.txt
)
'
test_done