git-commit-vandalism/t/t5322-pack-objects-sparse.sh
Eric Sunshine d0fd993137 t5000-t5999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00

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#!/bin/sh
test_description='pack-objects object selection using sparse algorithm'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
test_expect_success 'setup repo' '
test_commit initial &&
for i in $(test_seq 1 3)
do
mkdir f$i &&
for j in $(test_seq 1 3)
do
mkdir f$i/f$j &&
echo $j >f$i/f$j/data.txt || return 1
done
done &&
git add . &&
git commit -m "Initialized trees" &&
for i in $(test_seq 1 3)
do
git checkout -b topic$i main &&
echo change-$i >f$i/f$i/data.txt &&
git commit -a -m "Changed f$i/f$i/data.txt" || return 1
done &&
cat >packinput.txt <<-EOF &&
topic1
^topic2
^topic3
EOF
git rev-parse \
topic1 \
topic1^{tree} \
topic1:f1 \
topic1:f1/f1 \
topic1:f1/f1/data.txt | sort >expect_objects.txt
'
test_expect_success 'non-sparse pack-objects' '
git pack-objects --stdout --revs --no-sparse <packinput.txt >nonsparse.pack &&
git index-pack -o nonsparse.idx nonsparse.pack &&
git show-index <nonsparse.idx | awk "{print \$2}" >nonsparse_objects.txt &&
test_cmp expect_objects.txt nonsparse_objects.txt
'
test_expect_success 'sparse pack-objects' '
git pack-objects --stdout --revs --sparse <packinput.txt >sparse.pack &&
git index-pack -o sparse.idx sparse.pack &&
git show-index <sparse.idx | awk "{print \$2}" >sparse_objects.txt &&
test_cmp expect_objects.txt sparse_objects.txt
'
test_expect_success 'duplicate a folder from f3 and commit to topic1' '
git checkout topic1 &&
echo change-3 >f3/f3/data.txt &&
git commit -a -m "Changed f3/f3/data.txt" &&
git rev-parse \
topic1~1 \
topic1~1^{tree} \
topic1^{tree} \
topic1 \
topic1:f1 \
topic1:f1/f1 \
topic1:f1/f1/data.txt | sort >required_objects.txt
'
test_expect_success 'non-sparse pack-objects' '
git pack-objects --stdout --revs --no-sparse <packinput.txt >nonsparse.pack &&
git index-pack -o nonsparse.idx nonsparse.pack &&
git show-index <nonsparse.idx | awk "{print \$2}" >nonsparse_objects.txt &&
comm -1 -2 required_objects.txt nonsparse_objects.txt >nonsparse_required_objects.txt &&
test_cmp required_objects.txt nonsparse_required_objects.txt
'
test_expect_success 'sparse pack-objects' '
git pack-objects --stdout --revs --sparse <packinput.txt >sparse.pack &&
git index-pack -o sparse.idx sparse.pack &&
git show-index <sparse.idx | awk "{print \$2}" >sparse_objects.txt &&
comm -1 -2 required_objects.txt sparse_objects.txt >sparse_required_objects.txt &&
test_cmp required_objects.txt sparse_required_objects.txt
'
# Demonstrate that the algorithms differ when we copy a tree wholesale
# from one folder to another.
test_expect_success 'duplicate a folder from f1 into f3' '
mkdir f3/f4 &&
cp -r f1/f1/* f3/f4 &&
git add f3/f4 &&
git commit -m "Copied f1/f1 to f3/f4" &&
cat >packinput.txt <<-EOF &&
topic1
^topic1~1
EOF
git rev-parse \
topic1 \
topic1^{tree} \
topic1:f3 | sort >required_objects.txt
'
test_expect_success 'non-sparse pack-objects' '
git pack-objects --stdout --revs --no-sparse <packinput.txt >nonsparse.pack &&
git index-pack -o nonsparse.idx nonsparse.pack &&
git show-index <nonsparse.idx | awk "{print \$2}" >nonsparse_objects.txt &&
comm -1 -2 required_objects.txt nonsparse_objects.txt >nonsparse_required_objects.txt &&
test_cmp required_objects.txt nonsparse_required_objects.txt
'
# --sparse is enabled by default by pack.useSparse
test_expect_success 'sparse pack-objects' '
GIT_TEST_PACK_SPARSE=-1 &&
git rev-parse \
topic1 \
topic1^{tree} \
topic1:f3 \
topic1:f3/f4 \
topic1:f3/f4/data.txt | sort >expect_sparse_objects.txt &&
git pack-objects --stdout --revs <packinput.txt >sparse.pack &&
git index-pack -o sparse.idx sparse.pack &&
git show-index <sparse.idx | awk "{print \$2}" >sparse_objects.txt &&
test_cmp expect_sparse_objects.txt sparse_objects.txt
'
test_expect_success 'pack.useSparse enables algorithm' '
git config pack.useSparse true &&
git pack-objects --stdout --revs <packinput.txt >sparse.pack &&
git index-pack -o sparse.idx sparse.pack &&
git show-index <sparse.idx | awk "{print \$2}" >sparse_objects.txt &&
test_cmp expect_sparse_objects.txt sparse_objects.txt
'
test_expect_success 'pack.useSparse overridden' '
git pack-objects --stdout --revs --no-sparse <packinput.txt >sparse.pack &&
git index-pack -o sparse.idx sparse.pack &&
git show-index <sparse.idx | awk "{print \$2}" >sparse_objects.txt &&
test_cmp required_objects.txt sparse_objects.txt
'
test_done