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-rwxr-xr-xt/t7701-repack-unpack-unreachable.sh156
1 files changed, 156 insertions, 0 deletions
diff --git a/t/t7701-repack-unpack-unreachable.sh b/t/t7701-repack-unpack-unreachable.sh
new file mode 100755
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+++ b/t/t7701-repack-unpack-unreachable.sh
@@ -0,0 +1,156 @@
+#!/bin/sh
+
+test_description='git repack works correctly'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+fsha1=
+csha1=
+tsha1=
+
+test_expect_success '-A with -d option leaves unreachable objects unpacked' '
+ echo content > file1 &&
+ git add . &&
+ test_tick &&
+ git commit -m initial_commit &&
+ # create a transient branch with unique content
+ git checkout -b transient_branch &&
+ echo more content >> file1 &&
+ # record the objects created in the database for file, commit, tree
+ fsha1=$(git hash-object file1) &&
+ test_tick &&
+ git commit -a -m more_content &&
+ csha1=$(git rev-parse HEAD^{commit}) &&
+ tsha1=$(git rev-parse HEAD^{tree}) &&
+ git checkout main &&
+ echo even more content >> file1 &&
+ test_tick &&
+ git commit -a -m even_more_content &&
+ # delete the transient branch
+ git branch -D transient_branch &&
+ # pack the repo
+ git repack -A -d -l &&
+ # verify objects are packed in repository
+ test 3 = $(git verify-pack -v -- .git/objects/pack/*.idx |
+ grep -E "^($fsha1|$csha1|$tsha1) " |
+ sort | uniq | wc -l) &&
+ git show $fsha1 &&
+ git show $csha1 &&
+ git show $tsha1 &&
+ # now expire the reflog, while keeping reachable ones but expiring
+ # unreachables immediately
+ test_tick &&
+ sometimeago=$(( $test_tick - 10000 )) &&
+ git reflog expire --expire=$sometimeago --expire-unreachable=$test_tick --all &&
+ # and repack
+ git repack -A -d -l &&
+ # verify objects are retained unpacked
+ test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
+ grep -E "^($fsha1|$csha1|$tsha1) " |
+ sort | uniq | wc -l) &&
+ git show $fsha1 &&
+ git show $csha1 &&
+ git show $tsha1
+'
+
+compare_mtimes ()
+{
+ read tref &&
+ while read t; do
+ test "$tref" = "$t" || return 1
+ done
+}
+
+test_expect_success '-A without -d option leaves unreachable objects packed' '
+ fsha1path=$(echo "$fsha1" | sed -e "s|\(..\)|\1/|") &&
+ fsha1path=".git/objects/$fsha1path" &&
+ csha1path=$(echo "$csha1" | sed -e "s|\(..\)|\1/|") &&
+ csha1path=".git/objects/$csha1path" &&
+ tsha1path=$(echo "$tsha1" | sed -e "s|\(..\)|\1/|") &&
+ tsha1path=".git/objects/$tsha1path" &&
+ git branch transient_branch $csha1 &&
+ git repack -a -d -l &&
+ test ! -f "$fsha1path" &&
+ test ! -f "$csha1path" &&
+ test ! -f "$tsha1path" &&
+ test 1 = $(ls -1 .git/objects/pack/pack-*.pack | wc -l) &&
+ packfile=$(ls .git/objects/pack/pack-*.pack) &&
+ git branch -D transient_branch &&
+ test_tick &&
+ git repack -A -l &&
+ test ! -f "$fsha1path" &&
+ test ! -f "$csha1path" &&
+ test ! -f "$tsha1path" &&
+ git show $fsha1 &&
+ git show $csha1 &&
+ git show $tsha1
+'
+
+test_expect_success 'unpacked objects receive timestamp of pack file' '
+ tmppack=".git/objects/pack/tmp_pack" &&
+ ln "$packfile" "$tmppack" &&
+ git repack -A -l -d &&
+ test-tool chmtime --get "$tmppack" "$fsha1path" "$csha1path" "$tsha1path" \
+ > mtimes &&
+ compare_mtimes < mtimes
+'
+
+test_expect_success 'do not bother loosening old objects' '
+ obj1=$(echo one | git hash-object -w --stdin) &&
+ obj2=$(echo two | git hash-object -w --stdin) &&
+ pack1=$(echo $obj1 | git pack-objects .git/objects/pack/pack) &&
+ pack2=$(echo $obj2 | git pack-objects .git/objects/pack/pack) &&
+ git prune-packed &&
+ git cat-file -p $obj1 &&
+ git cat-file -p $obj2 &&
+ test-tool chmtime =-86400 .git/objects/pack/pack-$pack2.pack &&
+ git repack -A -d --unpack-unreachable=1.hour.ago &&
+ git cat-file -p $obj1 &&
+ test_must_fail git cat-file -p $obj2
+'
+
+test_expect_success 'keep packed objects found only in index' '
+ echo my-unique-content >file &&
+ git add file &&
+ git commit -m "make it reachable" &&
+ git gc &&
+ git reset HEAD^ &&
+ git reflog expire --expire=now --all &&
+ git add file &&
+ test-tool chmtime =-86400 .git/objects/pack/* &&
+ git gc --prune=1.hour.ago &&
+ git cat-file blob :file
+'
+
+test_expect_success 'repack -k keeps unreachable packed objects' '
+ # create packed-but-unreachable object
+ sha1=$(echo unreachable-packed | git hash-object -w --stdin) &&
+ pack=$(echo $sha1 | git pack-objects .git/objects/pack/pack) &&
+ git prune-packed &&
+
+ # -k should keep it
+ git repack -adk &&
+ git cat-file -p $sha1 &&
+
+ # and double check that without -k it would have been removed
+ git repack -ad &&
+ test_must_fail git cat-file -p $sha1
+'
+
+test_expect_success 'repack -k packs unreachable loose objects' '
+ # create loose unreachable object
+ sha1=$(echo would-be-deleted-loose | git hash-object -w --stdin) &&
+ objpath=.git/objects/$(echo $sha1 | sed "s,..,&/,") &&
+ test_path_is_file $objpath &&
+
+ # and confirm that the loose object goes away, but we can
+ # still access it (ergo, it is packed)
+ git repack -adk &&
+ test_path_is_missing $objpath &&
+ git cat-file -p $sha1
+'
+
+test_done