diff options
Diffstat (limited to 't/t5324-split-commit-graph.sh')
| -rwxr-xr-x | t/t5324-split-commit-graph.sh | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/t/t5324-split-commit-graph.sh b/t/t5324-split-commit-graph.sh new file mode 100755 index 0000000000..269d0964a3 --- /dev/null +++ b/t/t5324-split-commit-graph.sh @@ -0,0 +1,428 @@ +#!/bin/sh + +test_description='split commit graph' +. ./test-lib.sh + +GIT_TEST_COMMIT_GRAPH=0 +GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=0 + +test_expect_success 'setup repo' ' + git init && + git config core.commitGraph true && + git config gc.writeCommitGraph false && + infodir=".git/objects/info" && + graphdir="$infodir/commit-graphs" && + test_oid_init && + test_oid_cache <<-EOM + shallow sha1:1760 + shallow sha256:2064 + + base sha1:1376 + base sha256:1496 + EOM +' + +graph_read_expect() { + NUM_BASE=0 + if test ! -z $2 + then + NUM_BASE=$2 + fi + cat >expect <<- EOF + header: 43475048 1 1 3 $NUM_BASE + num_commits: $1 + chunks: oid_fanout oid_lookup commit_metadata + EOF + test-tool read-graph >output && + test_cmp expect output +} + +test_expect_success POSIXPERM 'tweak umask for modebit tests' ' + umask 022 +' + +test_expect_success 'create commits and write commit-graph' ' + for i in $(test_seq 3) + do + test_commit $i && + git branch commits/$i || return 1 + done && + git commit-graph write --reachable && + test_path_is_file $infodir/commit-graph && + graph_read_expect 3 +' + +graph_git_two_modes() { + git -c core.commitGraph=true $1 >output + git -c core.commitGraph=false $1 >expect + test_cmp expect output +} + +graph_git_behavior() { + MSG=$1 + BRANCH=$2 + COMPARE=$3 + test_expect_success "check normal git operations: $MSG" ' + graph_git_two_modes "log --oneline $BRANCH" && + graph_git_two_modes "log --topo-order $BRANCH" && + graph_git_two_modes "log --graph $COMPARE..$BRANCH" && + graph_git_two_modes "branch -vv" && + graph_git_two_modes "merge-base -a $BRANCH $COMPARE" + ' +} + +graph_git_behavior 'graph exists' commits/3 commits/1 + +verify_chain_files_exist() { + for hash in $(cat $1/commit-graph-chain) + do + test_path_is_file $1/graph-$hash.graph || return 1 + done +} + +test_expect_success 'add more commits, and write a new base graph' ' + git reset --hard commits/1 && + for i in $(test_seq 4 5) + do + test_commit $i && + git branch commits/$i || return 1 + done && + git reset --hard commits/2 && + for i in $(test_seq 6 10) + do + test_commit $i && + git branch commits/$i || return 1 + done && + git reset --hard commits/2 && + git merge commits/4 && + git branch merge/1 && + git reset --hard commits/4 && + git merge commits/6 && + git branch merge/2 && + git commit-graph write --reachable && + graph_read_expect 12 +' + +test_expect_success 'fork and fail to base a chain on a commit-graph file' ' + test_when_finished rm -rf fork && + git clone . fork && + ( + cd fork && + rm .git/objects/info/commit-graph && + echo "$(pwd)/../.git/objects" >.git/objects/info/alternates && + test_commit new-commit && + git commit-graph write --reachable --split && + test_path_is_file $graphdir/commit-graph-chain && + test_line_count = 1 $graphdir/commit-graph-chain && + verify_chain_files_exist $graphdir + ) +' + +test_expect_success 'add three more commits, write a tip graph' ' + git reset --hard commits/3 && + git merge merge/1 && + git merge commits/5 && + git merge merge/2 && + git branch merge/3 && + git commit-graph write --reachable --split && + test_path_is_missing $infodir/commit-graph && + test_path_is_file $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 2 graph-files && + verify_chain_files_exist $graphdir +' + +graph_git_behavior 'split commit-graph: merge 3 vs 2' merge/3 merge/2 + +test_expect_success 'add one commit, write a tip graph' ' + test_commit 11 && + git branch commits/11 && + git commit-graph write --reachable --split && + test_path_is_missing $infodir/commit-graph && + test_path_is_file $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 3 graph-files && + verify_chain_files_exist $graphdir +' + +graph_git_behavior 'three-layer commit-graph: commit 11 vs 6' commits/11 commits/6 + +test_expect_success 'add one commit, write a merged graph' ' + test_commit 12 && + git branch commits/12 && + git commit-graph write --reachable --split && + test_path_is_file $graphdir/commit-graph-chain && + test_line_count = 2 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 2 graph-files && + verify_chain_files_exist $graphdir +' + +graph_git_behavior 'merged commit-graph: commit 12 vs 6' commits/12 commits/6 + +test_expect_success 'create fork and chain across alternate' ' + git clone . fork && + ( + cd fork && + git config core.commitGraph true && + rm -rf $graphdir && + echo "$(pwd)/../.git/objects" >.git/objects/info/alternates && + test_commit 13 && + git branch commits/13 && + git commit-graph write --reachable --split && + test_path_is_file $graphdir/commit-graph-chain && + test_line_count = 3 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files && + git -c core.commitGraph=true rev-list HEAD >expect && + git -c core.commitGraph=false rev-list HEAD >actual && + test_cmp expect actual && + test_commit 14 && + git commit-graph write --reachable --split --object-dir=.git/objects/ && + test_line_count = 3 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files + ) +' + +graph_git_behavior 'alternate: commit 13 vs 6' commits/13 commits/6 + +test_expect_success 'test merge stragety constants' ' + git clone . merge-2 && + ( + cd merge-2 && + git config core.commitGraph true && + test_line_count = 2 $graphdir/commit-graph-chain && + test_commit 14 && + git commit-graph write --reachable --split --size-multiple=2 && + test_line_count = 3 $graphdir/commit-graph-chain + + ) && + git clone . merge-10 && + ( + cd merge-10 && + git config core.commitGraph true && + test_line_count = 2 $graphdir/commit-graph-chain && + test_commit 14 && + git commit-graph write --reachable --split --size-multiple=10 && + test_line_count = 1 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files + ) && + git clone . merge-10-expire && + ( + cd merge-10-expire && + git config core.commitGraph true && + test_line_count = 2 $graphdir/commit-graph-chain && + test_commit 15 && + touch $graphdir/to-delete.graph $graphdir/to-keep.graph && + test-tool chmtime =1546362000 $graphdir/to-delete.graph && + test-tool chmtime =1546362001 $graphdir/to-keep.graph && + git commit-graph write --reachable --split --size-multiple=10 \ + --expire-time="2019-01-01 12:00 -05:00" && + test_line_count = 1 $graphdir/commit-graph-chain && + test_path_is_missing $graphdir/to-delete.graph && + test_path_is_file $graphdir/to-keep.graph && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 3 graph-files + ) && + git clone --no-hardlinks . max-commits && + ( + cd max-commits && + git config core.commitGraph true && + test_line_count = 2 $graphdir/commit-graph-chain && + test_commit 16 && + test_commit 17 && + git commit-graph write --reachable --split --max-commits=1 && + test_line_count = 1 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files + ) +' + +test_expect_success 'remove commit-graph-chain file after flattening' ' + git clone . flatten && + ( + cd flatten && + test_line_count = 2 $graphdir/commit-graph-chain && + git commit-graph write --reachable && + test_path_is_missing $graphdir/commit-graph-chain && + ls $graphdir >graph-files && + test_line_count = 0 graph-files + ) +' + +corrupt_file() { + file=$1 + pos=$2 + data="${3:-\0}" + chmod a+w "$file" && + printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc +} + +test_expect_success 'verify hashes along chain, even in shallow' ' + git clone --no-hardlinks . verify && + ( + cd verify && + git commit-graph verify && + base_file=$graphdir/graph-$(head -n 1 $graphdir/commit-graph-chain).graph && + corrupt_file "$base_file" $(test_oid shallow) "\01" && + test_must_fail git commit-graph verify --shallow 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "incorrect checksum" err + ) +' + +test_expect_success 'verify --shallow does not check base contents' ' + git clone --no-hardlinks . verify-shallow && + ( + cd verify-shallow && + git commit-graph verify && + base_file=$graphdir/graph-$(head -n 1 $graphdir/commit-graph-chain).graph && + corrupt_file "$base_file" 1000 "\01" && + git commit-graph verify --shallow && + test_must_fail git commit-graph verify 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "incorrect checksum" err + ) +' + +test_expect_success 'warn on base graph chunk incorrect' ' + git clone --no-hardlinks . base-chunk && + ( + cd base-chunk && + git commit-graph verify && + base_file=$graphdir/graph-$(tail -n 1 $graphdir/commit-graph-chain).graph && + corrupt_file "$base_file" $(test_oid base) "\01" && + git commit-graph verify --shallow 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "commit-graph chain does not match" err + ) +' + +test_expect_success 'verify after commit-graph-chain corruption' ' + git clone --no-hardlinks . verify-chain && + ( + cd verify-chain && + corrupt_file "$graphdir/commit-graph-chain" 60 "G" && + git commit-graph verify 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "invalid commit-graph chain" err && + corrupt_file "$graphdir/commit-graph-chain" 60 "A" && + git commit-graph verify 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "unable to find all commit-graph files" err + ) +' + +test_expect_success 'verify across alternates' ' + git clone --no-hardlinks . verify-alt && + ( + cd verify-alt && + rm -rf $graphdir && + altdir="$(pwd)/../.git/objects" && + echo "$altdir" >.git/objects/info/alternates && + git commit-graph verify --object-dir="$altdir/" && + test_commit extra && + git commit-graph write --reachable --split && + tip_file=$graphdir/graph-$(tail -n 1 $graphdir/commit-graph-chain).graph && + corrupt_file "$tip_file" 100 "\01" && + test_must_fail git commit-graph verify --shallow 2>test_err && + grep -v "^+" test_err >err && + test_i18ngrep "commit-graph has incorrect fanout value" err + ) +' + +test_expect_success 'add octopus merge' ' + git reset --hard commits/10 && + git merge commits/3 commits/4 && + git branch merge/octopus && + git commit-graph write --reachable --split && + git commit-graph verify --progress 2>err && + test_line_count = 3 err && + test_i18ngrep ! warning err && + test_line_count = 3 $graphdir/commit-graph-chain +' + +graph_git_behavior 'graph exists' merge/octopus commits/12 + +test_expect_success 'split across alternate where alternate is not split' ' + git commit-graph write --reachable && + test_path_is_file .git/objects/info/commit-graph && + cp .git/objects/info/commit-graph . && + git clone --no-hardlinks . alt-split && + ( + cd alt-split && + rm -f .git/objects/info/commit-graph && + echo "$(pwd)"/../.git/objects >.git/objects/info/alternates && + test_commit 18 && + git commit-graph write --reachable --split && + test_line_count = 1 $graphdir/commit-graph-chain + ) && + test_cmp commit-graph .git/objects/info/commit-graph +' + +test_expect_success '--split=no-merge always writes an incremental' ' + test_when_finished rm -rf a b && + rm -rf $graphdir $infodir/commit-graph && + git reset --hard commits/2 && + git rev-list HEAD~1 >a && + git rev-list HEAD >b && + git commit-graph write --split --stdin-commits <a && + git commit-graph write --split=no-merge --stdin-commits <b && + test_line_count = 2 $graphdir/commit-graph-chain +' + +test_expect_success '--split=replace replaces the chain' ' + rm -rf $graphdir $infodir/commit-graph && + git reset --hard commits/3 && + git rev-list -1 HEAD~2 >a && + git rev-list -1 HEAD~1 >b && + git rev-list -1 HEAD >c && + git commit-graph write --split=no-merge --stdin-commits <a && + git commit-graph write --split=no-merge --stdin-commits <b && + git commit-graph write --split=no-merge --stdin-commits <c && + test_line_count = 3 $graphdir/commit-graph-chain && + git commit-graph write --stdin-commits --split=replace <b && + test_path_is_missing $infodir/commit-graph && + test_path_is_file $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files && + verify_chain_files_exist $graphdir && + graph_read_expect 2 +' + +test_expect_success ULIMIT_FILE_DESCRIPTORS 'handles file descriptor exhaustion' ' + git init ulimit && + ( + cd ulimit && + for i in $(test_seq 64) + do + test_commit $i && + test_might_fail run_with_limited_open_files git commit-graph write \ + --split=no-merge --reachable || return 1 + done + ) +' + +while read mode modebits +do + test_expect_success POSIXPERM "split commit-graph respects core.sharedrepository $mode" ' + rm -rf $graphdir $infodir/commit-graph && + git reset --hard commits/1 && + test_config core.sharedrepository "$mode" && + git commit-graph write --split --reachable && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files && + echo "$modebits" >expect && + test_modebits $graphdir/graph-*.graph >actual && + test_cmp expect actual && + test_modebits $graphdir/commit-graph-chain >actual && + test_cmp expect actual + ' +done <<\EOF +0666 -r--r--r-- +0600 -r-------- +EOF + +test_done |