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