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   1 #!/bin/sh
   2
   3 test_description='split commit graph'
   4 . ./test-lib.sh
   5
   6 GIT_TEST_COMMIT_GRAPH=0
   7
   8 test_expect_success 'setup repo' '
   9         git init &&
  10         git config core.commitGraph true &&
  11         infodir=".git/objects/info" &&
  12         graphdir="$infodir/commit-graphs" &&
  13         test_oid_init
  14 '
  15
  16 graph_read_expect() {
  17         NUM_BASE=0
  18         if test ! -z $2
  19         then
  20                 NUM_BASE=$2
  21         fi
  22         cat >expect <<- EOF
  23         header: 43475048 1 1 3 $NUM_BASE
  24         num_commits: $1
  25         chunks: oid_fanout oid_lookup commit_metadata
  26         EOF
  27         git commit-graph read >output &&
  28         test_cmp expect output
  29 }
  30
  31 test_expect_success 'create commits and write commit-graph' '
  32         for i in $(test_seq 3)
  33         do
  34                 test_commit $i &&
  35                 git branch commits/$i || return 1
  36         done &&
  37         git commit-graph write --reachable &&
  38         test_path_is_file $infodir/commit-graph &&
  39         graph_read_expect 3
  40 '
  41
  42 graph_git_two_modes() {
  43         git -c core.commitGraph=true $1 >output
  44         git -c core.commitGraph=false $1 >expect
  45         test_cmp expect output
  46 }
  47
  48 graph_git_behavior() {
  49         MSG=$1
  50         BRANCH=$2
  51         COMPARE=$3
  52         test_expect_success "check normal git operations: $MSG" '
  53                 graph_git_two_modes "log --oneline $BRANCH" &&
  54                 graph_git_two_modes "log --topo-order $BRANCH" &&
  55                 graph_git_two_modes "log --graph $COMPARE..$BRANCH" &&
  56                 graph_git_two_modes "branch -vv" &&
  57                 graph_git_two_modes "merge-base -a $BRANCH $COMPARE"
  58         '
  59 }
  60
  61 graph_git_behavior 'graph exists' commits/3 commits/1
  62
  63 verify_chain_files_exist() {
  64         for hash in $(cat $1/commit-graph-chain)
  65         do
  66                 test_path_is_file $1/graph-$hash.graph || return 1
  67         done
  68 }
  69
  70 test_expect_success 'add more commits, and write a new base graph' '
  71         git reset --hard commits/1 &&
  72         for i in $(test_seq 4 5)
  73         do
  74                 test_commit $i &&
  75                 git branch commits/$i || return 1
  76         done &&
  77         git reset --hard commits/2 &&
  78         for i in $(test_seq 6 10)
  79         do
  80                 test_commit $i &&
  81                 git branch commits/$i || return 1
  82         done &&
  83         git reset --hard commits/2 &&
  84         git merge commits/4 &&
  85         git branch merge/1 &&
  86         git reset --hard commits/4 &&
  87         git merge commits/6 &&
  88         git branch merge/2 &&
  89         git commit-graph write --reachable &&
  90         graph_read_expect 12
  91 '
  92
  93 test_expect_success 'add three more commits, write a tip graph' '
  94         git reset --hard commits/3 &&
  95         git merge merge/1 &&
  96         git merge commits/5 &&
  97         git merge merge/2 &&
  98         git branch merge/3 &&
  99         git commit-graph write --reachable --split &&
 100         test_path_is_missing $infodir/commit-graph &&
 101         test_path_is_file $graphdir/commit-graph-chain &&
 102         ls $graphdir/graph-*.graph >graph-files &&
 103         test_line_count = 2 graph-files &&
 104         verify_chain_files_exist $graphdir
 105 '
 106
 107 graph_git_behavior 'split commit-graph: merge 3 vs 2' merge/3 merge/2
 108
 109 test_expect_success 'add one commit, write a tip graph' '
 110         test_commit 11 &&
 111         git branch commits/11 &&
 112         git commit-graph write --reachable --split &&
 113         test_path_is_missing $infodir/commit-graph &&
 114         test_path_is_file $graphdir/commit-graph-chain &&
 115         ls $graphdir/graph-*.graph >graph-files &&
 116         test_line_count = 3 graph-files &&
 117         verify_chain_files_exist $graphdir
 118 '
 119
 120 graph_git_behavior 'three-layer commit-graph: commit 11 vs 6' commits/11 commits/6
 121
 122 test_done