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-rwxr-xr-xt/t5318-commit-graph.sh224
1 files changed, 224 insertions, 0 deletions
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
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+#!/bin/sh
+
+test_description='commit graph'
+. ./test-lib.sh
+
+test_expect_success 'setup full repo' '
+ mkdir full &&
+ cd "$TRASH_DIRECTORY/full" &&
+ git init &&
+ git config core.commitGraph true &&
+ objdir=".git/objects"
+'
+
+test_expect_success 'write graph with no packs' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git commit-graph write --object-dir . &&
+ test_path_is_file info/commit-graph
+'
+
+test_expect_success 'create commits and repack' '
+ cd "$TRASH_DIRECTORY/full" &&
+ for i in $(test_seq 3)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ done &&
+ git repack
+'
+
+graph_git_two_modes() {
+ git -c core.graph=true $1 >output
+ git -c core.graph=false $1 >expect
+ test_cmp output expect
+}
+
+graph_git_behavior() {
+ MSG=$1
+ DIR=$2
+ BRANCH=$3
+ COMPARE=$4
+ test_expect_success "check normal git operations: $MSG" '
+ cd "$TRASH_DIRECTORY/$DIR" &&
+ 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 'no graph' full commits/3 commits/1
+
+graph_read_expect() {
+ OPTIONAL=""
+ NUM_CHUNKS=3
+ if test ! -z $2
+ then
+ OPTIONAL=" $2"
+ NUM_CHUNKS=$((3 + $(echo "$2" | wc -w)))
+ fi
+ cat >expect <<- EOF
+ header: 43475048 1 1 $NUM_CHUNKS 0
+ num_commits: $1
+ chunks: oid_fanout oid_lookup commit_metadata$OPTIONAL
+ EOF
+ git commit-graph read >output &&
+ test_cmp expect output
+}
+
+test_expect_success 'write graph' '
+ cd "$TRASH_DIRECTORY/full" &&
+ graph1=$(git commit-graph write) &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "3"
+'
+
+graph_git_behavior 'graph exists' full commits/3 commits/1
+
+test_expect_success 'Add more commits' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git reset --hard commits/1 &&
+ for i in $(test_seq 4 5)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ done &&
+ git reset --hard commits/2 &&
+ for i in $(test_seq 6 7)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ 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 reset --hard commits/3 &&
+ git merge commits/5 commits/7 &&
+ git branch merge/3 &&
+ git repack
+'
+
+# Current graph structure:
+#
+# __M3___
+# / | \
+# 3 M1 5 M2 7
+# |/ \|/ \|
+# 2 4 6
+# |___/____/
+# 1
+
+test_expect_success 'write graph with merges' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git commit-graph write &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "10" "large_edges"
+'
+
+graph_git_behavior 'merge 1 vs 2' full merge/1 merge/2
+graph_git_behavior 'merge 1 vs 3' full merge/1 merge/3
+graph_git_behavior 'merge 2 vs 3' full merge/2 merge/3
+
+test_expect_success 'Add one more commit' '
+ cd "$TRASH_DIRECTORY/full" &&
+ test_commit 8 &&
+ git branch commits/8 &&
+ ls $objdir/pack | grep idx >existing-idx &&
+ git repack &&
+ ls $objdir/pack| grep idx | grep -v --file=existing-idx >new-idx
+'
+
+# Current graph structure:
+#
+# 8
+# |
+# __M3___
+# / | \
+# 3 M1 5 M2 7
+# |/ \|/ \|
+# 2 4 6
+# |___/____/
+# 1
+
+graph_git_behavior 'mixed mode, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'mixed mode, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'write graph with new commit' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git commit-graph write &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "11" "large_edges"
+'
+
+graph_git_behavior 'full graph, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'full graph, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'write graph with nothing new' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git commit-graph write &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "11" "large_edges"
+'
+
+graph_git_behavior 'cleared graph, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'cleared graph, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'build graph from latest pack with closure' '
+ cd "$TRASH_DIRECTORY/full" &&
+ cat new-idx | git commit-graph write --stdin-packs &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "9" "large_edges"
+'
+
+graph_git_behavior 'graph from pack, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'graph from pack, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'build graph from commits with closure' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git tag -a -m "merge" tag/merge merge/2 &&
+ git rev-parse tag/merge >commits-in &&
+ git rev-parse merge/1 >>commits-in &&
+ cat commits-in | git commit-graph write --stdin-commits &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "6"
+'
+
+graph_git_behavior 'graph from commits, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'graph from commits, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'build graph from commits with append' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git rev-parse merge/3 | git commit-graph write --stdin-commits --append &&
+ test_path_is_file $objdir/info/commit-graph &&
+ graph_read_expect "10" "large_edges"
+'
+
+graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1
+graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2
+
+test_expect_success 'setup bare repo' '
+ cd "$TRASH_DIRECTORY" &&
+ git clone --bare --no-local full bare &&
+ cd bare &&
+ git config core.commitGraph true &&
+ baredir="./objects"
+'
+
+graph_git_behavior 'bare repo, commit 8 vs merge 1' bare commits/8 merge/1
+graph_git_behavior 'bare repo, commit 8 vs merge 2' bare commits/8 merge/2
+
+test_expect_success 'write graph in bare repo' '
+ cd "$TRASH_DIRECTORY/bare" &&
+ git commit-graph write &&
+ test_path_is_file $baredir/info/commit-graph &&
+ graph_read_expect "11" "large_edges"
+'
+
+graph_git_behavior 'bare repo with graph, commit 8 vs merge 1' bare commits/8 merge/1
+graph_git_behavior 'bare repo with graph, commit 8 vs merge 2' bare commits/8 merge/2
+
+test_done