path: root/t/t5318-commit-graph.sh

#!/bin/sh

test_description='commit graph'
. ./test-lib.sh

GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=0

test_expect_success 'setup full repo' '
	mkdir full &&
	cd "$TRASH_DIRECTORY/full" &&
	git init &&
	git config core.commitGraph true &&
	objdir=".git/objects" &&
	test_oid_init
'

test_expect_success POSIXPERM 'tweak umask for modebit tests' '
	umask 022
'

test_expect_success 'verify graph with no graph file' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph verify
'

test_expect_success 'write graph with no packs' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph write --object-dir $objdir &&
	test_path_is_missing $objdir/info/commit-graph
'

test_expect_success 'exit with correct error on bad input to --stdin-packs' '
	cd "$TRASH_DIRECTORY/full" &&
	echo doesnotexist >in &&
	test_expect_code 1 git commit-graph write --stdin-packs <in 2>stderr &&
	test_i18ngrep "error adding pack" stderr
'

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.commitGraph=true $1 >output
	git -c core.commitGraph=false $1 >expect
	test_cmp expect output
}

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
	test-tool read-graph >output &&
	test_cmp expect output
}

test_expect_success 'exit with correct error on bad input to --stdin-commits' '
	cd "$TRASH_DIRECTORY/full" &&
	# invalid, non-hex OID
	echo HEAD >in &&
	test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr &&
	test_i18ngrep "unexpected non-hex object ID: HEAD" stderr &&
	# non-existent OID
	echo $ZERO_OID >in &&
	test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr &&
	test_i18ngrep "invalid object" stderr &&
	# valid commit and tree OID
	git rev-parse HEAD HEAD^{tree} >in &&
	git commit-graph write --stdin-commits <in &&
	graph_read_expect 3
'

test_expect_success 'write graph' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph write &&
	test_path_is_file $objdir/info/commit-graph &&
	graph_read_expect "3"
'

test_expect_success POSIXPERM 'write graph has correct permissions' '
	test_path_is_file $objdir/info/commit-graph &&
	echo "-r--r--r--" >expect &&
	test_modebits $objdir/info/commit-graph >actual &&
	test_cmp expect actual
'

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
'

test_expect_success 'commit-graph write progress off for redirected stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph write 2>err &&
	test_must_be_empty err
'

test_expect_success 'commit-graph write force progress on for stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	GIT_PROGRESS_DELAY=0 git commit-graph write --progress 2>err &&
	test_file_not_empty err
'

test_expect_success 'commit-graph write with the --no-progress option' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph write --no-progress 2>err &&
	test_must_be_empty err
'

test_expect_success 'commit-graph write --stdin-commits progress off for redirected stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	git rev-parse commits/5 >in &&
	git commit-graph write --stdin-commits <in 2>err &&
	test_must_be_empty err
'

test_expect_success 'commit-graph write --stdin-commits force progress on for stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	git rev-parse commits/5 >in &&
	GIT_PROGRESS_DELAY=0 git commit-graph write --stdin-commits --progress <in 2>err &&
	test_i18ngrep "Collecting commits from input" err
'

test_expect_success 'commit-graph write --stdin-commits with the --no-progress option' '
	cd "$TRASH_DIRECTORY/full" &&
	git rev-parse commits/5 >in &&
	git commit-graph write --stdin-commits --no-progress <in 2>err &&
	test_must_be_empty err
'

test_expect_success 'commit-graph verify progress off for redirected stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph verify 2>err &&
	test_must_be_empty err
'

test_expect_success 'commit-graph verify force progress on for stderr' '
	cd "$TRASH_DIRECTORY/full" &&
	GIT_PROGRESS_DELAY=0 git commit-graph verify --progress 2>err &&
	test_file_not_empty err
'

test_expect_success 'commit-graph verify with the --no-progress option' '
	cd "$TRASH_DIRECTORY/full" &&
	git commit-graph verify --no-progress 2>err &&
	test_must_be_empty err
'

# 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" "extra_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 -f 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" "extra_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" "extra_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" "extra_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 writ