Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 547 insertions, 0 deletions

diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh
new file mode 100755
index 0000000..b4ab166
--- /dev/null
+++ b/t/t1700-split-index.sh
@@ -0,0 +1,547 @@
+#!/bin/sh
+
+test_description='split index mode tests'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+# We need total control of index splitting here
+sane_unset GIT_TEST_SPLIT_INDEX
+
+# Testing a hard coded SHA against an index with an extension
+# that can vary from run to run is problematic so we disable
+# those extensions.
+sane_unset GIT_TEST_FSMONITOR
+sane_unset GIT_TEST_INDEX_THREADS
+
+# Create a file named as $1 with content read from stdin.
+# Set the file's mtime to a few seconds in the past to avoid racy situations.
+create_non_racy_file () {
+	cat >"$1" &&
+	test-tool chmtime =-5 "$1"
+}
+
+test_expect_success 'setup' '
+	test_oid_cache <<-EOF
+	own_v3 sha1:8299b0bcd1ac364e5f1d7768efb62fa2da79a339
+	own_v3 sha256:38a6d2925e3eceec33ad7b34cbff4e0086caa0daf28f31e51f5bd94b4a7af86b
+
+	base_v3 sha1:39d890139ee5356c7ef572216cebcd27aa41f9df
+	base_v3 sha256:c9baeadf905112bf6c17aefbd7d02267afd70ded613c30cafed2d40cb506e1ed
+
+	own_v4 sha1:432ef4b63f32193984f339431fd50ca796493569
+	own_v4 sha256:6738ac6319c25b694afa7bcc313deb182d1a59b68bf7a47b4296de83478c0420
+
+	base_v4 sha1:508851a7f0dfa8691e9f69c7f055865389012491
+	base_v4 sha256:3177d4adfdd4b6904f7e921d91d715a471c0dde7cf6a4bba574927f02b699508
+	EOF
+'
+
+test_expect_success 'enable split index' '
+	git config splitIndex.maxPercentChange 100 &&
+	git update-index --split-index &&
+	test-tool dump-split-index .git/index >actual &&
+	indexversion=$(test-tool index-version <.git/index) &&
+
+	# NEEDSWORK: Stop hard-coding checksums.
+	if test "$indexversion" = "4"
+	then
+		own=$(test_oid own_v4) &&
+		base=$(test_oid base_v4)
+	else
+		own=$(test_oid own_v3) &&
+		base=$(test_oid base_v3)
+	fi &&
+
+	cat >expect <<-EOF &&
+	own $own
+	base $base
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'add one file' '
+	create_non_racy_file one &&
+	git update-index --add one &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	base $base
+	100644 $EMPTY_BLOB 0	one
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'disable split index' '
+	git update-index --no-split-index &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	BASE=$(test-tool dump-split-index .git/index | sed -n "s/^own/base/p") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	not a split index
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'enable split index again, "one" now belongs to base index"' '
+	git update-index --split-index &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'modify original file, base index untouched' '
+	echo modified | create_non_racy_file one &&
+	file1_blob=$(git hash-object one) &&
+	git update-index one &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $file1_blob 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	q_to_tab >expect <<-EOF &&
+	$BASE
+	100644 $file1_blob 0Q
+	replacements: 0
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'add another file, which stays index' '
+	create_non_racy_file two &&
+	git update-index --add two &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $file1_blob 0	one
+	100644 $EMPTY_BLOB 0	two
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	q_to_tab >expect <<-EOF &&
+	$BASE
+	100644 $file1_blob 0Q
+	100644 $EMPTY_BLOB 0	two
+	replacements: 0
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'remove file not in base index' '
+	git update-index --force-remove two &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $file1_blob 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	q_to_tab >expect <<-EOF &&
+	$BASE
+	100644 $file1_blob 0Q
+	replacements: 0
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'remove file in base index' '
+	git update-index --force-remove one &&
+	git ls-files --stage >ls-files.actual &&
+	test_must_be_empty ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions: 0
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'add original file back' '
+	create_non_racy_file one &&
+	git update-index --add one &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	100644 $EMPTY_BLOB 0	one
+	replacements:
+	deletions: 0
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'add new file' '
+	create_non_racy_file two &&
+	git update-index --add two &&
+	git ls-files --stage >actual &&
+	cat >expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	100644 $EMPTY_BLOB 0	two
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'unify index, two files remain' '
+	git update-index --no-split-index &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	100644 $EMPTY_BLOB 0	two
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	not a split index
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'rev-parse --shared-index-path' '
+	test_create_repo split-index &&
+	(
+		cd split-index &&
+		git update-index --split-index &&
+		echo .git/sharedindex* >expect &&
+		git rev-parse --shared-index-path >actual &&
+		test_cmp expect actual &&
+		mkdir subdirectory &&
+		cd subdirectory &&
+		echo ../.git/sharedindex* >expect &&
+		git rev-parse --shared-index-path >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'set core.splitIndex config variable to true' '
+	git config core.splitIndex true &&
+	create_non_racy_file three &&
+	git update-index --add three &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	100644 $EMPTY_BLOB 0	three
+	100644 $EMPTY_BLOB 0	two
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+	BASE=$(test-tool dump-split-index .git/index | grep "^base") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'set core.splitIndex config variable to false' '
+	git config core.splitIndex false &&
+	git update-index --force-remove three &&
+	git ls-files --stage >ls-files.actual &&
+	cat >ls-files.expect <<-EOF &&
+	100644 $EMPTY_BLOB 0	one
+	100644 $EMPTY_BLOB 0	two
+	EOF
+	test_cmp ls-files.expect ls-files.actual &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	not a split index
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'set core.splitIndex config variable back to true' '
+	git config core.splitIndex true &&
+	create_non_racy_file three &&
+	git update-index --add three &&
+	BASE=$(test-tool dump-split-index .git/index | grep "^base") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual &&
+	create_non_racy_file four &&
+	git update-index --add four &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	100644 $EMPTY_BLOB 0	four
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'check behavior with splitIndex.maxPercentChange unset' '
+	git config --unset splitIndex.maxPercentChange &&
+	create_non_racy_file five &&
+	git update-index --add five &&
+	BASE=$(test-tool dump-split-index .git/index | grep "^base") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual &&
+	create_non_racy_file six &&
+	git update-index --add six &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	100644 $EMPTY_BLOB 0	six
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'check splitIndex.maxPercentChange set to 0' '
+	git config splitIndex.maxPercentChange 0 &&
+	create_non_racy_file seven &&
+	git update-index --add seven &&
+	BASE=$(test-tool dump-split-index .git/index | grep "^base") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual &&
+	create_non_racy_file eight &&
+	git update-index --add eight &&
+	BASE=$(test-tool dump-split-index .git/index | grep "^base") &&
+	test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
+	cat >expect <<-EOF &&
+	$BASE
+	replacements:
+	deletions:
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'shared index files expire after 2 weeks by default' '
+	create_non_racy_file ten &&
+	git update-index --add ten &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 2 &&
+	just_under_2_weeks_ago=$((5-14*86400)) &&
+	test-tool chmtime =$just_under_2_weeks_ago .git/sharedindex.* &&
+	create_non_racy_file eleven &&
+	git update-index --add eleven &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 2 &&
+	just_over_2_weeks_ago=$((-1-14*86400)) &&
+	test-tool chmtime =$just_over_2_weeks_ago .git/sharedindex.* &&
+	create_non_racy_file twelve &&
+	git update-index --add twelve &&
+	test $(ls .git/sharedindex.* | wc -l) -le 2
+'
+
+test_expect_success 'check splitIndex.sharedIndexExpire set to 16 days' '
+	git config splitIndex.sharedIndexExpire "16.days.ago" &&
+	test-tool chmtime =$just_over_2_weeks_ago .git/sharedindex.* &&
+	create_non_racy_file thirteen &&
+	git update-index --add thirteen &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 2 &&
+	just_over_16_days_ago=$((-1-16*86400)) &&
+	test-tool chmtime =$just_over_16_days_ago .git/sharedindex.* &&
+	create_non_racy_file fourteen &&
+	git update-index --add fourteen &&
+	test $(ls .git/sharedindex.* | wc -l) -le 2
+'
+
+test_expect_success 'check splitIndex.sharedIndexExpire set to "never" and "now"' '
+	git config splitIndex.sharedIndexExpire never &&
+	just_10_years_ago=$((-365*10*86400)) &&
+	test-tool chmtime =$just_10_years_ago .git/sharedindex.* &&
+	create_non_racy_file fifteen &&
+	git update-index --add fifteen &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 2 &&
+	git config splitIndex.sharedIndexExpire now &&
+	just_1_second_ago=-1 &&
+	test-tool chmtime =$just_1_second_ago .git/sharedindex.* &&
+	create_non_racy_file sixteen &&
+	git update-index --add sixteen &&
+	test $(ls .git/sharedindex.* | wc -l) -le 2
+'
+
+test_expect_success POSIXPERM 'same mode for index & split index' '
+	git init same-mode &&
+	(
+		cd same-mode &&
+		test_commit A &&
+		test_modebits .git/index >index_mode &&
+		test_must_fail git config core.sharedRepository &&
+		git -c core.splitIndex=true status &&
+		shared=$(ls .git/sharedindex.*) &&
+		case "$shared" in
+		*" "*)
+			# we have more than one???
+			false ;;
+		*)
+			test_modebits "$shared" >split_index_mode &&
+			test_cmp index_mode split_index_mode ;;
+		esac
+	)
+'
+
+while read -r mode modebits
+do
+	test_expect_success POSIXPERM "split index respects core.sharedrepository $mode" '
+		# Remove existing shared index files
+		git config core.splitIndex false &&
+		git update-index --force-remove one &&
+		rm -f .git/sharedindex.* &&
+		# Create one new shared index file
+		git config core.sharedrepository "$mode" &&
+		git config core.splitIndex true &&
+		create_non_racy_file one &&
+		git update-index --add one &&
+		echo "$modebits" >expect &&
+		test_modebits .git/index >actual &&
+		test_cmp expect actual &&
+		shared=$(ls .git/sharedindex.*) &&
+		case "$shared" in
+		*" "*)
+			# we have more than one???
+			false ;;
+		*)
+			test_modebits "$shared" >actual &&
+			test_cmp expect actual ;;
+		esac
+	'
+done <<\EOF
+0666 -rw-rw-rw-
+0642 -rw-r---w-
+EOF
+
+test_expect_success POSIXPERM,SANITY 'graceful handling when splitting index is not allowed' '
+	test_create_repo ro &&
+	(
+		cd ro &&
+		test_commit initial &&
+		git update-index --split-index &&
+		test -f .git/sharedindex.*
+	) &&
+	cp ro/.git/index new-index &&
+	test_when_finished "chmod u+w ro/.git" &&
+	chmod u-w ro/.git &&
+	GIT_INDEX_FILE="$(pwd)/new-index" git -C ro update-index --split-index &&
+	chmod u+w ro/.git &&
+	rm ro/.git/sharedindex.* &&
+	GIT_INDEX_FILE=new-index git ls-files >actual &&
+	echo initial.t >expected &&
+	test_cmp expected actual
+'
+
+test_expect_success 'writing split index with null sha1 does not write cache tree' '
+	git config core.splitIndex true &&
+	git config splitIndex.maxPercentChange 0 &&
+	git commit -m "commit" &&
+	{
+		git ls-tree HEAD &&
+		printf "160000 commit $ZERO_OID\\tbroken\\n"
+	} >broken-tree &&
+	echo "add broken entry" >msg &&
+
+	tree=$(git mktree <broken-tree) &&
+	test_tick &&
+	commit=$(git commit-tree $tree -p HEAD <msg) &&
+	git update-ref HEAD "$commit" &&
+	GIT_ALLOW_NULL_SHA1=1 git reset --hard &&
+	test_might_fail test-tool dump-cache-tree >cache-tree.out &&
+	test_line_count = 0 cache-tree.out
+'
+
+test_expect_success 'do not refresh null base index' '
+	test_create_repo merge &&
+	(
+		cd merge &&
+		test_commit initial &&
+		git checkout -b side-branch &&
+		test_commit extra &&
+		git checkout main &&
+		git update-index --split-index &&
+		test_commit more &&
+		# must not write a new shareindex, or we wont catch the problem
+		git -c splitIndex.maxPercentChange=100 merge --no-edit side-branch 2>err &&
+		# i.e. do not expect warnings like
+		# could not freshen shared index .../shareindex.00000...
+		test_must_be_empty err
+	)
+'
+
+test_expect_success 'reading split index at alternate location' '
+	git init reading-alternate-location &&
+	(
+		cd reading-alternate-location &&
+		>file-in-alternate &&
+		git update-index --split-index --add file-in-alternate
+	) &&
+	echo file-in-alternate >expect &&
+
+	# Should be able to find the shared index both right next to
+	# the specified split index file ...
+	GIT_INDEX_FILE=./reading-alternate-location/.git/index \
+	git ls-files --cached >actual &&
+	test_cmp expect actual &&
+
+	# ... and, for backwards compatibility, in the current GIT_DIR
+	# as well.
+	mv -v ./reading-alternate-location/.git/sharedindex.* .git &&
+	GIT_INDEX_FILE=./reading-alternate-location/.git/index \
+	git ls-files --cached >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'GIT_TEST_SPLIT_INDEX works' '
+	git init git-test-split-index &&
+	(
+		cd git-test-split-index &&
+		>file &&
+		GIT_TEST_SPLIT_INDEX=1 git update-index --add file &&
+		ls -l .git/sharedindex.* >actual &&
+		test_line_count = 1 actual
+	)
+'
+
+test_done