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, 994 insertions, 0 deletions

diff --git a/t/t7063-status-untracked-cache.sh b/t/t7063-status-untracked-cache.sh
new file mode 100755
index 0000000..8929ef4
--- /dev/null
+++ b/t/t7063-status-untracked-cache.sh
@@ -0,0 +1,994 @@
+#!/bin/sh
+
+test_description='test untracked cache'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+# On some filesystems (e.g. FreeBSD's ext2 and ufs) directory mtime
+# is updated lazily after contents in the directory changes, which
+# forces the untracked cache code to take the slow path.  A test
+# that wants to make sure that the fast path works correctly should
+# call this helper to make mtime of the containing directory in sync
+# with the reality before checking the fast path behaviour.
+#
+# See <20160803174522.5571-1-pclouds@gmail.com> if you want to know
+# more.
+
+GIT_FORCE_UNTRACKED_CACHE=true
+export GIT_FORCE_UNTRACKED_CACHE
+
+sync_mtime () {
+	find . -type d -exec ls -ld {} + >/dev/null
+}
+
+avoid_racy() {
+	sleep 1
+}
+
+status_is_clean() {
+	git status --porcelain >../status.actual &&
+	test_must_be_empty ../status.actual
+}
+
+# Ignore_Untracked_Cache, abbreviated to 3 letters because then people can
+# compare commands side-by-side, e.g.
+#    iuc status --porcelain >expect &&
+#    git status --porcelain >actual &&
+#    test_cmp expect actual
+iuc () {
+	git ls-files -s >../current-index-entries
+	git ls-files -t | sed -ne s/^S.//p >../current-sparse-entries
+
+	GIT_INDEX_FILE=.git/tmp_index
+	export GIT_INDEX_FILE
+	git update-index --index-info <../current-index-entries
+	git update-index --skip-worktree $(cat ../current-sparse-entries)
+
+	git -c core.untrackedCache=false "$@"
+	ret=$?
+
+	rm ../current-index-entries
+	rm $GIT_INDEX_FILE
+	unset GIT_INDEX_FILE
+
+	return $ret
+}
+
+get_relevant_traces () {
+	# From the GIT_TRACE2_PERF data of the form
+	#    $TIME $FILE:$LINE | d0 | main | data | r1 | ? | ? | read_directo | $RELEVANT_STAT
+	# extract the $RELEVANT_STAT fields.  We don't care about region_enter
+	# or region_leave, or stats for things outside read_directory.
+	INPUT_FILE=$1
+	OUTPUT_FILE=$2
+	grep data.*read_directo $INPUT_FILE |
+	    cut -d "|" -f 9 |
+	    grep -v visited \
+	    >"$OUTPUT_FILE"
+}
+
+
+test_lazy_prereq UNTRACKED_CACHE '
+	{ git update-index --test-untracked-cache; ret=$?; } &&
+	test $ret -ne 1
+'
+
+if ! test_have_prereq UNTRACKED_CACHE; then
+	skip_all='This system does not support untracked cache'
+	test_done
+fi
+
+test_expect_success 'core.untrackedCache is unset' '
+	test_must_fail git config --get core.untrackedCache
+'
+
+test_expect_success 'setup' '
+	git init --template= worktree &&
+	cd worktree &&
+	mkdir done dtwo dthree &&
+	touch one two three done/one dtwo/two dthree/three &&
+	test-tool chmtime =-300 one two three done/one dtwo/two dthree/three &&
+	test-tool chmtime =-300 done dtwo dthree &&
+	test-tool chmtime =-300 . &&
+	git add one two done/one &&
+	mkdir .git/info &&
+	: >.git/info/exclude &&
+	git update-index --untracked-cache &&
+	test_oid_cache <<-EOF
+	root sha1:e6fcc8f2ee31bae321d66afd183fcb7237afae6e
+	root sha256:b90c672088c015b9c83876e919da311bad4cd39639fb139f988af6a11493b974
+
+	exclude sha1:13263c0978fb9fad16b2d580fb800b6d811c3ff0
+	exclude sha256:fe4aaa1bbbbce4cb8f73426748a14c5ad6026b26f90505a0bf2494b165a5b76c
+
+	done sha1:1946f0437f90c5005533cbe1736a6451ca301714
+	done sha256:7f079501d79f665b3acc50f5e0e9e94509084d5032ac20113a37dd5029b757cc
+	EOF
+'
+
+test_expect_success 'untracked cache is empty' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect-empty <<EOF &&
+info/exclude $ZERO_OID
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+EOF
+	test_cmp ../expect-empty ../actual
+'
+
+cat >../status.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? dthree/
+?? dtwo/
+?? three
+EOF
+
+cat >../dump.expect <<EOF &&
+info/exclude $EMPTY_BLOB
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $ZERO_OID recurse valid
+dthree/
+dtwo/
+three
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+three
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+
+test_expect_success 'status first time (empty cache)' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:3
+ ....gitignore-invalidation:1
+ ....directory-invalidation:0
+ ....opendir:4
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'untracked cache after first status' '
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../dump.expect ../actual
+'
+
+test_expect_success 'status second time (fully populated cache)' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:0
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'untracked cache after second status' '
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../dump.expect ../actual
+'
+
+cat >../status_uall.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? dthree/three
+?? dtwo/two
+?? three
+EOF
+
+# Bypassing the untracked cache here is not desirable from an
+# end-user perspective, but is expected in the current design.
+# The untracked cache data stored for a -unormal run cannot be
+# correctly used in a -uall run - it would yield incorrect output.
+test_expect_success 'untracked cache is bypassed with -uall' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status -uall --porcelain >../actual &&
+	iuc status -uall --porcelain >../status.iuc &&
+	test_cmp ../status_uall.expect ../status.iuc &&
+	test_cmp ../status_uall.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'untracked cache remains after bypass' '
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../dump.expect ../actual
+'
+
+test_expect_success 'if -uall is configured, untracked cache gets populated by default' '
+	test_config status.showuntrackedfiles all &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	test_cmp ../status_uall.expect ../status.iuc &&
+	test_cmp ../status_uall.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:3
+ ....gitignore-invalidation:1
+ ....directory-invalidation:0
+ ....opendir:4
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+cat >../dump_uall.expect <<EOF &&
+info/exclude $EMPTY_BLOB
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000000
+/ $ZERO_OID recurse valid
+three
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse valid
+three
+/dtwo/ $ZERO_OID recurse valid
+two
+EOF
+
+test_expect_success 'if -uall was configured, untracked cache is populated' '
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../dump_uall.expect ../actual
+'
+
+test_expect_success 'if -uall is configured, untracked cache is used by default' '
+	test_config status.showuntrackedfiles all &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	test_cmp ../status_uall.expect ../status.iuc &&
+	test_cmp ../status_uall.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:0
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+# Bypassing the untracked cache here is not desirable from an
+# end-user perspective, but is expected in the current design.
+# The untracked cache data stored for a -all run cannot be
+# correctly used in a -unormal run - it would yield incorrect
+# output.
+test_expect_success 'if -uall is configured, untracked cache is bypassed with -unormal' '
+	test_config status.showuntrackedfiles all &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status -unormal --porcelain >../actual &&
+	iuc status -unormal --porcelain >../status.iuc &&
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'repopulate untracked cache for -unormal' '
+	git status --porcelain
+'
+
+test_expect_success 'modify in root directory, one dir invalidation' '
+	: >four &&
+	test-tool chmtime =-240 four &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? dthree/
+?? dtwo/
+?? four
+?? three
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:1
+ ....opendir:1
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+
+'
+
+test_expect_success 'verify untracked cache dump' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $EMPTY_BLOB
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $ZERO_OID recurse valid
+dthree/
+dtwo/
+four
+three
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+three
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'new .gitignore invalidates recursively' '
+	echo four >.gitignore &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? .gitignore
+?? dthree/
+?? dtwo/
+?? three
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:1
+ ....directory-invalidation:1
+ ....opendir:4
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+
+'
+
+test_expect_success 'verify untracked cache dump' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $EMPTY_BLOB
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dthree/
+dtwo/
+three
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+three
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'new info/exclude invalidates everything' '
+	echo three >>.git/info/exclude &&
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? .gitignore
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:1
+ ....directory-invalidation:0
+ ....opendir:4
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'verify untracked cache dump' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'move two from tracked to untracked' '
+	git rm --cached two &&
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'status after the move' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+A  done/one
+A  one
+?? .gitignore
+?? dtwo/
+?? two
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:1
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'verify untracked cache dump' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+two
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'move two from untracked to tracked' '
+	git add two &&
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'status after the move' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+A  done/one
+A  one
+A  two
+?? .gitignore
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:1
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'verify untracked cache dump' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'set up for sparse checkout testing' '
+	echo two >done/.gitignore &&
+	echo three >>done/.gitignore &&
+	echo two >done/two &&
+	git add -f done/two done/.gitignore &&
+	git commit -m "first commit"
+'
+
+test_expect_success 'status after commit' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+?? .gitignore
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:2
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'untracked cache correct after commit' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'set up sparse checkout' '
+	echo "done/[a-z]*" >.git/info/sparse-checkout &&
+	test_config core.sparsecheckout true &&
+	git checkout main &&
+	git update-index --force-untracked-cache &&
+	git status --porcelain >/dev/null && # prime the cache
+	test_path_is_missing done/.gitignore &&
+	test_path_is_file done/one
+'
+
+test_expect_success 'create/modify files, some of which are gitignored' '
+	echo two bis >done/two &&
+	echo three >done/three && # three is gitignored
+	echo four >done/four && # four is gitignored at a higher level
+	echo five >done/five && # five is not gitignored
+	test-tool chmtime =-180 done/two done/three done/four done/five done &&
+	# we need to ensure that the root dir is touched (in the past);
+	test-tool chmtime =-180 . &&
+	sync_mtime
+'
+
+test_expect_success 'test sparse status with untracked cache' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+ M done/two
+?? .gitignore
+?? done/five
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:1
+ ....directory-invalidation:2
+ ....opendir:2
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'untracked cache correct after status' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+/done/ $(test_oid done) recurse valid
+five
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect ../actual
+'
+
+test_expect_success 'test sparse status again with untracked cache' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+ M done/two
+?? .gitignore
+?? done/five
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:0
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'set up for test of subdir and sparse checkouts' '
+	mkdir done/sub &&
+	mkdir done/sub/sub &&
+	echo "sub" > done/sub/sub/file &&
+	test-tool chmtime =-120 done/sub/sub/file done/sub/sub done/sub done
+'
+
+test_expect_success 'test sparse status with untracked cache and subdir' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+ M done/two
+?? .gitignore
+?? done/five
+?? done/sub/
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:2
+ ....gitignore-invalidation:0
+ ....directory-invalidation:1
+ ....opendir:3
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'verify untracked cache dump (sparse/subdirs)' '
+	test-tool dump-untracked-cache >../actual &&
+	cat >../expect-from-test-dump <<EOF &&
+info/exclude $(test_oid exclude)
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000006
+/ $(test_oid root) recurse valid
+.gitignore
+dtwo/
+/done/ $(test_oid done) recurse valid
+five
+sub/
+/done/sub/ $ZERO_OID recurse check_only valid
+sub/
+/done/sub/sub/ $ZERO_OID recurse check_only valid
+file
+/dthree/ $ZERO_OID recurse check_only valid
+/dtwo/ $ZERO_OID recurse check_only valid
+two
+EOF
+	test_cmp ../expect-from-test-dump ../actual
+'
+
+test_expect_success 'test sparse status again with untracked cache and subdir' '
+	: >../trace.output &&
+	GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual &&
+	get_relevant_traces ../trace.output ../trace.relevant &&
+	cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:0
+EOF
+	test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'move entry in subdir from untracked to cached' '
+	git add dtwo/two &&
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+ M done/two
+A  dtwo/two
+?? .gitignore
+?? done/five
+?? done/sub/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual
+'
+
+test_expect_success 'move entry in subdir from cached to untracked' '
+	git rm --cached dtwo/two &&
+	git status --porcelain >../status.actual &&
+	iuc status --porcelain >../status.iuc &&
+	cat >../status.expect <<EOF &&
+ M done/two
+?? .gitignore
+?? done/five
+?? done/sub/
+?? dtwo/
+EOF
+	test_cmp ../status.expect ../status.iuc &&
+	test_cmp ../status.expect ../status.actual
+'
+
+test_expect_success '--no-untracked-cache removes the cache' '
+	git update-index --no-untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	echo "no untracked cache" >../expect-no-uc &&
+	test_cmp ../expect-no-uc ../actual
+'
+
+test_expect_success 'git status does not change anything' '
+	git status &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-no-uc ../actual
+'
+
+test_expect_success 'setting core.untrackedCache to true and using git status creates the cache' '
+	git config core.untrackedCache true &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-no-uc ../actual &&
+	git status &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-from-test-dump ../actual
+'
+
+test_expect_success 'using --no-untracked-cache does not fail when core.untrackedCache is true' '
+	git update-index --no-untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-no-uc ../actual &&
+	git update-index --untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-empty ../actual
+'
+
+test_expect_success 'setting core.untrackedCache to false and using git status removes the cache' '
+	git config core.untrackedCache false &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-empty ../actual &&
+	git status &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-no-uc ../actual
+'
+
+test_expect_success 'using --untracked-cache does not fail when core.untrackedCache is false' '
+	git update-index --untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-empty ../actual
+'
+
+test_expect_success 'setting core.untrackedCache to keep' '
+	git config core.untrackedCache keep &&
+	git update-index --untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-empty ../actual &&
+	git status &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-from-test-dump ../actual &&
+	git update-index --no-untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-no-uc ../actual &&
+	git update-index --force-untracked-cache &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-empty ../actual &&
+	git status &&
+	test-tool dump-untracked-cache >../actual &&
+	test_cmp ../expect-from-test-dump ../actual
+'
+
+test_expect_success 'test ident field is working' '
+	mkdir ../other_worktree &&
+	cp -R done dthree dtwo four three ../other_worktree &&
+	GIT_WORK_TREE=../other_worktree git status 2>../err &&
+	echo "warning: untracked cache is disabled on this system or location" >../expect &&
+	test_cmp ../expect ../err
+'
+
+test_expect_success 'untracked cache survives a checkout' '
+	git commit --allow-empty -m empty &&
+	test-tool dump-untracked-cache >../before &&
+	test_when_finished  "git checkout main" &&
+	git checkout -b other_branch &&
+	test-tool dump-untracked-cache >../after &&
+	test_cmp ../before ../after &&
+	test_commit test &&
+	test-tool dump-untracked-cache >../before &&
+	git checkout main &&
+	test-tool dump-untracked-cache >../after &&
+	test_cmp ../before ../after
+'
+
+test_expect_success 'untracked cache survives a commit' '
+	test-tool dump-untracked-cache >../before &&
+	git add done/two &&
+	git commit -m commit &&
+	test-tool dump-untracked-cache >../after &&
+	test_cmp ../before ../after
+'
+
+test_expect_success 'teardown worktree' '
+	cd ..
+'
+
+test_expect_success SYMLINKS 'setup worktree for symlink test' '
+	git init worktree-symlink &&
+	cd worktree-symlink &&
+	git config core.untrackedCache true &&
+	mkdir one two &&
+	touch one/file two/file &&
+	git add one/file two/file &&
+	git commit -m"first commit" &&
+	git rm -rf one &&
+	ln -s two one &&
+	git add one &&
+	git commit -m"second commit"
+'
+
+test_expect_success SYMLINKS '"status" after symlink replacement should be clean with UC=true' '
+	git checkout HEAD~ &&
+	status_is_clean &&
+	status_is_clean &&
+	git checkout main &&
+	avoid_racy &&
+	status_is_clean &&
+	status_is_clean
+'
+
+test_expect_success SYMLINKS '"status" after symlink replacement should be clean with UC=false' '
+	git config core.untrackedCache false &&
+	git checkout HEAD~ &&
+	status_is_clean &&
+	status_is_clean &&
+	git checkout main &&
+	avoid_racy &&
+	status_is_clean &&
+	status_is_clean
+'
+
+test_expect_success 'setup worktree for non-symlink test' '
+	git init worktree-non-symlink &&
+	cd worktree-non-symlink &&
+	git config core.untrackedCache true &&
+	mkdir one two &&
+	touch one/file two/file &&
+	git add one/file two/file &&
+	git commit -m"first commit" &&
+	git rm -rf one &&
+	cp two/file one &&
+	git add one &&
+	git commit -m"second commit"
+'
+
+test_expect_success '"status" after file replacement should be clean with UC=true' '
+	git checkout HEAD~ &&
+	status_is_clean &&
+	status_is_clean &&
+	git checkout main &&
+	avoid_racy &&
+	status_is_clean &&
+	test-tool dump-untracked-cache >../actual &&
+	grep -F "recurse valid" ../actual >../actual.grep &&
+	cat >../expect.grep <<EOF &&
+/ $ZERO_OID recurse valid
+/two/ $ZERO_OID recurse valid
+EOF
+	status_is_clean &&
+	test_cmp ../expect.grep ../actual.grep
+'
+
+test_expect_success '"status" after file replacement should be clean with UC=false' '
+	git config core.untrackedCache false &&
+	git checkout HEAD~ &&
+	status_is_clean &&
+	status_is_clean &&
+	git checkout main &&
+	avoid_racy &&
+	status_is_clean &&
+	status_is_clean
+'
+
+test_expect_success 'empty repo (no index) and core.untrackedCache' '
+	git init emptyrepo &&
+	git -C emptyrepo -c core.untrackedCache=true write-tree
+'
+
+test_done