[thirdparty/git.git] / t / t6120-describe.sh

#!/bin/sh

test_description='test describe

                       B
        .--------------o----o----o----x
       /                   /    /
 o----o----o----o----o----.    /
       \        A    c        /
        .------------o---o---o
                   D,R   e
'
. ./test-lib.sh

check_describe () {
	expect="$1"
	shift
	R=$(git describe "$@" 2>err.actual)
	S=$?
	cat err.actual >&3
	test_expect_success "describe $*" '
	test $S = 0 &&
	case "$R" in
	$expect)	echo happy ;;
	*)	echo "Oops - $R is not $expect";
		false ;;
	esac
	'
}

test_expect_success setup '

	test_tick &&
	echo one >file && git add file && git commit -m initial &&
	one=$(git rev-parse HEAD) &&

	git describe --always HEAD &&

	test_tick &&
	echo two >file && git add file && git commit -m second &&
	two=$(git rev-parse HEAD) &&

	test_tick &&
	echo three >file && git add file && git commit -m third &&

	test_tick &&
	echo A >file && git add file && git commit -m A &&
	test_tick &&
	git tag -a -m A A &&

	test_tick &&
	echo c >file && git add file && git commit -m c &&
	test_tick &&
	git tag c &&

	git reset --hard $two &&
	test_tick &&
	echo B >side && git add side && git commit -m B &&
	test_tick &&
	git tag -a -m B B &&

	test_tick &&
	git merge -m Merged c &&
	merged=$(git rev-parse HEAD) &&

	git reset --hard $two &&
	test_tick &&
	echo D >another && git add another && git commit -m D &&
	test_tick &&
	git tag -a -m D D &&
	test_tick &&
	git tag -a -m R R &&

	test_tick &&
	echo DD >another && git commit -a -m another &&

	test_tick &&
	git tag e &&

	test_tick &&
	echo DDD >another && git commit -a -m "yet another" &&

	test_tick &&
	git merge -m Merged $merged &&

	test_tick &&
	echo X >file && echo X >side && git add file side &&
	git commit -m x

'

check_describe A-* HEAD
check_describe A-* HEAD^
check_describe R-* HEAD^^
check_describe A-* HEAD^^2
check_describe B HEAD^^2^
check_describe R-* HEAD^^^

check_describe c-* --tags HEAD
check_describe c-* --tags HEAD^
check_describe e-* --tags HEAD^^
check_describe c-* --tags HEAD^^2
check_describe B --tags HEAD^^2^
check_describe e --tags HEAD^^^

check_describe heads/master --all HEAD
check_describe tags/c-* --all HEAD^
check_describe tags/e --all HEAD^^^

check_describe B-0-* --long HEAD^^2^
check_describe A-3-* --long HEAD^^2

check_describe c-7-* --tags
check_describe e-3-* --first-parent --tags

test_expect_success 'describe --contains defaults to HEAD without commit-ish' '
	echo "A^0" >expect &&
	git checkout A &&
	test_when_finished "git checkout -" &&
	git describe --contains >actual &&
	test_cmp expect actual
'

: >err.expect
check_describe A --all A^0
test_expect_success 'no warning was displayed for A' '
	test_cmp err.expect err.actual
'

test_expect_success 'rename tag A to Q locally' '
	mv .git/refs/tags/A .git/refs/tags/Q
'
cat - >err.expect <<EOF
warning: tag 'A' is really 'Q' here
EOF
check_describe A-* HEAD
test_expect_success 'warning was displayed for Q' '
	test_i18ncmp err.expect err.actual
'
test_expect_success 'rename tag Q back to A' '
	mv .git/refs/tags/Q .git/refs/tags/A
'

test_expect_success 'pack tag refs' 'git pack-refs'
check_describe A-* HEAD

check_describe "A-*[0-9a-f]" --dirty

test_expect_success 'set-up dirty work tree' '
	echo >>file
'

check_describe "A-*[0-9a-f]-dirty" --dirty

check_describe "A-*[0-9a-f].mod" --dirty=.mod

test_expect_success 'describe --dirty HEAD' '
	test_must_fail git describe --dirty HEAD
'

test_expect_success 'set-up matching pattern tests' '
	git tag -a -m test-annotated test-annotated &&
	echo >>file &&
	test_tick &&
	git commit -a -m "one more" &&
	git tag test1-lightweight &&
	echo >>file &&
	test_tick &&
	git commit -a -m "yet another" &&
	git tag test2-lightweight &&
	echo >>file &&
	test_tick &&
	git commit -a -m "even more"

'

check_describe "test-annotated-*" --match="test-*"

check_describe "test1-lightweight-*" --tags --match="test1-*"

check_describe "test2-lightweight-*" --tags --match="test2-*"

check_describe "test2-lightweight-*" --long --tags --match="test2-*" HEAD^

check_describe "test2-lightweight-*" --long --tags --match="test1-*" --match="test2-*" HEAD^

check_describe "test2-lightweight-*" --long --tags --match="test1-*" --no-match --match="test2-*" HEAD^

check_describe "test1-lightweight-*" --long --tags --match="test1-*" --match="test3-*" HEAD

check_describe "test1-lightweight-*" --long --tags --match="test3-*" --match="test1-*" HEAD

test_expect_success 'set-up branches' '
	git branch branch_A A &&
	git branch branch_C c &&
	git update-ref refs/remotes/origin/remote_branch_A "A^{commit}" &&
	git update-ref refs/remotes/origin/remote_branch_C "c^{commit}" &&
	git update-ref refs/original/original_branch_A test-annotated~2
'

check_describe "heads/branch_A*" --all --match="branch_*" --exclude="branch_C" HEAD

check_describe "remotes/origin/remote_branch_A*" --all --match="origin/remote_branch_*" --exclude="origin/remote_branch_C" HEAD

check_describe "original/original_branch_A*" --all test-annotated~1

test_expect_success '--match does not work for other types' '
	test_must_fail git describe --all --match="*original_branch_*" test-annotated~1
'

test_expect_success '--exclude does not work for other types' '
	R=$(git describe --all --exclude="any_pattern_even_not_matching" test-annotated~1) &&
	case "$R" in
	*original_branch_A*) echo "fail: Found unknown reference $R with --exclude"
		false;;
	*) echo ok: Found some known type;;
	esac
'

test_expect_success 'name-rev with exact tags' '
	echo A >expect &&
	tag_object=$(git rev-parse refs/tags/A) &&
	git name-rev --tags --name-only $tag_object >actual &&
	test_cmp expect actual &&

	echo "A^0" >expect &&
	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	git name-rev --tags --name-only $tagged_commit >actual &&
	test_cmp expect actual
'

test_expect_success 'name-rev --all' '
	>expect.unsorted &&
	for rev in $(git rev-list --all)
	do
		git name-rev $rev >>expect.unsorted
	done &&
	sort <expect.unsorted >expect &&
	git name-rev --all >actual.unsorted &&
	sort <actual.unsorted >actual &&
	test_cmp expect actual
'

test_expect_success 'name-rev --stdin' '
	>expect.unsorted &&
	for rev in $(git rev-list --all)
	do
		name=$(git name-rev --name-only $rev) &&
		echo "$rev ($name)" >>expect.unsorted
	done &&
	sort <expect.unsorted >expect &&
	git rev-list --all | git name-rev --stdin >actual.unsorted &&
	sort <actual.unsorted >actual &&
	test_cmp expect actual
'

test_expect_success 'describe --contains with the exact tags' '
	echo "A^0" >expect &&
	tag_object=$(git rev-parse refs/tags/A) &&
	git describe --contains $tag_object >actual &&
	test_cmp expect actual &&

	echo "A^0" >expect &&
	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	git describe --contains $tagged_commit >actual &&
	test_cmp expect actual
'

test_expect_success 'describe --contains and --match' '
	echo "A^0" >expect &&
	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	test_must_fail git describe --contains --match="B" $tagged_commit &&
	git describe --contains --match="B" --match="A" $tagged_commit >actual &&
	test_cmp expect actual
'

test_expect_success 'describe --exclude' '
	echo "c~1" >expect &&
	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	test_must_fail git describe --contains --match="B" $tagged_commit &&
	git describe --contains --match="?" --exclude="A" $tagged_commit >actual &&
	test_cmp expect actual
'

test_expect_success 'describe --contains and --no-match' '
	echo "A^0" >expect &&
	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	git describe --contains --match="B" --no-match $tagged_commit >actual &&
	test_cmp expect actual
'

test_expect_success 'setup and absorb a submodule' '
	test_create_repo sub1 &&
	test_commit -C sub1 initial &&
	git submodule add ./sub1 &&
	git submodule absorbgitdirs &&
	git commit -a -m "add submodule" &&
	git describe --dirty >expect &&
	git describe --broken >out &&
	test_cmp expect out
'

test_expect_success 'describe chokes on severely broken submodules' '
	mv .git/modules/sub1/ .git/modules/sub_moved &&
	test_must_fail git describe --dirty
'
test_expect_success 'describe ignoring a broken submodule' '
	git describe --broken >out &&
	test_when_finished "mv .git/modules/sub_moved .git/modules/sub1" &&
	grep broken out
'

test_expect_success 'describe a blob at a directly tagged commit' '
	echo "make it a unique blob" >file &&
	git add file && git commit -m "content in file" &&
	git tag -a -m "latest annotated tag" unique-file &&
	git describe HEAD:file >actual &&
	echo "unique-file:file" >expect &&
	test_cmp expect actual
'

test_expect_success 'describe a blob with its first introduction' '
	git commit --allow-empty -m "empty commit" &&
	git rm file &&
	git commit -m "delete blob" &&
	git revert HEAD &&
	git commit --allow-empty -m "empty commit" &&
	git describe HEAD:file >actual &&
	echo "unique-file:file" >expect &&
	test_cmp expect actual
'

test_expect_success 'describe directly tagged blob' '
	git tag test-blob unique-file:file &&
	git describe test-blob >actual &&
	echo "unique-file:file" >expect &&
	# suboptimal: we rather want to see "test-blob"
	test_cmp expect actual
'

test_expect_success 'describe tag object' '
	git tag test-blob-1 -a -m msg unique-file:file &&
	test_must_fail git describe test-blob-1 2>actual &&
	test_i18ngrep "fatal: test-blob-1 is neither a commit nor blob" actual
'

test_expect_failure ULIMIT_STACK_SIZE 'name-rev works in a deep repo' '
	i=1 &&
	while test $i -lt 8000
	do
		echo "commit refs/heads/master
committer A U Thor <author@example.com> $((1000000000 + $i * 100)) +0200
data <<EOF
commit #$i
EOF"
		test $i = 1 && echo "from refs/heads/master^0"
		i=$(($i + 1))
	done | git fast-import &&
	git checkout master &&
	git tag far-far-away HEAD^ &&
	echo "HEAD~4000 tags/far-far-away~3999" >expect &&
	git name-rev HEAD~4000 >actual &&
	test_cmp expect actual &&
	run_with_limited_stack git name-rev HEAD~4000 >actual &&
	test_cmp expect actual
'

test_expect_success ULIMIT_STACK_SIZE 'describe works in a deep repo' '
	git tag -f far-far-away HEAD~7999 &&
	echo "far-far-away" >expect &&
	git describe --tags --abbrev=0 HEAD~4000 >actual &&
	test_cmp expect actual &&
	run_with_limited_stack git describe --tags --abbrev=0 HEAD~4000 >actual &&
	test_cmp expect actual
'

test_done
Commit	Line	Data
5312ab11 JH	1	#!/bin/sh
	2
	3	test_description='test describe
	4
	5	B
	6	.--------------o----o----o----x
	7	/ / /
	8	o----o----o----o----o----. /
	9	\ A c /
	10	.------------o---o---o
03e8b541	11	D,R e
5312ab11 JH	12	'
	13	. ./test-lib.sh
	14
	15	check_describe () {
	16	expect="$1"
	17	shift
3291fe40	18	R=$(git describe "$@" 2>err.actual)
be7bae0d	19	S=$?
3291fe40	20	cat err.actual >&3
5312ab11	21	test_expect_success "describe $*" '
be7bae0d	22	test $S = 0 &&
5312ab11 JH	23	case "$R" in
	24	$expect) echo happy ;;
	25	*) echo "Oops - $R is not $expect";
	26	false ;;
	27	esac
	28	'
	29	}
	30
	31	test_expect_success setup '
	32
	33	test_tick &&
3604e7c5	34	echo one >file && git add file && git commit -m initial &&
5be60078	35	one=$(git rev-parse HEAD) &&
5312ab11	36
024ab976 JH	37	git describe --always HEAD &&
024ab976 JH	38
5312ab11	39	test_tick &&
3604e7c5	40	echo two >file && git add file && git commit -m second &&
5be60078	41	two=$(git rev-parse HEAD) &&
5312ab11 JH	42
5312ab11 JH	43	test_tick &&
3604e7c5	44	echo three >file && git add file && git commit -m third &&
5312ab11 JH	45
5312ab11 JH	46	test_tick &&
3604e7c5	47	echo A >file && git add file && git commit -m A &&
5312ab11	48	test_tick &&
3604e7c5	49	git tag -a -m A A &&
5312ab11 JH	50
5312ab11 JH	51	test_tick &&
3604e7c5	52	echo c >file && git add file && git commit -m c &&
5312ab11	53	test_tick &&
3604e7c5	54	git tag c &&
5312ab11 JH	55
	56	git reset --hard $two &&
	57	test_tick &&
3604e7c5	58	echo B >side && git add side && git commit -m B &&
5312ab11	59	test_tick &&
3604e7c5	60	git tag -a -m B B &&
5312ab11 JH	61
5312ab11 JH	62	test_tick &&
3604e7c5	63	git merge -m Merged c &&
5be60078	64	merged=$(git rev-parse HEAD) &&
5312ab11 JH	65
	66	git reset --hard $two &&
	67	test_tick &&
3604e7c5	68	echo D >another && git add another && git commit -m D &&
5312ab11	69	test_tick &&
3604e7c5	70	git tag -a -m D D &&
03e8b541 SP	71	test_tick &&
03e8b541 SP	72	git tag -a -m R R &&
5312ab11 JH	73
	74	test_tick &&
	75	echo DD >another && git commit -a -m another &&
	76
	77	test_tick &&
3604e7c5	78	git tag e &&
5312ab11 JH	79
	80	test_tick &&
	81	echo DDD >another && git commit -a -m "yet another" &&
	82
	83	test_tick &&
3604e7c5	84	git merge -m Merged $merged &&
5312ab11 JH	85
5312ab11 JH	86	test_tick &&
5be60078	87	echo X >file && echo X >side && git add file side &&
3604e7c5	88	git commit -m x
5312ab11 JH	89
	90	'
	91
	92	check_describe A-* HEAD
	93	check_describe A-* HEAD^
03e8b541	94	check_describe R-* HEAD^^
5312ab11 JH	95	check_describe A-* HEAD^^2
5312ab11 JH	96	check_describe B HEAD^^2^
03e8b541	97	check_describe R-* HEAD^^^
5312ab11	98
7e425c4f SP	99	check_describe c-* --tags HEAD
	100	check_describe c-* --tags HEAD^
	101	check_describe e-* --tags HEAD^^
	102	check_describe c-* --tags HEAD^^2
5312ab11	103	check_describe B --tags HEAD^^2^
7a0d61bb TR	104	check_describe e --tags HEAD^^^
	105
	106	check_describe heads/master --all HEAD
	107	check_describe tags/c-* --all HEAD^
	108	check_describe tags/e --all HEAD^^^
5312ab11	109
518120e3	110	check_describe B-0-* --long HEAD^^2^
4d4c3e1c	111	check_describe A-3-* --long HEAD^^2
518120e3	112
e00dd1e9 MC	113	check_describe c-7-* --tags
	114	check_describe e-3-* --first-parent --tags
	115
2bd07065 SG	116	test_expect_success 'describe --contains defaults to HEAD without commit-ish' '
	117	echo "A^0" >expect &&
	118	git checkout A &&
	119	test_when_finished "git checkout -" &&
	120	git describe --contains >actual &&
	121	test_cmp expect actual
	122	'
	123
81dc223d SP	124	: >err.expect
	125	check_describe A --all A^0
	126	test_expect_success 'no warning was displayed for A' '
	127	test_cmp err.expect err.actual
	128	'
	129
3291fe40 SP	130	test_expect_success 'rename tag A to Q locally' '
	131	mv .git/refs/tags/A .git/refs/tags/Q
	132	'
	133	cat - >err.expect <<EOF
	134	warning: tag 'A' is really 'Q' here
	135	EOF
	136	check_describe A-* HEAD
b3e1900a JH	137	test_expect_success 'warning was displayed for Q' '
b3e1900a JH	138	test_i18ncmp err.expect err.actual
3291fe40 SP	139	'
	140	test_expect_success 'rename tag Q back to A' '
	141	mv .git/refs/tags/Q .git/refs/tags/A
	142	'
	143
d1b28f51 SP	144	test_expect_success 'pack tag refs' 'git pack-refs'
	145	check_describe A-* HEAD
	146
9f67d2e8 JP	147	check_describe "A-*[0-9a-f]" --dirty
	148
	149	test_expect_success 'set-up dirty work tree' '
	150	echo >>file
	151	'
	152
	153	check_describe "A-*[0-9a-f]-dirty" --dirty
	154
	155	check_describe "A-*[0-9a-f].mod" --dirty=.mod
	156
	157	test_expect_success 'describe --dirty HEAD' '
	158	test_must_fail git describe --dirty HEAD
	159	'
	160
4ed19a3c MD	161	test_expect_success 'set-up matching pattern tests' '
	162	git tag -a -m test-annotated test-annotated &&
	163	echo >>file &&
	164	test_tick &&
	165	git commit -a -m "one more" &&
	166	git tag test1-lightweight &&
	167	echo >>file &&
	168	test_tick &&
	169	git commit -a -m "yet another" &&
	170	git tag test2-lightweight &&
	171	echo >>file &&
	172	test_tick &&
	173	git commit -a -m "even more"
	174
	175	'
	176
	177	check_describe "test-annotated-" --match="test-"
	178
	179	check_describe "test1-lightweight-" --tags --match="test1-"
	180
	181	check_describe "test2-lightweight-" --tags --match="test2-"
	182
14d4642e SP	183	check_describe "test2-lightweight-" --long --tags --match="test2-" HEAD^
14d4642e SP	184
da769d29	185	check_describe "test2-lightweight-" --long --tags --match="test1-" --match="test2-*" HEAD^
43f8080e JK	186
	187	check_describe "test2-lightweight-" --long --tags --match="test1-" --no-match --match="test2-*" HEAD^
	188
da769d29 MK	189	check_describe "test1-lightweight-" --long --tags --match="test1-" --match="test3-*" HEAD
	190
	191	check_describe "test1-lightweight-" --long --tags --match="test3-" --match="test1-*" HEAD
	192
6d68b2ab MK	193	test_expect_success 'set-up branches' '
	194	git branch branch_A A &&
	195	git branch branch_C c &&
	196	git update-ref refs/remotes/origin/remote_branch_A "A^{commit}" &&
	197	git update-ref refs/remotes/origin/remote_branch_C "c^{commit}" &&
	198	git update-ref refs/original/original_branch_A test-annotated~2
	199	'
	200
	201	check_describe "heads/branch_A" --all --match="branch_" --exclude="branch_C" HEAD
	202
	203	check_describe "remotes/origin/remote_branch_A" --all --match="origin/remote_branch_" --exclude="origin/remote_branch_C" HEAD
	204
	205	check_describe "original/original_branch_A*" --all test-annotated~1
	206
	207	test_expect_success '--match does not work for other types' '
	208	test_must_fail git describe --all --match="original_branch_" test-annotated~1
	209	'
	210
	211	test_expect_success '--exclude does not work for other types' '
	212	R=$(git describe --all --exclude="any_pattern_even_not_matching" test-annotated~1) &&
	213	case "$R" in
	214	original_branch_A) echo "fail: Found unknown reference $R with --exclude"
	215	false;;
	216	*) echo ok: Found some known type;;
	217	esac
	218	'
	219
118aa4ac JH	220	test_expect_success 'name-rev with exact tags' '
	221	echo A >expect &&
	222	tag_object=$(git rev-parse refs/tags/A) &&
	223	git name-rev --tags --name-only $tag_object >actual &&
	224	test_cmp expect actual &&
	225
	226	echo "A^0" >expect &&
	227	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	228	git name-rev --tags --name-only $tagged_commit >actual &&
	229	test_cmp expect actual
	230	'
	231
a24fa652 MG	232	test_expect_success 'name-rev --all' '
	233	>expect.unsorted &&
	234	for rev in $(git rev-list --all)
	235	do
	236	git name-rev $rev >>expect.unsorted
	237	done &&
	238	sort <expect.unsorted >expect &&
	239	git name-rev --all >actual.unsorted &&
	240	sort <actual.unsorted >actual &&
	241	test_cmp expect actual
	242	'
	243
	244	test_expect_success 'name-rev --stdin' '
	245	>expect.unsorted &&
	246	for rev in $(git rev-list --all)
	247	do
	248	name=$(git name-rev --name-only $rev) &&
	249	echo "$rev ($name)" >>expect.unsorted
	250	done &&
	251	sort <expect.unsorted >expect &&
	252	git rev-list --all \| git name-rev --stdin >actual.unsorted &&
	253	sort <actual.unsorted >actual &&
	254	test_cmp expect actual
	255	'
	256
adfc1857 JH	257	test_expect_success 'describe --contains with the exact tags' '
	258	echo "A^0" >expect &&
	259	tag_object=$(git rev-parse refs/tags/A) &&
	260	git describe --contains $tag_object >actual &&
	261	test_cmp expect actual &&
	262
	263	echo "A^0" >expect &&
	264	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	265	git describe --contains $tagged_commit >actual &&
	266	test_cmp expect actual
	267	'
	268
43f8080e JK	269	test_expect_success 'describe --contains and --match' '
	270	echo "A^0" >expect &&
	271	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	272	test_must_fail git describe --contains --match="B" $tagged_commit &&
	273	git describe --contains --match="B" --match="A" $tagged_commit >actual &&
	274	test_cmp expect actual
	275	'
	276
77d21f29 JK	277	test_expect_success 'describe --exclude' '
	278	echo "c~1" >expect &&
	279	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	280	test_must_fail git describe --contains --match="B" $tagged_commit &&
	281	git describe --contains --match="?" --exclude="A" $tagged_commit >actual &&
	282	test_cmp expect actual
	283	'
	284
43f8080e JK	285	test_expect_success 'describe --contains and --no-match' '
	286	echo "A^0" >expect &&
	287	tagged_commit=$(git rev-parse "refs/tags/A^0") &&
	288	git describe --contains --match="B" --no-match $tagged_commit >actual &&
	289	test_cmp expect actual
	290	'
	291
b0176ce6 SB	292	test_expect_success 'setup and absorb a submodule' '
	293	test_create_repo sub1 &&
	294	test_commit -C sub1 initial &&
	295	git submodule add ./sub1 &&
	296	git submodule absorbgitdirs &&
	297	git commit -a -m "add submodule" &&
	298	git describe --dirty >expect &&
	299	git describe --broken >out &&
	300	test_cmp expect out
	301	'
	302
64127575	303	test_expect_success 'describe chokes on severely broken submodules' '
b0176ce6 SB	304	mv .git/modules/sub1/ .git/modules/sub_moved &&
	305	test_must_fail git describe --dirty
	306	'
2deda007	307	test_expect_success 'describe ignoring a broken submodule' '
b0176ce6	308	git describe --broken >out &&
ac9b2401	309	test_when_finished "mv .git/modules/sub_moved .git/modules/sub1" &&
b0176ce6 SB	310	grep broken out
	311	'
	312
644eb60b SB	313	test_expect_success 'describe a blob at a directly tagged commit' '
	314	echo "make it a unique blob" >file &&
	315	git add file && git commit -m "content in file" &&
	316	git tag -a -m "latest annotated tag" unique-file &&
	317	git describe HEAD:file >actual &&
	318	echo "unique-file:file" >expect &&
	319	test_cmp expect actual
	320	'
	321
	322	test_expect_success 'describe a blob with its first introduction' '
	323	git commit --allow-empty -m "empty commit" &&
	324	git rm file &&
	325	git commit -m "delete blob" &&
	326	git revert HEAD &&
	327	git commit --allow-empty -m "empty commit" &&
	328	git describe HEAD:file >actual &&
	329	echo "unique-file:file" >expect &&
	330	test_cmp expect actual
	331	'
	332
	333	test_expect_success 'describe directly tagged blob' '
	334	git tag test-blob unique-file:file &&
	335	git describe test-blob >actual &&
	336	echo "unique-file:file" >expect &&
	337	# suboptimal: we rather want to see "test-blob"
	338	test_cmp expect actual
	339	'
	340
	341	test_expect_success 'describe tag object' '
	342	git tag test-blob-1 -a -m msg unique-file:file &&
	343	test_must_fail git describe test-blob-1 2>actual &&
	344	test_i18ngrep "fatal: test-blob-1 is neither a commit nor blob" actual
	345	'
	346
31625b34 MG	347	test_expect_failure ULIMIT_STACK_SIZE 'name-rev works in a deep repo' '
	348	i=1 &&
	349	while test $i -lt 8000
	350	do
	351	echo "commit refs/heads/master
	352	committer A U Thor <author@example.com> $((1000000000 + $i * 100)) +0200
	353	data <<EOF
	354	commit #$i
	355	EOF"
	356	test $i = 1 && echo "from refs/heads/master^0"
	357	i=$(($i + 1))
	358	done \| git fast-import &&
	359	git checkout master &&
	360	git tag far-far-away HEAD^ &&
	361	echo "HEAD~4000 tags/far-far-away~3999" >expect &&
	362	git name-rev HEAD~4000 >actual &&
	363	test_cmp expect actual &&
	364	run_with_limited_stack git name-rev HEAD~4000 >actual &&
	365	test_cmp expect actual
	366	'
	367
	368	test_expect_success ULIMIT_STACK_SIZE 'describe works in a deep repo' '
	369	git tag -f far-far-away HEAD~7999 &&
	370	echo "far-far-away" >expect &&
	371	git describe --tags --abbrev=0 HEAD~4000 >actual &&
	372	test_cmp expect actual &&
	373	run_with_limited_stack git describe --tags --abbrev=0 HEAD~4000 >actual &&
	374	test_cmp expect actual
	375	'
	376
5312ab11	377	test_done