[thirdparty/git.git] / t / t4053-diff-no-index.sh

#!/bin/sh

test_description='diff --no-index'

TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh

test_expect_success 'setup' '
	mkdir a &&
	mkdir b &&
	echo 1 >a/1 &&
	echo 2 >a/2 &&
	git init repo &&
	echo 1 >repo/a &&
	mkdir -p non/git &&
	echo 1 >non/git/a &&
	echo 1 >non/git/b
'

test_expect_success 'git diff --no-index --exit-code' '
	git diff --no-index --exit-code a/1 non/git/a &&
	test_expect_code 1 git diff --no-index --exit-code a/1 a/2
'

test_expect_success 'git diff --no-index directories' '
	test_expect_code 1 git diff --no-index a b >cnt &&
	test_line_count = 14 cnt
'

test_expect_success 'git diff --no-index relative path outside repo' '
	(
		cd repo &&
		test_expect_code 0 git diff --no-index a ../non/git/a &&
		test_expect_code 0 git diff --no-index ../non/git/a ../non/git/b
	)
'

test_expect_success 'git diff --no-index with broken index' '
	(
		cd repo &&
		echo broken >.git/index &&
		git diff --no-index a ../non/git/a
	)
'

test_expect_success 'git diff outside repo with broken index' '
	(
		cd repo &&
		git diff ../non/git/a ../non/git/b
	)
'

test_expect_success 'git diff --no-index executed outside repo gives correct error message' '
	(
		GIT_CEILING_DIRECTORIES=$TRASH_DIRECTORY/non &&
		export GIT_CEILING_DIRECTORIES &&
		cd non/git &&
		test_must_fail git diff --no-index a 2>actual.err &&
		test_i18ngrep "usage: git diff --no-index" actual.err
	)
'

test_expect_success 'diff D F and diff F D' '
	(
		cd repo &&
		echo in-repo >a &&
		echo non-repo >../non/git/a &&
		mkdir sub &&
		echo sub-repo >sub/a &&

		test_must_fail git diff --no-index sub/a ../non/git/a >expect &&
		test_must_fail git diff --no-index sub/a ../non/git/ >actual &&
		test_cmp expect actual &&

		test_must_fail git diff --no-index a ../non/git/a >expect &&
		test_must_fail git diff --no-index a ../non/git/ >actual &&
		test_cmp expect actual &&

		test_must_fail git diff --no-index ../non/git/a a >expect &&
		test_must_fail git diff --no-index ../non/git a >actual &&
		test_cmp expect actual
	)
'

test_expect_success 'turning a file into a directory' '
	(
		cd non/git &&
		mkdir d e e/sub &&
		echo 1 >d/sub &&
		echo 2 >e/sub/file &&
		printf "D\td/sub\nA\te/sub/file\n" >expect &&
		test_must_fail git diff --no-index --name-status d e >actual &&
		test_cmp expect actual
	)
'

test_expect_success 'diff from repo subdir shows real paths (explicit)' '
	echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
	test_expect_code 1 \
		git -C repo/sub \
		diff --no-index ../../non/git/a ../../non/git/b >actual &&
	head -n 1 <actual >actual.head &&
	test_cmp expect actual.head
'

test_expect_success 'diff from repo subdir shows real paths (implicit)' '
	echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
	test_expect_code 1 \
		git -C repo/sub \
		diff ../../non/git/a ../../non/git/b >actual &&
	head -n 1 <actual >actual.head &&
	test_cmp expect actual.head
'

test_expect_success 'diff --no-index from repo subdir respects config (explicit)' '
	echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
	test_config -C repo diff.noprefix true &&
	test_expect_code 1 \
		git -C repo/sub \
		diff --no-index ../../non/git/a ../../non/git/b >actual &&
	head -n 1 <actual >actual.head &&
	test_cmp expect actual.head
'

test_expect_success 'diff --no-index from repo subdir respects config (implicit)' '
	echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
	test_config -C repo diff.noprefix true &&
	test_expect_code 1 \
		git -C repo/sub \
		diff ../../non/git/a ../../non/git/b >actual &&
	head -n 1 <actual >actual.head &&
	test_cmp expect actual.head
'

test_expect_success 'diff --no-index from repo subdir with absolute paths' '
	cat <<-EOF >expect &&
	1	1	$(pwd)/non/git/{a => b}
	EOF
	test_expect_code 1 \
		git -C repo/sub diff --numstat \
		"$(pwd)/non/git/a" "$(pwd)/non/git/b" >actual &&
	test_cmp expect actual
'

test_expect_success 'diff --no-index allows external diff' '
	test_expect_code 1 \
		env GIT_EXTERNAL_DIFF="echo external ;:" \
		git diff --no-index non/git/a non/git/b >actual &&
	echo external >expect &&
	test_cmp expect actual
'

test_expect_success 'diff --no-index normalizes mode: no changes' '
	echo foo >x &&
	cp x y &&
	git diff --no-index x y >out &&
	test_must_be_empty out
'

test_expect_success POSIXPERM 'diff --no-index normalizes mode: chmod +x' '
	chmod +x y &&
	cat >expected <<-\EOF &&
	diff --git a/x b/y
	old mode 100644
	new mode 100755
	EOF
	test_expect_code 1 git diff --no-index x y >actual &&
	test_cmp expected actual
'

test_expect_success POSIXPERM 'diff --no-index normalizes: mode not like git mode' '
	chmod 666 x &&
	chmod 777 y &&
	cat >expected <<-\EOF &&
	diff --git a/x b/y
	old mode 100644
	new mode 100755
	EOF
	test_expect_code 1 git diff --no-index x y >actual &&
	test_cmp expected actual
'

test_expect_success POSIXPERM,SYMLINKS 'diff --no-index normalizes: mode not like git mode (symlink)' '
	ln -s y z &&
	X_OID=$(git hash-object --stdin <x) &&
	Z_OID=$(printf y | git hash-object --stdin) &&
	cat >expected <<-EOF &&
	diff --git a/x b/x
	deleted file mode 100644
	index $X_OID..$ZERO_OID
	--- a/x
	+++ /dev/null
	@@ -1 +0,0 @@
	-foo
	diff --git a/z b/z
	new file mode 120000
	index $ZERO_OID..$Z_OID
	--- /dev/null
	+++ b/z
	@@ -0,0 +1 @@
	+y
	\ No newline at end of file
	EOF
	test_expect_code 1 git -c core.abbrev=no diff --no-index x z >actual &&
	test_cmp expected actual
'

test_expect_success "diff --no-index treats '-' as stdin" '
	cat >expect <<-EOF &&
	diff --git a/- b/a/1
	index $ZERO_OID..$(git hash-object --stdin <a/1) 100644
	--- a/-
	+++ b/a/1
	@@ -1 +1 @@
	-x
	+1
	EOF

	test_write_lines x | test_expect_code 1 \
		git -c core.abbrev=no diff --no-index -- - a/1 >actual &&
	test_cmp expect actual &&

	test_write_lines 1 | git diff --no-index -- a/1 - >actual &&
	test_must_be_empty actual
'

test_expect_success "diff --no-index -R treats '-' as stdin" '
	cat >expect <<-EOF &&
	diff --git b/a/1 a/-
	index $(git hash-object --stdin <a/1)..$ZERO_OID 100644
	--- b/a/1
	+++ a/-
	@@ -1 +1 @@
	-1
	+x
	EOF

	test_write_lines x | test_expect_code 1 \
		git -c core.abbrev=no diff --no-index -R -- - a/1 >actual &&
	test_cmp expect actual &&

	test_write_lines 1 | git diff --no-index -R -- a/1 - >actual &&
	test_must_be_empty actual
'

test_expect_success 'diff --no-index refuses to diff stdin and a directory' '
	test_must_fail git diff --no-index -- - a </dev/null 2>err &&
	grep "fatal: cannot compare stdin to a directory" err
'

test_expect_success PIPE 'diff --no-index refuses to diff a named pipe and a directory' '
	test_when_finished "rm -f pipe" &&
	mkfifo pipe &&
	test_must_fail git diff --no-index -- pipe a 2>err &&
	grep "fatal: cannot compare a named pipe to a directory" err
'

test_expect_success PIPE,SYMLINKS 'diff --no-index reads from pipes' '
	test_when_finished "rm -f old new new-link" &&
	mkfifo old &&
	mkfifo new &&
	ln -s new new-link &&
	{
		(test_write_lines a b c >old) &
	} &&
	test_when_finished "kill $! || :" &&
	{
		(test_write_lines a x c >new) &
	} &&
	test_when_finished "kill $! || :" &&

	cat >expect <<-EOF &&
	diff --git a/old b/new-link
	--- a/old
	+++ b/new-link
	@@ -1,3 +1,3 @@
	 a
	-b
	+x
	 c
	EOF

	test_expect_code 1 git diff --no-index old new-link >actual &&
	test_cmp expect actual
'

test_done
Commit	Line	Data
f3999e03 BP	1	#!/bin/sh
	2
	3	test_description='diff --no-index'
	4
e5e37517	5	TEST_PASSES_SANITIZE_LEAK=true
f3999e03 BP	6	. ./test-lib.sh
	7
	8	test_expect_success 'setup' '
	9	mkdir a &&
	10	mkdir b &&
	11	echo 1 >a/1 &&
546e0fd9 JK	12	echo 2 >a/2 &&
	13	git init repo &&
	14	echo 1 >repo/a &&
	15	mkdir -p non/git &&
	16	echo 1 >non/git/a &&
	17	echo 1 >non/git/b
f3999e03 BP	18	'
f3999e03 BP	19
271cb303 ÆAB	20	test_expect_success 'git diff --no-index --exit-code' '
	21	git diff --no-index --exit-code a/1 non/git/a &&
	22	test_expect_code 1 git diff --no-index --exit-code a/1 a/2
	23	'
	24
f3999e03	25	test_expect_success 'git diff --no-index directories' '
c21fc9d0 JK	26	test_expect_code 1 git diff --no-index a b >cnt &&
c21fc9d0 JK	27	test_line_count = 14 cnt
f3999e03 BP	28	'
f3999e03 BP	29
546e0fd9 JK	30	test_expect_success 'git diff --no-index relative path outside repo' '
	31	(
	32	cd repo &&
	33	test_expect_code 0 git diff --no-index a ../non/git/a &&
	34	test_expect_code 0 git diff --no-index ../non/git/a ../non/git/b
	35	)
	36	'
	37
6df5762d TG	38	test_expect_success 'git diff --no-index with broken index' '
	39	(
	40	cd repo &&
	41	echo broken >.git/index &&
	42	git diff --no-index a ../non/git/a
	43	)
	44	'
	45
	46	test_expect_success 'git diff outside repo with broken index' '
	47	(
	48	cd repo &&
	49	git diff ../non/git/a ../non/git/b
	50	)
	51	'
	52
8a19dfa1 TG	53	test_expect_success 'git diff --no-index executed outside repo gives correct error message' '
	54	(
	55	GIT_CEILING_DIRECTORIES=$TRASH_DIRECTORY/non &&
	56	export GIT_CEILING_DIRECTORIES &&
	57	cd non/git &&
	58	test_must_fail git diff --no-index a 2>actual.err &&
16bb3d71	59	test_i18ngrep "usage: git diff --no-index" actual.err
8a19dfa1 TG	60	)
	61	'
	62
c9e1f2c7 JH	63	test_expect_success 'diff D F and diff F D' '
	64	(
	65	cd repo &&
	66	echo in-repo >a &&
	67	echo non-repo >../non/git/a &&
	68	mkdir sub &&
	69	echo sub-repo >sub/a &&
	70
	71	test_must_fail git diff --no-index sub/a ../non/git/a >expect &&
	72	test_must_fail git diff --no-index sub/a ../non/git/ >actual &&
	73	test_cmp expect actual &&
	74
	75	test_must_fail git diff --no-index a ../non/git/a >expect &&
	76	test_must_fail git diff --no-index a ../non/git/ >actual &&
	77	test_cmp expect actual &&
	78
	79	test_must_fail git diff --no-index ../non/git/a a >expect &&
	80	test_must_fail git diff --no-index ../non/git a >actual &&
	81	test_cmp expect actual
	82	)
	83	'
	84
06151739 JH	85	test_expect_success 'turning a file into a directory' '
	86	(
	87	cd non/git &&
	88	mkdir d e e/sub &&
	89	echo 1 >d/sub &&
	90	echo 2 >e/sub/file &&
	91	printf "D\td/sub\nA\te/sub/file\n" >expect &&
	92	test_must_fail git diff --no-index --name-status d e >actual &&
	93	test_cmp expect actual
	94	)
	95	'
	96
7d8930d9 JK	97	test_expect_success 'diff from repo subdir shows real paths (explicit)' '
	98	echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
	99	test_expect_code 1 \
	100	git -C repo/sub \
	101	diff --no-index ../../non/git/a ../../non/git/b >actual &&
	102	head -n 1 <actual >actual.head &&
	103	test_cmp expect actual.head
	104	'
	105
	106	test_expect_success 'diff from repo subdir shows real paths (implicit)' '
	107	echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
	108	test_expect_code 1 \
	109	git -C repo/sub \
	110	diff ../../non/git/a ../../non/git/b >actual &&
	111	head -n 1 <actual >actual.head &&
	112	test_cmp expect actual.head
	113	'
	114
28a4e580 JK	115	test_expect_success 'diff --no-index from repo subdir respects config (explicit)' '
	116	echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
	117	test_config -C repo diff.noprefix true &&
	118	test_expect_code 1 \
	119	git -C repo/sub \
	120	diff --no-index ../../non/git/a ../../non/git/b >actual &&
	121	head -n 1 <actual >actual.head &&
	122	test_cmp expect actual.head
	123	'
	124
	125	test_expect_success 'diff --no-index from repo subdir respects config (implicit)' '
	126	echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
	127	test_config -C repo diff.noprefix true &&
	128	test_expect_code 1 \
	129	git -C repo/sub \
	130	diff ../../non/git/a ../../non/git/b >actual &&
	131	head -n 1 <actual >actual.head &&
	132	test_cmp expect actual.head
	133	'
	134
ffd04e92 JS	135	test_expect_success 'diff --no-index from repo subdir with absolute paths' '
	136	cat <<-EOF >expect &&
	137	1 1 $(pwd)/non/git/{a => b}
	138	EOF
	139	test_expect_code 1 \
	140	git -C repo/sub diff --numstat \
	141	"$(pwd)/non/git/a" "$(pwd)/non/git/b" >actual &&
	142	test_cmp expect actual
	143	'
	144
287ab28b JK	145	test_expect_success 'diff --no-index allows external diff' '
	146	test_expect_code 1 \
	147	env GIT_EXTERNAL_DIFF="echo external ;:" \
	148	git diff --no-index non/git/a non/git/b >actual &&
	149	echo external >expect &&
	150	test_cmp expect actual
	151	'
	152
2be927f3 ÆAB	153	test_expect_success 'diff --no-index normalizes mode: no changes' '
	154	echo foo >x &&
	155	cp x y &&
	156	git diff --no-index x y >out &&
	157	test_must_be_empty out
	158	'
	159
	160	test_expect_success POSIXPERM 'diff --no-index normalizes mode: chmod +x' '
	161	chmod +x y &&
	162	cat >expected <<-\EOF &&
	163	diff --git a/x b/y
	164	old mode 100644
	165	new mode 100755
	166	EOF
	167	test_expect_code 1 git diff --no-index x y >actual &&
	168	test_cmp expected actual
	169	'
	170
	171	test_expect_success POSIXPERM 'diff --no-index normalizes: mode not like git mode' '
	172	chmod 666 x &&
	173	chmod 777 y &&
	174	cat >expected <<-\EOF &&
	175	diff --git a/x b/y
	176	old mode 100644
	177	new mode 100755
	178	EOF
	179	test_expect_code 1 git diff --no-index x y >actual &&
	180	test_cmp expected actual
	181	'
	182
	183	test_expect_success POSIXPERM,SYMLINKS 'diff --no-index normalizes: mode not like git mode (symlink)' '
	184	ln -s y z &&
	185	X_OID=$(git hash-object --stdin <x) &&
	186	Z_OID=$(printf y \| git hash-object --stdin) &&
	187	cat >expected <<-EOF &&
	188	diff --git a/x b/x
	189	deleted file mode 100644
	190	index $X_OID..$ZERO_OID
	191	--- a/x
	192	+++ /dev/null
	193	@@ -1 +0,0 @@
	194	-foo
	195	diff --git a/z b/z
	196	new file mode 120000
	197	index $ZERO_OID..$Z_OID
	198	--- /dev/null
	199	+++ b/z
	200	@@ -0,0 +1 @@
	201	+y
	202	\ No newline at end of file
	203	EOF
	204	test_expect_code 1 git -c core.abbrev=no diff --no-index x z >actual &&
	205	test_cmp expected actual
	206	'
	207
df521462 PW	208	test_expect_success "diff --no-index treats '-' as stdin" '
	209	cat >expect <<-EOF &&
	210	diff --git a/- b/a/1
	211	index $ZERO_OID..$(git hash-object --stdin <a/1) 100644
	212	--- a/-
	213	+++ b/a/1
	214	@@ -1 +1 @@
	215	-x
	216	+1
	217	EOF
	218
	219	test_write_lines x \| test_expect_code 1 \
	220	git -c core.abbrev=no diff --no-index -- - a/1 >actual &&
	221	test_cmp expect actual &&
	222
	223	test_write_lines 1 \| git diff --no-index -- a/1 - >actual &&
	224	test_must_be_empty actual
48944f21 RS	225	'
	226
	227	test_expect_success "diff --no-index -R treats '-' as stdin" '
	228	cat >expect <<-EOF &&
	229	diff --git b/a/1 a/-
	230	index $(git hash-object --stdin <a/1)..$ZERO_OID 100644
	231	--- b/a/1
	232	+++ a/-
	233	@@ -1 +1 @@
	234	-1
	235	+x
	236	EOF
	237
	238	test_write_lines x \| test_expect_code 1 \
	239	git -c core.abbrev=no diff --no-index -R -- - a/1 >actual &&
	240	test_cmp expect actual &&
	241
	242	test_write_lines 1 \| git diff --no-index -R -- a/1 - >actual &&
	243	test_must_be_empty actual
df521462 PW	244	'
df521462 PW	245
49819845 PW	246	test_expect_success 'diff --no-index refuses to diff stdin and a directory' '
	247	test_must_fail git diff --no-index -- - a </dev/null 2>err &&
	248	grep "fatal: cannot compare stdin to a directory" err
	249	'
	250
1e3f2654 PW	251	test_expect_success PIPE 'diff --no-index refuses to diff a named pipe and a directory' '
	252	test_when_finished "rm -f pipe" &&
	253	mkfifo pipe &&
1e3f2654 PW	254	test_must_fail git diff --no-index -- pipe a 2>err &&
	255	grep "fatal: cannot compare a named pipe to a directory" err
	256	'
	257
	258	test_expect_success PIPE,SYMLINKS 'diff --no-index reads from pipes' '
	259	test_when_finished "rm -f old new new-link" &&
	260	mkfifo old &&
	261	mkfifo new &&
	262	ln -s new new-link &&
	263	{
	264	(test_write_lines a b c >old) &
	265	} &&
231e86c1	266	test_when_finished "kill $! \|\| :" &&
1e3f2654 PW	267	{
	268	(test_write_lines a x c >new) &
	269	} &&
231e86c1	270	test_when_finished "kill $! \|\| :" &&
1e3f2654 PW	271
	272	cat >expect <<-EOF &&
	273	diff --git a/old b/new-link
	274	--- a/old
	275	+++ b/new-link
	276	@@ -1,3 +1,3 @@
	277	a
	278	-b
	279	+x
	280	c
	281	EOF
	282
	283	test_expect_code 1 git diff --no-index old new-link >actual &&
	284	test_cmp expect actual
	285	'
	286
f3999e03	287	test_done