[thirdparty/git.git] / t / t5703-upload-pack-ref-in-want.sh

#!/bin/sh

test_description='upload-pack ref-in-want'

. ./test-lib.sh

get_actual_refs () {
	sed -n -e '/wanted-refs/,/0001/{
		/wanted-refs/d
		/0001/d
		p
		}' <out | test-tool pkt-line unpack >actual_refs
}

get_actual_commits () {
	test-tool pkt-line unpack-sideband <out >o.pack &&
	git index-pack o.pack &&
	git verify-pack -v o.idx >objs &&
	grep commit objs | cut -d" " -f1 | sort >actual_commits
}

check_output () {
	get_actual_refs &&
	test_cmp expected_refs actual_refs &&
	get_actual_commits &&
	sort expected_commits >sorted_commits &&
	test_cmp sorted_commits actual_commits
}

# c(o/foo) d(o/bar)
#        \ /
#         b   e(baz)  f(master)
#          \__  |  __/
#             \ | /
#               a
test_expect_success 'setup repository' '
	test_oid_init &&
	test_commit a &&
	git checkout -b o/foo &&
	test_commit b &&
	test_commit c &&
	git checkout -b o/bar b &&
	test_commit d &&
	git checkout -b baz a &&
	test_commit e &&
	git checkout master &&
	test_commit f
'

test_expect_success 'config controls ref-in-want advertisement' '
	test-tool serve-v2 --advertise-capabilities >out &&
	perl -ne "/ref-in-want/ and print" out >out.filter &&
	test_must_be_empty out.filter &&

	git config uploadpack.allowRefInWant false &&
	test-tool serve-v2 --advertise-capabilities >out &&
	perl -ne "/ref-in-want/ and print" out >out.filter &&
	test_must_be_empty out.filter &&

	git config uploadpack.allowRefInWant true &&
	test-tool serve-v2 --advertise-capabilities >out &&
	perl -ne "/ref-in-want/ and print" out >out.filter &&
	test_file_not_empty out.filter
'

test_expect_success 'invalid want-ref line' '
	test-tool pkt-line pack >in <<-EOF &&
	command=fetch
	0001
	no-progress
	want-ref refs/heads/non-existent
	done
	0000
	EOF

	test_must_fail test-tool serve-v2 --stateless-rpc 2>out <in &&
	grep "unknown ref" out
'

test_expect_success 'basic want-ref' '
	oid=$(git rev-parse f) &&
	cat >expected_refs <<-EOF &&
	$oid refs/heads/master
	EOF
	git rev-parse f >expected_commits &&

	oid=$(git rev-parse a) &&
	test-tool pkt-line pack >in <<-EOF &&
	command=fetch
	0001
	no-progress
	want-ref refs/heads/master
	have $oid
	done
	0000
	EOF

	test-tool serve-v2 --stateless-rpc >out <in &&
	check_output
'

test_expect_success 'multiple want-ref lines' '
	oid_c=$(git rev-parse c) &&
	oid_d=$(git rev-parse d) &&
	cat >expected_refs <<-EOF &&
	$oid_c refs/heads/o/foo
	$oid_d refs/heads/o/bar
	EOF
	git rev-parse c d >expected_commits &&

	oid=$(git rev-parse b) &&
	test-tool pkt-line pack >in <<-EOF &&
	command=fetch
	0001
	no-progress
	want-ref refs/heads/o/foo
	want-ref refs/heads/o/bar
	have $oid
	done
	0000
	EOF

	test-tool serve-v2 --stateless-rpc >out <in &&
	check_output
'

test_expect_success 'mix want and want-ref' '
	oid=$(git rev-parse f) &&
	cat >expected_refs <<-EOF &&
	$oid refs/heads/master
	EOF
	git rev-parse e f >expected_commits &&

	test-tool pkt-line pack >in <<-EOF &&
	command=fetch
	0001
	no-progress
	want-ref refs/heads/master
	want $(git rev-parse e)
	have $(git rev-parse a)
	done
	0000
	EOF

	test-tool serve-v2 --stateless-rpc >out <in &&
	check_output
'

test_expect_success 'want-ref with ref we already have commit for' '
	oid=$(git rev-parse c) &&
	cat >expected_refs <<-EOF &&
	$oid refs/heads/o/foo
	EOF
	>expected_commits &&

	oid=$(git rev-parse c) &&
	test-tool pkt-line pack >in <<-EOF &&
	command=fetch
	0001
	no-progress
	want-ref refs/heads/o/foo
	have $oid
	done
	0000
	EOF

	test-tool serve-v2 --stateless-rpc >out <in &&
	check_output
'

REPO="$(pwd)/repo"
LOCAL_PRISTINE="$(pwd)/local_pristine"

# $REPO
# c(o/foo) d(o/bar)
#        \ /
#         b   e(baz)  f(master)
#          \__  |  __/
#             \ | /
#               a
#
# $LOCAL_PRISTINE
#		s32(side)
#		|
#		.
#		.
#		|
#		a(master)
test_expect_success 'setup repos for fetching with ref-in-want tests' '
	(
		git init "$REPO" &&
		cd "$REPO" &&
		test_commit a &&

		# Local repo with many commits (so that negotiation will take
		# more than 1 request/response pair)
		rm -rf "$LOCAL_PRISTINE" &&
		git clone "file://$REPO" "$LOCAL_PRISTINE" &&
		cd "$LOCAL_PRISTINE" &&
		git checkout -b side &&
		test_commit_bulk --id=s 33 &&

		# Add novel commits to upstream
		git checkout master &&
		cd "$REPO" &&
		git checkout -b o/foo &&
		test_commit b &&
		test_commit c &&
		git checkout -b o/bar b &&
		test_commit d &&
		git checkout -b baz a &&
		test_commit e &&
		git checkout master &&
		test_commit f
	) &&
	git -C "$REPO" config uploadpack.allowRefInWant true &&
	git -C "$LOCAL_PRISTINE" config protocol.version 2
'

test_expect_success 'fetching with exact OID' '
	test_when_finished "rm -f log" &&

	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	oid=$(git -C "$REPO" rev-parse d) &&
	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
		"$oid":refs/heads/actual &&

	git -C "$REPO" rev-parse "d" >expected &&
	git -C local rev-parse refs/heads/actual >actual &&
	test_cmp expected actual &&
	grep "want $oid" log
'

test_expect_success 'fetching multiple refs' '
	test_when_finished "rm -f log" &&

	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin master baz &&

	git -C "$REPO" rev-parse "master" "baz" >expected &&
	git -C local rev-parse refs/remotes/origin/master refs/remotes/origin/baz >actual &&
	test_cmp expected actual &&
	grep "want-ref refs/heads/master" log &&
	grep "want-ref refs/heads/baz" log
'

test_expect_success 'fetching ref and exact OID' '
	test_when_finished "rm -f log" &&

	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	oid=$(git -C "$REPO" rev-parse b) &&
	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
		master "$oid":refs/heads/actual &&

	git -C "$REPO" rev-parse "master" "b" >expected &&
	git -C local rev-parse refs/remotes/origin/master refs/heads/actual >actual &&
	test_cmp expected actual &&
	grep "want $oid" log &&
	grep "want-ref refs/heads/master" log
'

test_expect_success 'fetching with wildcard that does not match any refs' '
	test_when_finished "rm -f log" &&

	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	git -C local fetch origin refs/heads/none*:refs/heads/* >out &&
	test_must_be_empty out
'

test_expect_success 'fetching with wildcard that matches multiple refs' '
	test_when_finished "rm -f log" &&

	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin refs/heads/o*:refs/heads/o* &&

	git -C "$REPO" rev-parse "o/foo" "o/bar" >expected &&
	git -C local rev-parse "o/foo" "o/bar" >actual &&
	test_cmp expected actual &&
	grep "want-ref refs/heads/o/foo" log &&
	grep "want-ref refs/heads/o/bar" log
'

. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd

REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
LOCAL_PRISTINE="$(pwd)/local_pristine"

test_expect_success 'setup repos for change-while-negotiating test' '
	(
		git init "$REPO" &&
		cd "$REPO" &&
		>.git/git-daemon-export-ok &&
		test_commit m1 &&
		git tag -d m1 &&

		# Local repo with many commits (so that negotiation will take
		# more than 1 request/response pair)
		rm -rf "$LOCAL_PRISTINE" &&
		git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
		cd "$LOCAL_PRISTINE" &&
		git checkout -b side &&
		test_commit_bulk --id=s 33 &&

		# Add novel commits to upstream
		git checkout master &&
		cd "$REPO" &&
		test_commit m2 &&
		test_commit m3 &&
		git tag -d m2 m3
	) &&
	git -C "$LOCAL_PRISTINE" remote set-url origin "http://127.0.0.1:$LIB_HTTPD_PORT/one_time_perl/repo" &&
	git -C "$LOCAL_PRISTINE" config protocol.version 2
'

inconsistency () {
	# Simulate that the server initially reports $2 as the ref
	# corresponding to $1, and after that, $1 as the ref corresponding to
	# $1. This corresponds to the real-life situation where the server's
	# repository appears to change during negotiation, for example, when
	# different servers in a load-balancing arrangement serve (stateless)
	# RPCs during a single negotiation.
	oid1=$(git -C "$REPO" rev-parse $1) &&
	oid2=$(git -C "$REPO" rev-parse $2) &&
	echo "s/$oid1/$oid2/" >"$HTTPD_ROOT_PATH/one-time-perl"
}

test_expect_success 'server is initially ahead - no ref in want' '
	git -C "$REPO" config uploadpack.allowRefInWant false &&
	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	inconsistency master $(test_oid numeric) &&
	test_must_fail git -C local fetch 2>err &&
	test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
'

test_expect_success 'server is initially ahead - ref in want' '
	git -C "$REPO" config uploadpack.allowRefInWant true &&
	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	inconsistency master $(test_oid numeric) &&
	git -C local fetch &&

	git -C "$REPO" rev-parse --verify master >expected &&
	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	test_cmp expected actual
'

test_expect_success 'server is initially behind - no ref in want' '
	git -C "$REPO" config uploadpack.allowRefInWant false &&
	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	inconsistency master "master^" &&
	git -C local fetch &&

	git -C "$REPO" rev-parse --verify "master^" >expected &&
	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	test_cmp expected actual
'

test_expect_success 'server is initially behind - ref in want' '
	git -C "$REPO" config uploadpack.allowRefInWant true &&
	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	inconsistency master "master^" &&
	git -C local fetch &&

	git -C "$REPO" rev-parse --verify "master" >expected &&
	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	test_cmp expected actual
'

test_expect_success 'server loses a ref - ref in want' '
	git -C "$REPO" config uploadpack.allowRefInWant true &&
	rm -rf local &&
	cp -r "$LOCAL_PRISTINE" local &&
	echo "s/master/raster/" >"$HTTPD_ROOT_PATH/one-time-perl" &&
	test_must_fail git -C local fetch 2>err &&

	test_i18ngrep "fatal: remote error: unknown ref refs/heads/raster" err
'

# DO NOT add non-httpd-specific tests here, because the last part of this
# test script is only executed when httpd is available and enabled.

test_done
Commit	Line	Data
516e2b76 BW	1	#!/bin/sh
	2
	3	test_description='upload-pack ref-in-want'
	4
	5	. ./test-lib.sh
	6
	7	get_actual_refs () {
	8	sed -n -e '/wanted-refs/,/0001/{
	9	/wanted-refs/d
	10	/0001/d
	11	p
8ea40cc5	12	}' <out \| test-tool pkt-line unpack >actual_refs
516e2b76 BW	13	}
	14
	15	get_actual_commits () {
84370e36	16	test-tool pkt-line unpack-sideband <out >o.pack &&
516e2b76	17	git index-pack o.pack &&
763b47ba	18	git verify-pack -v o.idx >objs &&
d341e080	19	grep commit objs \| cut -d" " -f1 \| sort >actual_commits
516e2b76 BW	20	}
	21
	22	check_output () {
	23	get_actual_refs &&
	24	test_cmp expected_refs actual_refs &&
	25	get_actual_commits &&
763b47ba DL	26	sort expected_commits >sorted_commits &&
763b47ba DL	27	test_cmp sorted_commits actual_commits
516e2b76 BW	28	}
	29
	30	# c(o/foo) d(o/bar)
	31	# \ /
	32	# b e(baz) f(master)
	33	# \__ \| __/
	34	# \ \| /
	35	# a
	36	test_expect_success 'setup repository' '
d341e080	37	test_oid_init &&
516e2b76 BW	38	test_commit a &&
	39	git checkout -b o/foo &&
	40	test_commit b &&
	41	test_commit c &&
	42	git checkout -b o/bar b &&
	43	test_commit d &&
	44	git checkout -b baz a &&
	45	test_commit e &&
	46	git checkout master &&
	47	test_commit f
	48	'
	49
	50	test_expect_success 'config controls ref-in-want advertisement' '
b7ce24d0	51	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	52	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	53	test_must_be_empty out.filter &&
516e2b76 BW	54
516e2b76 BW	55	git config uploadpack.allowRefInWant false &&
b7ce24d0	56	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	57	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	58	test_must_be_empty out.filter &&
516e2b76 BW	59
516e2b76 BW	60	git config uploadpack.allowRefInWant true &&
b7ce24d0	61	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	62	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	63	test_file_not_empty out.filter
516e2b76 BW	64	'
	65
	66	test_expect_success 'invalid want-ref line' '
8ea40cc5	67	test-tool pkt-line pack >in <<-EOF &&
516e2b76 BW	68	command=fetch
	69	0001
	70	no-progress
	71	want-ref refs/heads/non-existent
	72	done
	73	0000
	74	EOF
	75
b7ce24d0	76	test_must_fail test-tool serve-v2 --stateless-rpc 2>out <in &&
516e2b76 BW	77	grep "unknown ref" out
	78	'
	79
	80	test_expect_success 'basic want-ref' '
763b47ba	81	oid=$(git rev-parse f) &&
516e2b76	82	cat >expected_refs <<-EOF &&
763b47ba	83	$oid refs/heads/master
516e2b76	84	EOF
763b47ba	85	git rev-parse f >expected_commits &&
516e2b76	86
763b47ba	87	oid=$(git rev-parse a) &&
8ea40cc5	88	test-tool pkt-line pack >in <<-EOF &&
516e2b76 BW	89	command=fetch
	90	0001
	91	no-progress
	92	want-ref refs/heads/master
763b47ba	93	have $oid
516e2b76 BW	94	done
	95	0000
	96	EOF
	97
b7ce24d0	98	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	99	check_output
	100	'
	101
	102	test_expect_success 'multiple want-ref lines' '
763b47ba DL	103	oid_c=$(git rev-parse c) &&
763b47ba DL	104	oid_d=$(git rev-parse d) &&
516e2b76	105	cat >expected_refs <<-EOF &&
763b47ba DL	106	$oid_c refs/heads/o/foo
763b47ba DL	107	$oid_d refs/heads/o/bar
516e2b76	108	EOF
763b47ba	109	git rev-parse c d >expected_commits &&
516e2b76	110
763b47ba	111	oid=$(git rev-parse b) &&
8ea40cc5	112	test-tool pkt-line pack >in <<-EOF &&
516e2b76 BW	113	command=fetch
	114	0001
	115	no-progress
	116	want-ref refs/heads/o/foo
	117	want-ref refs/heads/o/bar
763b47ba	118	have $oid
516e2b76 BW	119	done
	120	0000
	121	EOF
	122
b7ce24d0	123	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	124	check_output
	125	'
	126
	127	test_expect_success 'mix want and want-ref' '
763b47ba	128	oid=$(git rev-parse f) &&
516e2b76	129	cat >expected_refs <<-EOF &&
763b47ba	130	$oid refs/heads/master
516e2b76	131	EOF
763b47ba	132	git rev-parse e f >expected_commits &&
516e2b76	133
8ea40cc5	134	test-tool pkt-line pack >in <<-EOF &&
516e2b76 BW	135	command=fetch
	136	0001
	137	no-progress
	138	want-ref refs/heads/master
	139	want $(git rev-parse e)
	140	have $(git rev-parse a)
	141	done
	142	0000
	143	EOF
	144
b7ce24d0	145	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	146	check_output
	147	'
	148
	149	test_expect_success 'want-ref with ref we already have commit for' '
763b47ba	150	oid=$(git rev-parse c) &&
516e2b76	151	cat >expected_refs <<-EOF &&
763b47ba	152	$oid refs/heads/o/foo
516e2b76 BW	153	EOF
	154	>expected_commits &&
	155
763b47ba	156	oid=$(git rev-parse c) &&
8ea40cc5	157	test-tool pkt-line pack >in <<-EOF &&
516e2b76 BW	158	command=fetch
	159	0001
	160	no-progress
	161	want-ref refs/heads/o/foo
763b47ba	162	have $oid
516e2b76 BW	163	done
	164	0000
	165	EOF
	166
b7ce24d0	167	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	168	check_output
	169	'
	170
73302051 BW	171	REPO="$(pwd)/repo"
	172	LOCAL_PRISTINE="$(pwd)/local_pristine"
	173
	174	# $REPO
	175	# c(o/foo) d(o/bar)
	176	# \ /
	177	# b e(baz) f(master)
	178	# \__ \| __/
	179	# \ \| /
	180	# a
	181	#
	182	# $LOCAL_PRISTINE
	183	# s32(side)
	184	# \|
	185	# .
	186	# .
	187	# \|
	188	# a(master)
	189	test_expect_success 'setup repos for fetching with ref-in-want tests' '
	190	(
	191	git init "$REPO" &&
	192	cd "$REPO" &&
	193	test_commit a &&
	194
	195	# Local repo with many commits (so that negotiation will take
	196	# more than 1 request/response pair)
	197	rm -rf "$LOCAL_PRISTINE" &&
	198	git clone "file://$REPO" "$LOCAL_PRISTINE" &&
	199	cd "$LOCAL_PRISTINE" &&
	200	git checkout -b side &&
ac093d55	201	test_commit_bulk --id=s 33 &&
73302051 BW	202
	203	# Add novel commits to upstream
	204	git checkout master &&
	205	cd "$REPO" &&
	206	git checkout -b o/foo &&
	207	test_commit b &&
	208	test_commit c &&
	209	git checkout -b o/bar b &&
	210	test_commit d &&
	211	git checkout -b baz a &&
	212	test_commit e &&
	213	git checkout master &&
	214	test_commit f
	215	) &&
	216	git -C "$REPO" config uploadpack.allowRefInWant true &&
	217	git -C "$LOCAL_PRISTINE" config protocol.version 2
	218	'
	219
	220	test_expect_success 'fetching with exact OID' '
	221	test_when_finished "rm -f log" &&
	222
	223	rm -rf local &&
	224	cp -r "$LOCAL_PRISTINE" local &&
763b47ba	225	oid=$(git -C "$REPO" rev-parse d) &&
73302051	226	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
763b47ba	227	"$oid":refs/heads/actual &&
73302051 BW	228
	229	git -C "$REPO" rev-parse "d" >expected &&
	230	git -C local rev-parse refs/heads/actual >actual &&
	231	test_cmp expected actual &&
763b47ba	232	grep "want $oid" log
73302051 BW	233	'
	234
	235	test_expect_success 'fetching multiple refs' '
	236	test_when_finished "rm -f log" &&
	237
	238	rm -rf local &&
	239	cp -r "$LOCAL_PRISTINE" local &&
	240	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin master baz &&
	241
	242	git -C "$REPO" rev-parse "master" "baz" >expected &&
	243	git -C local rev-parse refs/remotes/origin/master refs/remotes/origin/baz >actual &&
	244	test_cmp expected actual &&
	245	grep "want-ref refs/heads/master" log &&
	246	grep "want-ref refs/heads/baz" log
	247	'
	248
	249	test_expect_success 'fetching ref and exact OID' '
	250	test_when_finished "rm -f log" &&
	251
	252	rm -rf local &&
	253	cp -r "$LOCAL_PRISTINE" local &&
763b47ba	254	oid=$(git -C "$REPO" rev-parse b) &&
73302051	255	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
763b47ba	256	master "$oid":refs/heads/actual &&
73302051 BW	257
	258	git -C "$REPO" rev-parse "master" "b" >expected &&
	259	git -C local rev-parse refs/remotes/origin/master refs/heads/actual >actual &&
	260	test_cmp expected actual &&
763b47ba	261	grep "want $oid" log &&
73302051 BW	262	grep "want-ref refs/heads/master" log
	263	'
	264
	265	test_expect_success 'fetching with wildcard that does not match any refs' '
	266	test_when_finished "rm -f log" &&
	267
	268	rm -rf local &&
	269	cp -r "$LOCAL_PRISTINE" local &&
	270	git -C local fetch origin refs/heads/none:refs/heads/ >out &&
	271	test_must_be_empty out
	272	'
	273
	274	test_expect_success 'fetching with wildcard that matches multiple refs' '
	275	test_when_finished "rm -f log" &&
	276
	277	rm -rf local &&
	278	cp -r "$LOCAL_PRISTINE" local &&
	279	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin refs/heads/o:refs/heads/o &&
	280
	281	git -C "$REPO" rev-parse "o/foo" "o/bar" >expected &&
	282	git -C local rev-parse "o/foo" "o/bar" >actual &&
	283	test_cmp expected actual &&
	284	grep "want-ref refs/heads/o/foo" log &&
	285	grep "want-ref refs/heads/o/bar" log
	286	'
	287
7f005b0f SG	288	. "$TEST_DIRECTORY"/lib-httpd.sh
	289	start_httpd
	290
	291	REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
	292	LOCAL_PRISTINE="$(pwd)/local_pristine"
	293
	294	test_expect_success 'setup repos for change-while-negotiating test' '
	295	(
	296	git init "$REPO" &&
	297	cd "$REPO" &&
	298	>.git/git-daemon-export-ok &&
	299	test_commit m1 &&
	300	git tag -d m1 &&
	301
	302	# Local repo with many commits (so that negotiation will take
	303	# more than 1 request/response pair)
	304	rm -rf "$LOCAL_PRISTINE" &&
	305	git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
	306	cd "$LOCAL_PRISTINE" &&
	307	git checkout -b side &&
	308	test_commit_bulk --id=s 33 &&
	309
	310	# Add novel commits to upstream
	311	git checkout master &&
	312	cd "$REPO" &&
	313	test_commit m2 &&
	314	test_commit m3 &&
	315	git tag -d m2 m3
	316	) &&
eafff6e4	317	git -C "$LOCAL_PRISTINE" remote set-url origin "http://127.0.0.1:$LIB_HTTPD_PORT/one_time_perl/repo" &&
7f005b0f SG	318	git -C "$LOCAL_PRISTINE" config protocol.version 2
	319	'
	320
	321	inconsistency () {
	322	# Simulate that the server initially reports $2 as the ref
	323	# corresponding to $1, and after that, $1 as the ref corresponding to
	324	# $1. This corresponds to the real-life situation where the server's
	325	# repository appears to change during negotiation, for example, when
	326	# different servers in a load-balancing arrangement serve (stateless)
	327	# RPCs during a single negotiation.
eacaa1c1 DL	328	oid1=$(git -C "$REPO" rev-parse $1) &&
eacaa1c1 DL	329	oid2=$(git -C "$REPO" rev-parse $2) &&
eafff6e4	330	echo "s/$oid1/$oid2/" >"$HTTPD_ROOT_PATH/one-time-perl"
7f005b0f SG	331	}
	332
	333	test_expect_success 'server is initially ahead - no ref in want' '
	334	git -C "$REPO" config uploadpack.allowRefInWant false &&
	335	rm -rf local &&
	336	cp -r "$LOCAL_PRISTINE" local &&
d341e080	337	inconsistency master $(test_oid numeric) &&
7f005b0f SG	338	test_must_fail git -C local fetch 2>err &&
	339	test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
	340	'
	341
	342	test_expect_success 'server is initially ahead - ref in want' '
	343	git -C "$REPO" config uploadpack.allowRefInWant true &&
	344	rm -rf local &&
	345	cp -r "$LOCAL_PRISTINE" local &&
d341e080	346	inconsistency master $(test_oid numeric) &&
7f005b0f SG	347	git -C local fetch &&
	348
	349	git -C "$REPO" rev-parse --verify master >expected &&
	350	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	351	test_cmp expected actual
	352	'
	353
	354	test_expect_success 'server is initially behind - no ref in want' '
	355	git -C "$REPO" config uploadpack.allowRefInWant false &&
	356	rm -rf local &&
	357	cp -r "$LOCAL_PRISTINE" local &&
	358	inconsistency master "master^" &&
	359	git -C local fetch &&
	360
	361	git -C "$REPO" rev-parse --verify "master^" >expected &&
	362	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	363	test_cmp expected actual
	364	'
	365
	366	test_expect_success 'server is initially behind - ref in want' '
	367	git -C "$REPO" config uploadpack.allowRefInWant true &&
	368	rm -rf local &&
	369	cp -r "$LOCAL_PRISTINE" local &&
	370	inconsistency master "master^" &&
	371	git -C local fetch &&
	372
	373	git -C "$REPO" rev-parse --verify "master" >expected &&
	374	git -C local rev-parse --verify refs/remotes/origin/master >actual &&
	375	test_cmp expected actual
	376	'
	377
	378	test_expect_success 'server loses a ref - ref in want' '
	379	git -C "$REPO" config uploadpack.allowRefInWant true &&
	380	rm -rf local &&
	381	cp -r "$LOCAL_PRISTINE" local &&
eafff6e4	382	echo "s/master/raster/" >"$HTTPD_ROOT_PATH/one-time-perl" &&
7f005b0f SG	383	test_must_fail git -C local fetch 2>err &&
	384
	385	test_i18ngrep "fatal: remote error: unknown ref refs/heads/raster" err
	386	'
	387
	388	# DO NOT add non-httpd-specific tests here, because the last part of this
	389	# test script is only executed when httpd is available and enabled.
	390
516e2b76	391	test_done