summaryrefslogtreecommitdiff
path: root/t/t4067-diff-partial-clone.sh
blob: ef8e0e9cb01f1aae472c7606e33a5ef7d24a08f4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
#!/bin/sh

test_description='behavior of diff when reading objects in a partial clone'

. ./test-lib.sh

test_expect_success 'git show batches blobs' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	echo b >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	# Ensure that there is exactly 1 negotiation by checking that there is
	# only 1 "done" line sent. ("done" marks the end of negotiation.)
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client show HEAD &&
	grep "git> done" trace >done_lines &&
	test_line_count = 1 done_lines
'

test_expect_success 'diff batches blobs' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	echo b >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&
	echo c >server/c &&
	echo d >server/d &&
	git -C server add c d &&
	git -C server commit -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	# Ensure that there is exactly 1 negotiation by checking that there is
	# only 1 "done" line sent. ("done" marks the end of negotiation.)
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
	grep "git> done" trace >done_lines &&
	test_line_count = 1 done_lines
'

test_expect_success 'diff skips same-OID blobs' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	echo b >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&
	echo another-a >server/a &&
	git -C server add a &&
	git -C server commit -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	echo a | git hash-object --stdin >hash-old-a &&
	echo another-a | git hash-object --stdin >hash-new-a &&
	echo b | git hash-object --stdin >hash-b &&

	# Ensure that only a and another-a are fetched.
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
	grep "want $(cat hash-old-a)" trace &&
	grep "want $(cat hash-new-a)" trace &&
	! grep "want $(cat hash-b)" trace
'

test_expect_success 'when fetching missing objects, diff skips GITLINKs' '
	test_when_finished "rm -rf sub server client trace" &&

	test_create_repo sub &&
	test_commit -C sub first &&

	test_create_repo server &&
	echo a >server/a &&
	git -C server add a &&
	git -C server submodule add "file://$(pwd)/sub" &&
	git -C server commit -m x &&

	test_commit -C server/sub second &&
	echo another-a >server/a &&
	git -C server add a sub &&
	git -C server commit -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	echo a | git hash-object --stdin >hash-old-a &&
	echo another-a | git hash-object --stdin >hash-new-a &&

	# Ensure that a and another-a are fetched, and check (by successful
	# execution of the diff) that no invalid OIDs are sent.
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
	grep "want $(cat hash-old-a)" trace &&
	grep "want $(cat hash-new-a)" trace
'

test_expect_success 'diff with rename detection batches blobs' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	printf "b\nb\nb\nb\nb\n" >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&
	rm server/b &&
	printf "b\nb\nb\nb\nbX\n" >server/c &&
	git -C server add c &&
	git -C server commit -a -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	# Ensure that there is exactly 1 negotiation by checking that there is
	# only 1 "done" line sent. ("done" marks the end of negotiation.)
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD >out &&
	grep ":100644 100644.*R[0-9][0-9][0-9].*b.*c" out &&
	grep "git> done" trace >done_lines &&
	test_line_count = 1 done_lines
'

test_expect_success 'diff does not fetch anything if inexact rename detection is not needed' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	printf "b\nb\nb\nb\nb\n" >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&
	mv server/b server/c &&
	git -C server add c &&
	git -C server commit -a -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	# Ensure no fetches.
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
	! test_path_exists trace
'

test_expect_success 'diff --break-rewrites fetches only if necessary, and batches blobs if it does' '
	test_when_finished "rm -rf server client trace" &&

	test_create_repo server &&
	echo a >server/a &&
	printf "b\nb\nb\nb\nb\n" >server/b &&
	git -C server add a b &&
	git -C server commit -m x &&
	printf "c\nc\nc\nc\nc\n" >server/b &&
	git -C server commit -a -m x &&

	test_config -C server uploadpack.allowfilter 1 &&
	test_config -C server uploadpack.allowanysha1inwant 1 &&
	git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&

	# Ensure no fetches.
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
	! test_path_exists trace &&

	# But with --break-rewrites, ensure that there is exactly 1 negotiation
	# by checking that there is only 1 "done" line sent. ("done" marks the
	# end of negotiation.)
	GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --break-rewrites --raw -M HEAD^ HEAD &&
	grep "git> done" trace >done_lines &&
	test_line_count = 1 done_lines
'

test_done