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1#!/bin/sh
2
3test_description='behavior of diff when reading objects in a partial clone'
4
5. ./test-lib.sh
6
7test_expect_success 'git show batches blobs' '
8 test_when_finished "rm -rf server client trace" &&
9
10 test_create_repo server &&
11 echo a >server/a &&
12 echo b >server/b &&
13 git -C server add a b &&
14 git -C server commit -m x &&
15
16 test_config -C server uploadpack.allowfilter 1 &&
17 test_config -C server uploadpack.allowanysha1inwant 1 &&
18 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
19
20 # Ensure that there is exactly 1 negotiation by checking that there is
21 # only 1 "done" line sent. ("done" marks the end of negotiation.)
22 GIT_TRACE_PACKET="$(pwd)/trace" git -C client show HEAD &&
23 grep "fetch> done" trace >done_lines &&
24 test_line_count = 1 done_lines
25'
26
27test_expect_success 'diff batches blobs' '
28 test_when_finished "rm -rf server client trace" &&
29
30 test_create_repo server &&
31 echo a >server/a &&
32 echo b >server/b &&
33 git -C server add a b &&
34 git -C server commit -m x &&
35 echo c >server/c &&
36 echo d >server/d &&
37 git -C server add c d &&
38 git -C server commit -m x &&
39
40 test_config -C server uploadpack.allowfilter 1 &&
41 test_config -C server uploadpack.allowanysha1inwant 1 &&
42 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
43
44 # Ensure that there is exactly 1 negotiation by checking that there is
45 # only 1 "done" line sent. ("done" marks the end of negotiation.)
46 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
47 grep "fetch> done" trace >done_lines &&
48 test_line_count = 1 done_lines
49'
50
51test_expect_success 'diff skips same-OID blobs' '
52 test_when_finished "rm -rf server client trace" &&
53
54 test_create_repo server &&
55 echo a >server/a &&
56 echo b >server/b &&
57 git -C server add a b &&
58 git -C server commit -m x &&
59 echo another-a >server/a &&
60 git -C server add a &&
61 git -C server commit -m x &&
62
63 test_config -C server uploadpack.allowfilter 1 &&
64 test_config -C server uploadpack.allowanysha1inwant 1 &&
65 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
66
67 echo a | git hash-object --stdin >hash-old-a &&
68 echo another-a | git hash-object --stdin >hash-new-a &&
69 echo b | git hash-object --stdin >hash-b &&
70
71 # Ensure that only a and another-a are fetched.
72 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
73 grep "want $(cat hash-old-a)" trace &&
74 grep "want $(cat hash-new-a)" trace &&
75 ! grep "want $(cat hash-b)" trace
76'
77
78test_expect_success 'when fetching missing objects, diff skips GITLINKs' '
79 test_when_finished "rm -rf sub server client trace" &&
80 test_config_global protocol.file.allow always &&
81
82 test_create_repo sub &&
83 test_commit -C sub first &&
84
85 test_create_repo server &&
86 echo a >server/a &&
87 git -C server add a &&
88 git -C server submodule add "file://$(pwd)/sub" &&
89 git -C server commit -m x &&
90
91 test_commit -C server/sub second &&
92 echo another-a >server/a &&
93 git -C server add a sub &&
94 git -C server commit -m x &&
95
96 test_config -C server uploadpack.allowfilter 1 &&
97 test_config -C server uploadpack.allowanysha1inwant 1 &&
98 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
99
100 echo a | git hash-object --stdin >hash-old-a &&
101 echo another-a | git hash-object --stdin >hash-new-a &&
102
103 # Ensure that a and another-a are fetched, and check (by successful
104 # execution of the diff) that no invalid OIDs are sent.
105 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
106 grep "want $(cat hash-old-a)" trace &&
107 grep "want $(cat hash-new-a)" trace
108'
109
110test_expect_success 'diff with rename detection batches blobs' '
111 test_when_finished "rm -rf server client trace" &&
112
113 test_create_repo server &&
114 echo a >server/a &&
115 printf "b\nb\nb\nb\nb\n" >server/b &&
116 git -C server add a b &&
117 git -C server commit -m x &&
118 rm server/b &&
119 printf "b\nb\nb\nb\nbX\n" >server/c &&
120 git -C server add c &&
121 git -C server commit -a -m x &&
122
123 test_config -C server uploadpack.allowfilter 1 &&
124 test_config -C server uploadpack.allowanysha1inwant 1 &&
125 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
126
127 # Ensure that there is exactly 1 negotiation by checking that there is
128 # only 1 "done" line sent. ("done" marks the end of negotiation.)
129 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD >out &&
130 grep ":100644 100644.*R[0-9][0-9][0-9].*b.*c" out &&
131 grep "fetch> done" trace >done_lines &&
132 test_line_count = 1 done_lines
133'
134
135test_expect_success 'diff does not fetch anything if inexact rename detection is not needed' '
136 test_when_finished "rm -rf server client trace" &&
137
138 test_create_repo server &&
139 echo a >server/a &&
140 printf "b\nb\nb\nb\nb\n" >server/b &&
141 git -C server add a b &&
142 git -C server commit -m x &&
143 mv server/b server/c &&
144 git -C server add c &&
145 git -C server commit -a -m x &&
146
147 test_config -C server uploadpack.allowfilter 1 &&
148 test_config -C server uploadpack.allowanysha1inwant 1 &&
149 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
150
151 # Ensure no fetches.
152 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
153 test_path_is_missing trace
154'
155
156test_expect_success 'diff --break-rewrites fetches only if necessary, and batches blobs if it does' '
157 test_when_finished "rm -rf server client trace" &&
158
159 test_create_repo server &&
160 echo a >server/a &&
161 printf "b\nb\nb\nb\nb\n" >server/b &&
162 git -C server add a b &&
163 git -C server commit -m x &&
164 printf "c\nc\nc\nc\nc\n" >server/b &&
165 git -C server commit -a -m x &&
166
167 test_config -C server uploadpack.allowfilter 1 &&
168 test_config -C server uploadpack.allowanysha1inwant 1 &&
169 git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
170
171 # Ensure no fetches.
172 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
173 test_path_is_missing trace &&
174
175 # But with --break-rewrites, ensure that there is exactly 1 negotiation
176 # by checking that there is only 1 "done" line sent. ("done" marks the
177 # end of negotiation.)
178 GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --break-rewrites --raw -M HEAD^ HEAD &&
179 grep "fetch> done" trace >done_lines &&
180 test_line_count = 1 done_lines
181'
182
183test_done