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1#!/bin/sh
2
3test_description='fetch/clone from a shallow clone'
4
5GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
6export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
7
8. ./test-lib.sh
9
10commit() {
11 echo "$1" >tracked &&
12 git add tracked &&
13 git commit -m "$1"
14}
15
16test_expect_success 'setup' '
17 commit 1 &&
18 commit 2 &&
19 commit 3 &&
20 commit 4 &&
21 git config --global transfer.fsckObjects true &&
22 test_oid_cache <<-\EOF
23 perl sha1:s/0034shallow %s/0036unshallow %s/
24 perl sha256:s/004cshallow %s/004eunshallow %s/
25 EOF
26'
27
28test_expect_success 'setup shallow clone' '
29 git clone --no-local --depth=2 .git shallow &&
30 git --git-dir=shallow/.git log --format=%s >actual &&
31 test_write_lines 4 3 >expect &&
32 test_cmp expect actual
33'
34
35test_expect_success 'clone from shallow clone' '
36 git clone --no-local shallow shallow2 &&
37 (
38 cd shallow2 &&
39 git fsck &&
40 git log --format=%s >actual &&
41 test_write_lines 4 3 >expect &&
42 test_cmp expect actual
43 )
44'
45
46test_expect_success 'fetch from shallow clone' '
47 (
48 cd shallow &&
49 commit 5
50 ) &&
51 (
52 cd shallow2 &&
53 git fetch &&
54 git fsck &&
55 git log --format=%s origin/main >actual &&
56 test_write_lines 5 4 3 >expect &&
57 test_cmp expect actual
58 )
59'
60
61test_expect_success 'fetch --depth from shallow clone' '
62 (
63 cd shallow &&
64 commit 6
65 ) &&
66 (
67 cd shallow2 &&
68 git fetch --depth=2 &&
69 git fsck &&
70 git log --format=%s origin/main >actual &&
71 test_write_lines 6 5 >expect &&
72 test_cmp expect actual
73 )
74'
75
76test_expect_success 'fetch --unshallow from shallow clone' '
77 (
78 cd shallow2 &&
79 git fetch --unshallow &&
80 git fsck &&
81 git log --format=%s origin/main >actual &&
82 test_write_lines 6 5 4 3 >expect &&
83 test_cmp expect actual
84 )
85'
86
87test_expect_success 'fetch --unshallow from a full clone' '
88 git clone --no-local --depth=2 .git shallow3 &&
89 (
90 cd shallow3 &&
91 git log --format=%s >actual &&
92 test_write_lines 4 3 >expect &&
93 test_cmp expect actual &&
94 git -c fetch.writeCommitGraph fetch --unshallow &&
95 git log origin/main --format=%s >actual &&
96 test_write_lines 4 3 2 1 >expect &&
97 test_cmp expect actual
98 )
99'
100
101test_expect_success 'fetch something upstream has but hidden by clients shallow boundaries' '
102 # the blob "1" is available in .git but hidden by the
103 # shallow2/.git/shallow and it should be resent
104 ! git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null &&
105 echo 1 >1.t &&
106 git add 1.t &&
107 git commit -m add-1-back &&
108 (
109 cd shallow2 &&
110 git fetch ../.git +refs/heads/main:refs/remotes/top/main &&
111 git fsck &&
112 git log --format=%s top/main >actual &&
113 test_write_lines add-1-back 4 3 >expect &&
114 test_cmp expect actual
115 ) &&
116 git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null
117'
118
119test_expect_success 'fetch that requires changes in .git/shallow is filtered' '
120 (
121 cd shallow &&
122 git checkout --orphan no-shallow &&
123 commit no-shallow
124 ) &&
125 git init notshallow &&
126 (
127 cd notshallow &&
128 git fetch ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
129 git for-each-ref --format="%(refname)" >actual.refs &&
130 echo refs/remotes/shallow/no-shallow >expect.refs &&
131 test_cmp expect.refs actual.refs &&
132 git log --format=%s shallow/no-shallow >actual &&
133 echo no-shallow >expect &&
134 test_cmp expect actual
135 )
136'
137
138test_expect_success 'fetch --update-shallow' '
139 (
140 cd shallow &&
141 git checkout main &&
142 commit 7 &&
143 git tag -m foo heavy-tag HEAD^ &&
144 git tag light-tag HEAD^:tracked
145 ) &&
146 (
147 cd notshallow &&
148 git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
149 git fsck &&
150 git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
151 cat <<-\EOF >expect.refs &&
152 refs/remotes/shallow/main
153 refs/remotes/shallow/no-shallow
154 refs/tags/heavy-tag
155 refs/tags/light-tag
156 EOF
157 test_cmp expect.refs actual.refs &&
158 git log --format=%s shallow/main >actual &&
159 test_write_lines 7 6 5 4 3 >expect &&
160 test_cmp expect actual
161 )
162'
163
164test_expect_success 'fetch --update-shallow into a repo with submodules' '
165 test_config_global protocol.file.allow always &&
166
167 git init a-submodule &&
168 test_commit -C a-submodule foo &&
169
170 test_when_finished "rm -rf repo-with-sub" &&
171 git init repo-with-sub &&
172 git -C repo-with-sub submodule add ../a-submodule a-submodule &&
173 git -C repo-with-sub commit -m "added submodule" &&
174 git -C repo-with-sub fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/*
175'
176
177test_expect_success 'fetch --update-shallow a commit that is also a shallow point into a repo with submodules' '
178 test_when_finished "rm -rf repo-with-sub" &&
179 git init repo-with-sub &&
180 git -c protocol.file.allow=always -C repo-with-sub \
181 submodule add ../a-submodule a-submodule &&
182 git -C repo-with-sub commit -m "added submodule" &&
183
184 SHALLOW=$(cat shallow/.git/shallow) &&
185 git -C repo-with-sub fetch --update-shallow ../shallow/.git "$SHALLOW":refs/heads/a-shallow
186'
187
188test_expect_success 'fetch --update-shallow (with fetch.writeCommitGraph)' '
189 (
190 cd shallow &&
191 git checkout main &&
192 commit 8 &&
193 git tag -m foo heavy-tag-for-graph HEAD^ &&
194 git tag light-tag-for-graph HEAD^:tracked
195 ) &&
196 test_config -C notshallow fetch.writeCommitGraph true &&
197 (
198 cd notshallow &&
199 git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
200 git fsck &&
201 git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
202 cat <<-EOF >expect.refs &&
203 refs/remotes/shallow/main
204 refs/remotes/shallow/no-shallow
205 refs/tags/heavy-tag
206 refs/tags/heavy-tag-for-graph
207 refs/tags/light-tag
208 refs/tags/light-tag-for-graph
209 EOF
210 test_cmp expect.refs actual.refs &&
211 git log --format=%s shallow/main >actual &&
212 test_write_lines 8 7 6 5 4 3 >expect &&
213 test_cmp expect actual
214 )
215'
216
217test_expect_success POSIXPERM,SANITY 'shallow fetch from a read-only repo' '
218 cp -R .git read-only.git &&
219 test_when_finished "find read-only.git -type d -print | xargs chmod +w" &&
220 find read-only.git -print | xargs chmod -w &&
221 git clone --no-local --depth=2 read-only.git from-read-only &&
222 git --git-dir=from-read-only/.git log --format=%s >actual &&
223 test_write_lines add-1-back 4 >expect &&
224 test_cmp expect actual
225'
226
227test_expect_success '.git/shallow is edited by repack' '
228 git init shallow-server &&
229 test_commit -C shallow-server A &&
230 test_commit -C shallow-server B &&
231 git -C shallow-server checkout -b branch &&
232 test_commit -C shallow-server C &&
233 test_commit -C shallow-server E &&
234 test_commit -C shallow-server D &&
235 d="$(git -C shallow-server rev-parse --verify D^0)" &&
236 git -C shallow-server checkout main &&
237
238 git clone --depth=1 --no-tags --no-single-branch \
239 "file://$PWD/shallow-server" shallow-client &&
240
241 : now remove the branch and fetch with prune &&
242 git -C shallow-server branch -D branch &&
243 git -C shallow-client fetch --prune --depth=1 \
244 origin "+refs/heads/*:refs/remotes/origin/*" &&
245 git -C shallow-client repack -adfl &&
246 test_must_fail git -C shallow-client rev-parse --verify $d^0 &&
247 ! grep $d shallow-client/.git/shallow &&
248
249 git -C shallow-server branch branch-orig $d &&
250 git -C shallow-client fetch --prune --depth=2 \
251 origin "+refs/heads/*:refs/remotes/origin/*"
252'
253
254. "$TEST_DIRECTORY"/lib-httpd.sh
255start_httpd
256
257REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
258
259test_expect_success 'shallow fetches check connectivity before writing shallow file' '
260 rm -rf "$REPO" client &&
261
262 git init "$REPO" &&
263 test_commit -C "$REPO" one &&
264 test_commit -C "$REPO" two &&
265 test_commit -C "$REPO" three &&
266
267 git init client &&
268
269 # Use protocol v2 to ensure that shallow information is sent exactly
270 # once by the server, since we are planning to manipulate it.
271 git -C "$REPO" config protocol.version 2 &&
272 git -C client config protocol.version 2 &&
273
274 git -C client fetch --depth=2 "$HTTPD_URL/one_time_script/repo" main:a_branch &&
275
276 # Craft a situation in which the server sends back an unshallow request
277 # with an empty packfile. This is done by refetching with a shorter
278 # depth (to ensure that the packfile is empty), and overwriting the
279 # shallow line in the response with the unshallow line we want.
280 write_script "$HTTPD_ROOT_PATH/one-time-script" <<-EOF &&
281 sed "$(printf "$(test_oid perl)" "$(git -C "$REPO" rev-parse HEAD)" "$(git -C "$REPO" rev-parse HEAD^)")" "\$1"
282 EOF
283 test_must_fail env GIT_TEST_SIDEBAND_ALL=0 git -C client \
284 fetch --depth=1 "$HTTPD_URL/one_time_script/repo" \
285 main:a_branch &&
286
287 # Ensure that the one-time-script script was used.
288 ! test -e "$HTTPD_ROOT_PATH/one-time-script" &&
289
290 # Ensure that the resulting repo is consistent, despite our failure to
291 # fetch.
292 git -C client fsck
293'
294
295# DO NOT add non-httpd-specific tests here, because the last part of this
296# test script is only executed when httpd is available and enabled.
297
298test_done