t/t5537-fetch-shallow.sh

   1 #!/bin/sh
   2
   3 test_description='fetch/clone from a shallow clone'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7
   8 . ./test-lib.sh
   9
  10 commit() {
  11         echo "$1" >tracked &&
  12         git add tracked &&
  13         git commit -m "$1"
  14 }
  15
  16 test_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
  28 test_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
  35 test_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
  46 test_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
  61 test_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
  76 test_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
  87 test_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
 101 test_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
 119 test_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
 138 test_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
 164 test_expect_success 'fetch --update-shallow into a repo with submodules' '
 165         git init a-submodule &&
 166         test_commit -C a-submodule foo &&
 167         git init repo-with-sub &&
 168         git -C repo-with-sub submodule add ../a-submodule a-submodule &&
 169         git -C repo-with-sub commit -m "added submodule" &&
 170         git -C repo-with-sub fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/*
 171 '
 172
 173 test_expect_success 'fetch --update-shallow (with fetch.writeCommitGraph)' '
 174         (
 175         cd shallow &&
 176         git checkout main &&
 177         commit 8 &&
 178         git tag -m foo heavy-tag-for-graph HEAD^ &&
 179         git tag light-tag-for-graph HEAD^:tracked
 180         ) &&
 181         test_config -C notshallow fetch.writeCommitGraph true &&
 182         (
 183         cd notshallow &&
 184         git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
 185         git fsck &&
 186         git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
 187         cat <<-EOF >expect.refs &&
 188         refs/remotes/shallow/main
 189         refs/remotes/shallow/no-shallow
 190         refs/tags/heavy-tag
 191         refs/tags/heavy-tag-for-graph
 192         refs/tags/light-tag
 193         refs/tags/light-tag-for-graph
 194         EOF
 195         test_cmp expect.refs actual.refs &&
 196         git log --format=%s shallow/main >actual &&
 197         test_write_lines 8 7 6 5 4 3 >expect &&
 198         test_cmp expect actual
 199         )
 200 '
 201
 202 test_expect_success POSIXPERM,SANITY 'shallow fetch from a read-only repo' '
 203         cp -R .git read-only.git &&
 204         test_when_finished "find read-only.git -type d -print | xargs chmod +w" &&
 205         find read-only.git -print | xargs chmod -w &&
 206         git clone --no-local --depth=2 read-only.git from-read-only &&
 207         git --git-dir=from-read-only/.git log --format=%s >actual &&
 208         test_write_lines add-1-back 4 >expect &&
 209         test_cmp expect actual
 210 '
 211
 212 test_expect_success '.git/shallow is edited by repack' '
 213         git init shallow-server &&
 214         test_commit -C shallow-server A &&
 215         test_commit -C shallow-server B &&
 216         git -C shallow-server checkout -b branch &&
 217         test_commit -C shallow-server C &&
 218         test_commit -C shallow-server E &&
 219         test_commit -C shallow-server D &&
 220         d="$(git -C shallow-server rev-parse --verify D^0)" &&
 221         git -C shallow-server checkout main &&
 222
 223         git clone --depth=1 --no-tags --no-single-branch \
 224                 "file://$PWD/shallow-server" shallow-client &&
 225
 226         : now remove the branch and fetch with prune &&
 227         git -C shallow-server branch -D branch &&
 228         git -C shallow-client fetch --prune --depth=1 \
 229                 origin "+refs/heads/*:refs/remotes/origin/*" &&
 230         git -C shallow-client repack -adfl &&
 231         test_must_fail git -C shallow-client rev-parse --verify $d^0 &&
 232         ! grep $d shallow-client/.git/shallow &&
 233
 234         git -C shallow-server branch branch-orig $d &&
 235         git -C shallow-client fetch --prune --depth=2 \
 236                 origin "+refs/heads/*:refs/remotes/origin/*"
 237 '
 238
 239 . "$TEST_DIRECTORY"/lib-httpd.sh
 240 start_httpd
 241
 242 REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
 243
 244 test_expect_success 'shallow fetches check connectivity before writing shallow file' '
 245         rm -rf "$REPO" client &&
 246
 247         git init "$REPO" &&
 248         test_commit -C "$REPO" one &&
 249         test_commit -C "$REPO" two &&
 250         test_commit -C "$REPO" three &&
 251
 252         git init client &&
 253
 254         # Use protocol v2 to ensure that shallow information is sent exactly
 255         # once by the server, since we are planning to manipulate it.
 256         git -C "$REPO" config protocol.version 2 &&
 257         git -C client config protocol.version 2 &&
 258
 259         git -C client fetch --depth=2 "$HTTPD_URL/one_time_perl/repo" main:a_branch &&
 260
 261         # Craft a situation in which the server sends back an unshallow request
 262         # with an empty packfile. This is done by refetching with a shorter
 263         # depth (to ensure that the packfile is empty), and overwriting the
 264         # shallow line in the response with the unshallow line we want.
 265         printf "$(test_oid perl)" \
 266                "$(git -C "$REPO" rev-parse HEAD)" \
 267                "$(git -C "$REPO" rev-parse HEAD^)" \
 268                >"$HTTPD_ROOT_PATH/one-time-perl" &&
 269         test_must_fail env GIT_TEST_SIDEBAND_ALL=0 git -C client \
 270                 fetch --depth=1 "$HTTPD_URL/one_time_perl/repo" \
 271                 main:a_branch &&
 272
 273         # Ensure that the one-time-perl script was used.
 274         ! test -e "$HTTPD_ROOT_PATH/one-time-perl" &&
 275
 276         # Ensure that the resulting repo is consistent, despite our failure to
 277         # fetch.
 278         git -C client fsck
 279 '
 280
 281 # DO NOT add non-httpd-specific tests here, because the last part of this
 282 # test script is only executed when httpd is available and enabled.
 283
 284 test_done