t/t5537-fetch-shallow.sh

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