t/t7408-submodule-reference.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009, Red Hat Inc, Author: Michael S. Tsirkin (mst@redhat.com)
   4 #
   5
   6 test_description='test clone --reference'
   7
   8 TEST_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 base_dir=$(pwd)
  12
  13 test_alternate_is_used () {
  14         alternates_file="$1" &&
  15         working_dir="$2" &&
  16         test_line_count = 1 "$alternates_file" &&
  17         echo "0 objects, 0 kilobytes" >expect &&
  18         git -C "$working_dir" count-objects >actual &&
  19         test_cmp expect actual
  20 }
  21
  22 test_expect_success 'setup' '
  23         git config --global protocol.file.allow always
  24 '
  25
  26 test_expect_success 'preparing first repository' '
  27         test_create_repo A &&
  28         (
  29                 cd A &&
  30                 echo first >file1 &&
  31                 git add file1 &&
  32                 git commit -m A-initial
  33         )
  34 '
  35
  36 test_expect_success 'preparing second repository' '
  37         git clone A B &&
  38         (
  39                 cd B &&
  40                 echo second >file2 &&
  41                 git add file2 &&
  42                 git commit -m B-addition &&
  43                 git repack -a -d &&
  44                 git prune
  45         )
  46 '
  47
  48 test_expect_success 'preparing superproject' '
  49         test_create_repo super &&
  50         (
  51                 cd super &&
  52                 echo file >file &&
  53                 git add file &&
  54                 git commit -m B-super-initial
  55         )
  56 '
  57
  58 test_expect_success 'submodule add --reference uses alternates' '
  59         (
  60                 cd super &&
  61                 git submodule add --reference ../B "file://$base_dir/A" sub &&
  62                 git commit -m B-super-added &&
  63                 git repack -ad
  64         ) &&
  65         test_alternate_is_used super/.git/modules/sub/objects/info/alternates super/sub
  66 '
  67
  68 test_expect_success 'submodule add --reference with --dissociate does not use alternates' '
  69         (
  70                 cd super &&
  71                 git submodule add --reference ../B --dissociate "file://$base_dir/A" sub-dissociate &&
  72                 git commit -m B-super-added &&
  73                 git repack -ad
  74         ) &&
  75         test_path_is_missing super/.git/modules/sub-dissociate/objects/info/alternates
  76 '
  77
  78 test_expect_success 'that reference gets used with add' '
  79         (
  80                 cd super/sub &&
  81                 echo "0 objects, 0 kilobytes" >expected &&
  82                 git count-objects >current &&
  83                 diff expected current
  84         )
  85 '
  86
  87 # The tests up to this point, and repositories created by them
  88 # (A, B, super and super/sub), are about setting up the stage
  89 # for subsequent tests and meant to be kept throughout the
  90 # remainder of the test.
  91 # Tests from here on, if they create their own test repository,
  92 # are expected to clean after themselves.
  93
  94 test_expect_success 'updating superproject keeps alternates' '
  95         test_when_finished "rm -rf super-clone" &&
  96         git clone super super-clone &&
  97         git -C super-clone submodule update --init --reference ../B &&
  98         test_alternate_is_used super-clone/.git/modules/sub/objects/info/alternates super-clone/sub
  99 '
 100
 101 test_expect_success 'updating superproject with --dissociate does not keep alternates' '
 102         test_when_finished "rm -rf super-clone" &&
 103         git clone super super-clone &&
 104         git -C super-clone submodule update --init --reference ../B --dissociate &&
 105         test_path_is_missing super-clone/.git/modules/sub/objects/info/alternates
 106 '
 107
 108 test_expect_success 'submodules use alternates when cloning a superproject' '
 109         test_when_finished "rm -rf super-clone" &&
 110         git clone --reference super --recursive super super-clone &&
 111         (
 112                 cd super-clone &&
 113                 # test superproject has alternates setup correctly
 114                 test_alternate_is_used .git/objects/info/alternates . &&
 115                 # test submodule has correct setup
 116                 test_alternate_is_used .git/modules/sub/objects/info/alternates sub
 117         )
 118 '
 119
 120 test_expect_success 'missing submodule alternate fails clone and submodule update' '
 121         test_when_finished "rm -rf super-clone" &&
 122         git clone super super2 &&
 123         test_must_fail git clone --recursive --reference super2 super2 super-clone &&
 124         (
 125                 cd super-clone &&
 126                 # test superproject has alternates setup correctly
 127                 test_alternate_is_used .git/objects/info/alternates . &&
 128                 # update of the submodule succeeds
 129                 test_must_fail git submodule update --init &&
 130                 # and we have no alternates:
 131                 test_path_is_missing .git/modules/sub/objects/info/alternates &&
 132                 test_path_is_missing sub/file1
 133         )
 134 '
 135
 136 test_expect_success 'ignoring missing submodule alternates passes clone and submodule update' '
 137         test_when_finished "rm -rf super-clone" &&
 138         git clone --reference-if-able super2 --recursive super2 super-clone &&
 139         (
 140                 cd super-clone &&
 141                 # test superproject has alternates setup correctly
 142                 test_alternate_is_used .git/objects/info/alternates . &&
 143                 # update of the submodule succeeds
 144                 git submodule update --init &&
 145                 # and we have no alternates:
 146                 test_path_is_missing .git/modules/sub/objects/info/alternates &&
 147                 test_path_is_file sub/file1
 148         )
 149 '
 150
 151 test_expect_success 'preparing second superproject with a nested submodule plus partial clone' '
 152         test_create_repo supersuper &&
 153         (
 154                 cd supersuper &&
 155                 echo "I am super super." >file &&
 156                 git add file &&
 157                 git commit -m B-super-super-initial &&
 158                 git submodule add "file://$base_dir/super" subwithsub &&
 159                 git commit -m B-super-super-added &&
 160                 git submodule update --init --recursive &&
 161                 git repack -ad
 162         ) &&
 163         git clone supersuper supersuper2 &&
 164         (
 165                 cd supersuper2 &&
 166                 git submodule update --init
 167         )
 168 '
 169
 170 # At this point there are three root-level positories: A, B, super and super2
 171
 172 test_expect_success 'nested submodule alternate in works and is actually used' '
 173         test_when_finished "rm -rf supersuper-clone" &&
 174         git clone --recursive --reference supersuper supersuper supersuper-clone &&
 175         (
 176                 cd supersuper-clone &&
 177                 # test superproject has alternates setup correctly
 178                 test_alternate_is_used .git/objects/info/alternates . &&
 179                 # immediate submodule has alternate:
 180                 test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
 181                 # nested submodule also has alternate:
 182                 test_alternate_is_used .git/modules/subwithsub/modules/sub/objects/info/alternates subwithsub/sub
 183         )
 184 '
 185
 186 check_that_two_of_three_alternates_are_used() {
 187         test_alternate_is_used .git/objects/info/alternates . &&
 188         # immediate submodule has alternate:
 189         test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
 190         # but nested submodule has no alternate:
 191         test_path_is_missing .git/modules/subwithsub/modules/sub/objects/info/alternates
 192 }
 193
 194
 195 test_expect_success 'missing nested submodule alternate fails clone and submodule update' '
 196         test_when_finished "rm -rf supersuper-clone" &&
 197         test_must_fail git clone --recursive --reference supersuper2 supersuper2 supersuper-clone &&
 198         (
 199                 cd supersuper-clone &&
 200                 check_that_two_of_three_alternates_are_used &&
 201                 # update of the submodule fails
 202                 cat >expect <<-\EOF &&
 203                 fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
 204                 Failed to clone '\''sub'\''. Retry scheduled
 205                 fatal: submodule '\''sub-dissociate'\'' cannot add alternate: path ... does not exist
 206                 Failed to clone '\''sub-dissociate'\''. Retry scheduled
 207                 fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
 208                 Failed to clone '\''sub'\'' a second time, aborting
 209                 fatal: Failed to recurse into submodule path ...
 210                 EOF
 211                 test_must_fail git submodule update --init --recursive 2>err &&
 212                 grep -e fatal: -e ^Failed err >actual.raw &&
 213                 sed -e "s/path $SQ[^$SQ]*$SQ/path .../" <actual.raw >actual &&
 214                 test_cmp expect actual
 215         )
 216 '
 217
 218 test_expect_success 'missing nested submodule alternate in --reference-if-able mode' '
 219         test_when_finished "rm -rf supersuper-clone" &&
 220         git clone --recursive --reference-if-able supersuper2 supersuper2 supersuper-clone &&
 221         (
 222                 cd supersuper-clone &&
 223                 check_that_two_of_three_alternates_are_used &&
 224                 # update of the submodule succeeds
 225                 git submodule update --init --recursive
 226         )
 227 '
 228
 229 test_done