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