t/t0612-reftable-jgit-compatibility.sh

   1 #!/bin/sh
   2
   3 test_description='reftables are compatible with JGit'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7 GIT_TEST_DEFAULT_REF_FORMAT=reftable
   8 export GIT_TEST_DEFAULT_REF_FORMAT
   9
  10 # JGit does not support the 'link' DIRC extension.
  11 GIT_TEST_SPLIT_INDEX=0
  12 export GIT_TEST_SPLIT_INDEX
  13
  14 . ./test-lib.sh
  15
  16 if ! test_have_prereq JGIT
  17 then
  18         skip_all='skipping reftable JGit tests; JGit is not present in PATH'
  19         test_done
  20 fi
  21
  22 if ! test_have_prereq SHA1
  23 then
  24         skip_all='skipping reftable JGit tests; JGit does not support SHA256 reftables'
  25         test_done
  26 fi
  27
  28 test_commit_jgit () {
  29         touch "$1" &&
  30         jgit add "$1" &&
  31         jgit commit -m "$1"
  32 }
  33
  34 test_same_refs () {
  35         git show-ref --head >cgit.actual &&
  36         jgit show-ref >jgit-tabs.actual &&
  37         tr "\t" " " <jgit-tabs.actual >jgit.actual &&
  38         test_cmp cgit.actual jgit.actual
  39 }
  40
  41 test_same_ref () {
  42         git rev-parse "$1" >cgit.actual &&
  43         jgit rev-parse "$1" >jgit.actual &&
  44         test_cmp cgit.actual jgit.actual
  45 }
  46
  47 test_same_reflog () {
  48         git reflog "$*" >cgit.actual &&
  49         jgit reflog "$*" >jgit-newline.actual &&
  50         sed '/^$/d' <jgit-newline.actual >jgit.actual &&
  51         test_cmp cgit.actual jgit.actual
  52 }
  53
  54 test_expect_success 'CGit repository can be read by JGit' '
  55         test_when_finished "rm -rf repo" &&
  56         git init repo &&
  57         (
  58                 cd repo &&
  59                 test_commit A &&
  60                 test_same_refs &&
  61                 test_same_ref HEAD &&
  62                 test_same_reflog HEAD
  63         )
  64 '
  65
  66 test_expect_success 'JGit repository can be read by CGit' '
  67         test_when_finished "rm -rf repo" &&
  68         jgit init repo &&
  69         (
  70                 cd repo &&
  71
  72                 touch file &&
  73                 jgit add file &&
  74                 jgit commit -m "initial commit" &&
  75
  76                 # Note that we must convert the ref storage after we have
  77                 # written the default branch. Otherwise JGit will end up with
  78                 # no HEAD at all.
  79                 jgit convert-ref-storage --format=reftable &&
  80
  81                 test_same_refs &&
  82                 test_same_ref HEAD &&
  83                 # Interestingly, JGit cannot read its own reflog here. CGit can
  84                 # though.
  85                 printf "%s HEAD@{0}: commit (initial): initial commit" "$(git rev-parse --short HEAD)" >expect &&
  86                 git reflog HEAD >actual &&
  87                 test_cmp expect actual
  88         )
  89 '
  90
  91 test_expect_success 'mixed writes from JGit and CGit' '
  92         test_when_finished "rm -rf repo" &&
  93         git init repo &&
  94         (
  95                 cd repo &&
  96
  97                 test_commit A &&
  98                 test_commit_jgit B &&
  99                 test_commit C &&
 100                 test_commit_jgit D &&
 101
 102                 test_same_refs &&
 103                 test_same_ref HEAD &&
 104                 test_same_reflog HEAD
 105         )
 106 '
 107
 108 test_expect_success 'JGit can read multi-level index' '
 109         test_when_finished "rm -rf repo" &&
 110         git init repo &&
 111         (
 112                 cd repo &&
 113
 114                 test_commit A &&
 115                 awk "
 116                     BEGIN {
 117                         print \"start\";
 118                         for (i = 0; i < 10000; i++)
 119                             printf \"create refs/heads/branch-%d HEAD\n\", i;
 120                         print \"commit\";
 121                     }
 122                 " >input &&
 123                 git update-ref --stdin <input &&
 124
 125                 test_same_refs &&
 126                 test_same_ref refs/heads/branch-1 &&
 127                 test_same_ref refs/heads/branch-5738 &&
 128                 test_same_ref refs/heads/branch-9999
 129         )
 130 '
 131
 132 test_done