t/t1409-avoid-packing-refs.sh

   1 #!/bin/sh
   2
   3 test_description='avoid rewriting packed-refs unnecessarily'
   4
   5 . ./test-lib.sh
   6
   7 # Add an identifying mark to the packed-refs file header line. This
   8 # shouldn't upset readers, and it should be omitted if the file is
   9 # ever rewritten.
  10 mark_packed_refs () {
  11         sed -e "s/^\(#.*\)/\1 t1409 /" .git/packed-refs >.git/packed-refs.new &&
  12         mv .git/packed-refs.new .git/packed-refs
  13 }
  14
  15 # Verify that the packed-refs file is still marked.
  16 check_packed_refs_marked () {
  17         grep -q '^#.* t1409 ' .git/packed-refs
  18 }
  19
  20 test_expect_success 'setup' '
  21         git commit --allow-empty -m "Commit A" &&
  22         A=$(git rev-parse HEAD) &&
  23         git commit --allow-empty -m "Commit B" &&
  24         B=$(git rev-parse HEAD) &&
  25         git commit --allow-empty -m "Commit C" &&
  26         C=$(git rev-parse HEAD)
  27 '
  28
  29 test_expect_success 'do not create packed-refs file gratuitously' '
  30         test_path_is_missing .git/packed-refs &&
  31         git update-ref refs/heads/foo $A &&
  32         test_path_is_missing .git/packed-refs &&
  33         git update-ref refs/heads/foo $B &&
  34         test_path_is_missing .git/packed-refs &&
  35         git update-ref refs/heads/foo $C $B &&
  36         test_path_is_missing .git/packed-refs &&
  37         git update-ref -d refs/heads/foo &&
  38         test_path_is_missing .git/packed-refs
  39 '
  40
  41 test_expect_success 'check that marking the packed-refs file works' '
  42         git for-each-ref >expected &&
  43         git pack-refs --all &&
  44         mark_packed_refs &&
  45         check_packed_refs_marked &&
  46         git for-each-ref >actual &&
  47         test_cmp expected actual &&
  48         git pack-refs --all &&
  49         ! check_packed_refs_marked &&
  50         git for-each-ref >actual2 &&
  51         test_cmp expected actual2
  52 '
  53
  54 test_expect_success 'leave packed-refs untouched on update of packed' '
  55         git update-ref refs/heads/packed-update $A &&
  56         git pack-refs --all &&
  57         mark_packed_refs &&
  58         git update-ref refs/heads/packed-update $B &&
  59         check_packed_refs_marked
  60 '
  61
  62 test_expect_success 'leave packed-refs untouched on checked update of packed' '
  63         git update-ref refs/heads/packed-checked-update $A &&
  64         git pack-refs --all &&
  65         mark_packed_refs &&
  66         git update-ref refs/heads/packed-checked-update $B $A &&
  67         check_packed_refs_marked
  68 '
  69
  70 test_expect_success 'leave packed-refs untouched on verify of packed' '
  71         git update-ref refs/heads/packed-verify $A &&
  72         git pack-refs --all &&
  73         mark_packed_refs &&
  74         echo "verify refs/heads/packed-verify $A" | git update-ref --stdin &&
  75         check_packed_refs_marked
  76 '
  77
  78 test_expect_success 'touch packed-refs on delete of packed' '
  79         git update-ref refs/heads/packed-delete $A &&
  80         git pack-refs --all &&
  81         mark_packed_refs &&
  82         git update-ref -d refs/heads/packed-delete &&
  83         ! check_packed_refs_marked
  84 '
  85
  86 test_expect_success 'leave packed-refs untouched on update of loose' '
  87         git pack-refs --all &&
  88         git update-ref refs/heads/loose-update $A &&
  89         mark_packed_refs &&
  90         git update-ref refs/heads/loose-update $B &&
  91         check_packed_refs_marked
  92 '
  93
  94 test_expect_success 'leave packed-refs untouched on checked update of loose' '
  95         git pack-refs --all &&
  96         git update-ref refs/heads/loose-checked-update $A &&
  97         mark_packed_refs &&
  98         git update-ref refs/heads/loose-checked-update $B $A &&
  99         check_packed_refs_marked
 100 '
 101
 102 test_expect_success 'leave packed-refs untouched on verify of loose' '
 103         git pack-refs --all &&
 104         git update-ref refs/heads/loose-verify $A &&
 105         mark_packed_refs &&
 106         echo "verify refs/heads/loose-verify $A" | git update-ref --stdin &&
 107         check_packed_refs_marked
 108 '
 109
 110 test_expect_success 'leave packed-refs untouched on delete of loose' '
 111         git pack-refs --all &&
 112         git update-ref refs/heads/loose-delete $A &&
 113         mark_packed_refs &&
 114         git update-ref -d refs/heads/loose-delete &&
 115         check_packed_refs_marked
 116 '
 117
 118 test_done