t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4 . ./test-lib.sh
   5
   6 objdir=.git/objects
   7
   8 midx_read_expect () {
   9         NUM_PACKS=$1
  10         NUM_OBJECTS=$2
  11         NUM_CHUNKS=$3
  12         OBJECT_DIR=$4
  13         EXTRA_CHUNKS="$5"
  14         {
  15                 cat <<-EOF &&
  16                 header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
  17                 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
  18                 num_objects: $NUM_OBJECTS
  19                 packs:
  20                 EOF
  21                 if test $NUM_PACKS -ge 1
  22                 then
  23                         ls $OBJECT_DIR/pack/ | grep idx | sort
  24                 fi &&
  25                 printf "object-dir: $OBJECT_DIR\n"
  26         } >expect &&
  27         test-tool read-midx $OBJECT_DIR >actual &&
  28         test_cmp expect actual
  29 }
  30
  31 test_expect_success 'write midx with no packs' '
  32         test_when_finished rm -f pack/multi-pack-index &&
  33         git multi-pack-index --object-dir=. write &&
  34         midx_read_expect 0 0 4 .
  35 '
  36
  37 generate_objects () {
  38         i=$1
  39         iii=$(printf '%03i' $i)
  40         {
  41                 test-tool genrandom "bar" 200 &&
  42                 test-tool genrandom "baz $iii" 50
  43         } >wide_delta_$iii &&
  44         {
  45                 test-tool genrandom "foo"$i 100 &&
  46                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  47                 test-tool genrandom "foo"$(( $i + 2 )) 100
  48         } >deep_delta_$iii &&
  49         {
  50                 echo $iii &&
  51                 test-tool genrandom "$iii" 8192
  52         } >file_$iii &&
  53         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  54 }
  55
  56 commit_and_list_objects () {
  57         {
  58                 echo 101 &&
  59                 test-tool genrandom 100 8192;
  60         } >file_101 &&
  61         git update-index --add file_101 &&
  62         tree=$(git write-tree) &&
  63         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  64         {
  65                 echo $tree &&
  66                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  67         } >obj-list &&
  68         git reset --hard $commit
  69 }
  70
  71 test_expect_success 'create objects' '
  72         test_commit initial &&
  73         for i in $(test_seq 1 5)
  74         do
  75                 generate_objects $i
  76         done &&
  77         commit_and_list_objects
  78 '
  79
  80 test_expect_success 'write midx with one v1 pack' '
  81         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
  82         test_when_finished rm $objdir/pack/test-$pack.pack \
  83                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
  84         git multi-pack-index --object-dir=$objdir write &&
  85         midx_read_expect 1 18 4 $objdir
  86 '
  87
  88 midx_git_two_modes () {
  89         git -c core.multiPackIndex=false $1 >expect &&
  90         git -c core.multiPackIndex=true $1 >actual &&
  91         test_cmp expect actual
  92 }
  93
  94 compare_results_with_midx () {
  95         MSG=$1
  96         test_expect_success "check normal git operations: $MSG" '
  97                 midx_git_two_modes "rev-list --objects --all" &&
  98                 midx_git_two_modes "log --raw"
  99         '
 100 }
 101
 102 test_expect_success 'write midx with one v2 pack' '
 103         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 104         git multi-pack-index --object-dir=$objdir write &&
 105         midx_read_expect 1 18 4 $objdir
 106 '
 107
 108 compare_results_with_midx "one v2 pack"
 109
 110 test_expect_success 'add more objects' '
 111         for i in $(test_seq 6 10)
 112         do
 113                 generate_objects $i
 114         done &&
 115         commit_and_list_objects
 116 '
 117
 118 test_expect_success 'write midx with two packs' '
 119         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 120         git multi-pack-index --object-dir=$objdir write &&
 121         midx_read_expect 2 34 4 $objdir
 122 '
 123
 124 compare_results_with_midx "two packs"
 125
 126 test_expect_success 'add more packs' '
 127         for j in $(test_seq 11 20)
 128         do
 129                 generate_objects $j &&
 130                 commit_and_list_objects &&
 131                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
 132         done
 133 '
 134
 135 compare_results_with_midx "mixed mode (two packs + extra)"
 136
 137 test_expect_success 'write midx with twelve packs' '
 138         git multi-pack-index --object-dir=$objdir write &&
 139         midx_read_expect 12 74 4 $objdir
 140 '
 141
 142 compare_results_with_midx "twelve packs"
 143
 144 test_expect_success 'repack removes multi-pack-index' '
 145         test_path_is_file $objdir/pack/multi-pack-index &&
 146         git repack -adf &&
 147         test_path_is_missing $objdir/pack/multi-pack-index
 148 '
 149
 150 compare_results_with_midx "after repack"
 151
 152
 153 # usage: corrupt_data <file> <pos> [<data>]
 154 corrupt_data () {
 155         file=$1
 156         pos=$2
 157         data="${3:-\0}"
 158         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 159 }
 160
 161 # Force 64-bit offsets by manipulating the idx file.
 162 # This makes the IDX file _incorrect_ so be careful to clean up after!
 163 test_expect_success 'force some 64-bit offsets with pack-objects' '
 164         mkdir objects64 &&
 165         mkdir objects64/pack &&
 166         for i in $(test_seq 1 11)
 167         do
 168                 generate_objects 11
 169         done &&
 170         commit_and_list_objects &&
 171         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 172         idx64=objects64/pack/test-64-$pack64.idx &&
 173         chmod u+w $idx64 &&
 174         corrupt_data $idx64 2999 "\02" &&
 175         midx64=$(git multi-pack-index --object-dir=objects64 write) &&
 176         midx_read_expect 1 63 5 objects64 " large-offsets"
 177 '
 178
 179 test_done