t/t7703-repack-geometric.sh

   1 #!/bin/sh
   2
   3 test_description='git repack --geometric works correctly'
   4
   5 . ./test-lib.sh
   6
   7 GIT_TEST_MULTI_PACK_INDEX=0
   8
   9 objdir=.git/objects
  10 midx=$objdir/pack/multi-pack-index
  11
  12 test_expect_success '--geometric with no packs' '
  13         git init geometric &&
  14         test_when_finished "rm -fr geometric" &&
  15         (
  16                 cd geometric &&
  17
  18                 git repack --write-midx --geometric 2 >out &&
  19                 test_i18ngrep "Nothing new to pack" out
  20         )
  21 '
  22
  23 test_expect_success '--geometric with one pack' '
  24         git init geometric &&
  25         test_when_finished "rm -fr geometric" &&
  26         (
  27                 cd geometric &&
  28
  29                 test_commit "base" &&
  30                 git repack -d &&
  31
  32                 git repack --geometric 2 >out &&
  33
  34                 test_i18ngrep "Nothing new to pack" out
  35         )
  36 '
  37
  38 test_expect_success '--geometric with an intact progression' '
  39         git init geometric &&
  40         test_when_finished "rm -fr geometric" &&
  41         (
  42                 cd geometric &&
  43
  44                 # These packs already form a geometric progression.
  45                 test_commit_bulk --start=1 1 && # 3 objects
  46                 test_commit_bulk --start=2 2 && # 6 objects
  47                 test_commit_bulk --start=4 4 && # 12 objects
  48
  49                 find $objdir/pack -name "*.pack" | sort >expect &&
  50                 git repack --geometric 2 -d &&
  51                 find $objdir/pack -name "*.pack" | sort >actual &&
  52
  53                 test_cmp expect actual
  54         )
  55 '
  56
  57 test_expect_success '--geometric with loose objects' '
  58         git init geometric &&
  59         test_when_finished "rm -fr geometric" &&
  60         (
  61                 cd geometric &&
  62
  63                 # These packs already form a geometric progression.
  64                 test_commit_bulk --start=1 1 && # 3 objects
  65                 test_commit_bulk --start=2 2 && # 6 objects
  66                 # The loose objects are packed together, breaking the
  67                 # progression.
  68                 test_commit loose && # 3 objects
  69
  70                 find $objdir/pack -name "*.pack" | sort >before &&
  71                 git repack --geometric 2 -d &&
  72                 find $objdir/pack -name "*.pack" | sort >after &&
  73
  74                 comm -13 before after >new &&
  75                 comm -23 before after >removed &&
  76
  77                 test_line_count = 1 new &&
  78                 test_must_be_empty removed &&
  79
  80                 git repack --geometric 2 -d &&
  81                 find $objdir/pack -name "*.pack" | sort >after &&
  82
  83                 # The progression (3, 3, 6) is combined into one new pack.
  84                 test_line_count = 1 after
  85         )
  86 '
  87
  88 test_expect_success '--geometric with small-pack rollup' '
  89         git init geometric &&
  90         test_when_finished "rm -fr geometric" &&
  91         (
  92                 cd geometric &&
  93
  94                 test_commit_bulk --start=1 1 && # 3 objects
  95                 test_commit_bulk --start=2 1 && # 3 objects
  96                 find $objdir/pack -name "*.pack" | sort >small &&
  97                 test_commit_bulk --start=3 4 && # 12 objects
  98                 test_commit_bulk --start=7 8 && # 24 objects
  99                 find $objdir/pack -name "*.pack" | sort >before &&
 100
 101                 git repack --geometric 2 -d &&
 102
 103                 # Three packs in total; two of the existing large ones, and one
 104                 # new one.
 105                 find $objdir/pack -name "*.pack" | sort >after &&
 106                 test_line_count = 3 after &&
 107                 comm -3 small before | tr -d "\t" >large &&
 108                 grep -qFf large after
 109         )
 110 '
 111
 112 test_expect_success '--geometric with small- and large-pack rollup' '
 113         git init geometric &&
 114         test_when_finished "rm -fr geometric" &&
 115         (
 116                 cd geometric &&
 117
 118                 # size(small1) + size(small2) > size(medium) / 2
 119                 test_commit_bulk --start=1 1 && # 3 objects
 120                 test_commit_bulk --start=2 1 && # 3 objects
 121                 test_commit_bulk --start=2 3 && # 7 objects
 122                 test_commit_bulk --start=6 9 && # 27 objects &&
 123
 124                 find $objdir/pack -name "*.pack" | sort >before &&
 125
 126                 git repack --geometric 2 -d &&
 127
 128                 find $objdir/pack -name "*.pack" | sort >after &&
 129                 comm -12 before after >untouched &&
 130
 131                 # Two packs in total; the largest pack from before running "git
 132                 # repack", and one new one.
 133                 test_line_count = 1 untouched &&
 134                 test_line_count = 2 after
 135         )
 136 '
 137
 138 test_expect_success '--geometric ignores kept packs' '
 139         git init geometric &&
 140         test_when_finished "rm -fr geometric" &&
 141         (
 142                 cd geometric &&
 143
 144                 test_commit kept && # 3 objects
 145                 test_commit pack && # 3 objects
 146
 147                 KEPT=$(git pack-objects --revs $objdir/pack/pack <<-EOF
 148                 refs/tags/kept
 149                 EOF
 150                 ) &&
 151                 PACK=$(git pack-objects --revs $objdir/pack/pack <<-EOF
 152                 refs/tags/pack
 153                 ^refs/tags/kept
 154                 EOF
 155                 ) &&
 156
 157                 # neither pack contains more than twice the number of objects in
 158                 # the other, so they should be combined. but, marking one as
 159                 # .kept on disk will "freeze" it, so the pack structure should
 160                 # remain unchanged.
 161                 touch $objdir/pack/pack-$KEPT.keep &&
 162
 163                 find $objdir/pack -name "*.pack" | sort >before &&
 164                 git repack --geometric 2 -d &&
 165                 find $objdir/pack -name "*.pack" | sort >after &&
 166
 167                 # both packs should still exist
 168                 test_path_is_file $objdir/pack/pack-$KEPT.pack &&
 169                 test_path_is_file $objdir/pack/pack-$PACK.pack &&
 170
 171                 # and no new packs should be created
 172                 test_cmp before after &&
 173
 174                 # Passing --pack-kept-objects causes packs with a .keep file to
 175                 # be repacked, too.
 176                 git repack --geometric 2 -d --pack-kept-objects &&
 177
 178                 find $objdir/pack -name "*.pack" >after &&
 179                 test_line_count = 1 after
 180         )
 181 '
 182
 183 test_expect_success '--geometric chooses largest MIDX preferred pack' '
 184         git init geometric &&
 185         test_when_finished "rm -fr geometric" &&
 186         (
 187                 cd geometric &&
 188
 189                 # These packs already form a geometric progression.
 190                 test_commit_bulk --start=1 1 && # 3 objects
 191                 test_commit_bulk --start=2 2 && # 6 objects
 192                 ls $objdir/pack/pack-*.idx >before &&
 193                 test_commit_bulk --start=4 4 && # 12 objects
 194                 ls $objdir/pack/pack-*.idx >after &&
 195
 196                 git repack --geometric 2 -dbm &&
 197
 198                 comm -3 before after | xargs -n 1 basename >expect &&
 199                 test-tool read-midx --preferred-pack $objdir >actual &&
 200
 201                 test_cmp expect actual
 202         )
 203 '
 204
 205 test_done