t/t6500-gc.sh

   1 #!/bin/sh
   2
   3 test_description='basic git gc tests
   4 '
   5
   6 . ./test-lib.sh
   7 . "$TEST_DIRECTORY"/lib-terminal.sh
   8
   9 test_expect_success 'setup' '
  10         # do not let the amount of physical memory affects gc
  11         # behavior, make sure we always pack everything to one pack by
  12         # default
  13         git config gc.bigPackThreshold 2g
  14 '
  15
  16 test_expect_success 'gc empty repository' '
  17         git gc
  18 '
  19
  20 test_expect_success 'gc does not leave behind pid file' '
  21         git gc &&
  22         test_path_is_missing .git/gc.pid
  23 '
  24
  25 test_expect_success 'gc --gobbledegook' '
  26         test_expect_code 129 git gc --nonsense 2>err &&
  27         test_i18ngrep "[Uu]sage: git gc" err
  28 '
  29
  30 test_expect_success 'gc -h with invalid configuration' '
  31         mkdir broken &&
  32         (
  33                 cd broken &&
  34                 git init &&
  35                 echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
  36                 test_expect_code 129 git gc -h >usage 2>&1
  37         ) &&
  38         test_i18ngrep "[Uu]sage" broken/usage
  39 '
  40
  41 test_expect_success 'gc is not aborted due to a stale symref' '
  42         git init remote &&
  43         (
  44                 cd remote &&
  45                 test_commit initial &&
  46                 git clone . ../client &&
  47                 git branch -m develop &&
  48                 cd ../client &&
  49                 git fetch --prune &&
  50                 git gc
  51         )
  52 '
  53
  54 test_expect_success 'gc --keep-largest-pack' '
  55         test_create_repo keep-pack &&
  56         (
  57                 cd keep-pack &&
  58                 test_commit one &&
  59                 test_commit two &&
  60                 test_commit three &&
  61                 git gc &&
  62                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  63                 test_line_count = 1 pack-list &&
  64                 BASE_PACK=.git/objects/pack/pack-*.pack &&
  65                 test_commit four &&
  66                 git repack -d &&
  67                 test_commit five &&
  68                 git repack -d &&
  69                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  70                 test_line_count = 3 pack-list &&
  71                 git gc --keep-largest-pack &&
  72                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  73                 test_line_count = 2 pack-list &&
  74                 awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
  75                 test_line_count = 2 pack-info &&
  76                 test_path_is_file $BASE_PACK &&
  77                 git fsck
  78         )
  79 '
  80
  81 test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
  82         test_config gc.auto 3 &&
  83         test_config gc.autodetach false &&
  84         test_config pack.writebitmaps true &&
  85         # We need to create two object whose sha1s start with 17
  86         # since this is what git gc counts.  As it happens, these
  87         # two blobs will do so.
  88         test_commit 263 &&
  89         test_commit 410 &&
  90         # Our first gc will create a pack; our second will create a second pack
  91         git gc --auto &&
  92         ls .git/objects/pack | sort >existing_packs &&
  93         test_commit 523 &&
  94         test_commit 790 &&
  95
  96         git gc --auto 2>err &&
  97         test_i18ngrep ! "^warning:" err &&
  98         ls .git/objects/pack/ | sort >post_packs &&
  99         comm -1 -3 existing_packs post_packs >new &&
 100         comm -2 -3 existing_packs post_packs >del &&
 101         test_line_count = 0 del && # No packs are deleted
 102         test_line_count = 2 new # There is one new pack and its .idx
 103 '
 104
 105 test_expect_success 'gc --no-quiet' '
 106         GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
 107         test_must_be_empty stdout &&
 108         test_i18ngrep "Computing commit graph generation numbers" stderr
 109 '
 110
 111 test_expect_success TTY 'with TTY: gc --no-quiet' '
 112         test_terminal env GIT_PROGRESS_DELAY=0 \
 113                 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
 114         test_must_be_empty stdout &&
 115         test_i18ngrep "Enumerating objects" stderr &&
 116         test_i18ngrep "Computing commit graph generation numbers" stderr
 117 '
 118
 119 test_expect_success 'gc --quiet' '
 120         git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
 121         test_must_be_empty stdout &&
 122         test_must_be_empty stderr
 123 '
 124
 125 test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
 126         test_config gc.reflogExpire never &&
 127         test_config gc.reflogExpireUnreachable never &&
 128
 129         GIT_TRACE=$(pwd)/trace.out git gc &&
 130
 131         # Check that git-pack-refs is run as a sanity check (done via
 132         # gc_before_repack()) but that git-expire is not.
 133         grep -E "^trace: (built-in|exec|run_command): git pack-refs --" trace.out &&
 134         ! grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
 135 '
 136
 137 test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
 138         >trace.out &&
 139         test_config gc.reflogExpire never &&
 140         GIT_TRACE=$(pwd)/trace.out git gc &&
 141         grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
 142 '
 143
 144 run_and_wait_for_auto_gc () {
 145         # We read stdout from gc for the side effect of waiting until the
 146         # background gc process exits, closing its fd 9.  Furthermore, the
 147         # variable assignment from a command substitution preserves the
 148         # exit status of the main gc process.
 149         # Note: this fd trickery doesn't work on Windows, but there is no
 150         # need to, because on Win the auto gc always runs in the foreground.
 151         doesnt_matter=$(git gc --auto 9>&1)
 152 }
 153
 154 test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
 155         test_commit foo &&
 156         test_commit bar &&
 157         git repack &&
 158         test_config gc.autopacklimit 1 &&
 159         test_config gc.autodetach true &&
 160         echo fleem >.git/gc.log &&
 161         git gc --auto 2>err &&
 162         test_i18ngrep "^warning:" err &&
 163         test_config gc.logexpiry 5.days &&
 164         test-tool chmtime =-345600 .git/gc.log &&
 165         git gc --auto &&
 166         test_config gc.logexpiry 2.days &&
 167         run_and_wait_for_auto_gc &&
 168         ls .git/objects/pack/pack-*.pack >packs &&
 169         test_line_count = 1 packs
 170 '
 171
 172 test_expect_success 'background auto gc respects lock for all operations' '
 173         # make sure we run a background auto-gc
 174         test_commit make-pack &&
 175         git repack &&
 176         test_config gc.autopacklimit 1 &&
 177         test_config gc.autodetach true &&
 178
 179         # create a ref whose loose presence we can use to detect a pack-refs run
 180         git update-ref refs/heads/should-be-loose HEAD &&
 181         test_path_is_file .git/refs/heads/should-be-loose &&
 182
 183         # now fake a concurrent gc that holds the lock; we can use our
 184         # shell pid so that it looks valid.
 185         hostname=$(hostname || echo unknown) &&
 186         shell_pid=$$ &&
 187         if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
 188         then
 189                 # In Git for Windows, Bash (actually, the MSYS2 runtime) has a
 190                 # different idea of PIDs than git.exe (actually Windows). Use
 191                 # the Windows PID in this case.
 192                 shell_pid=$(cat /proc/$shell_pid/winpid)
 193         fi &&
 194         printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
 195
 196         # our gc should exit zero without doing anything
 197         run_and_wait_for_auto_gc &&
 198         test_path_is_file .git/refs/heads/should-be-loose
 199 '
 200
 201 # DO NOT leave a detached auto gc process running near the end of the
 202 # test script: it can run long enough in the background to racily
 203 # interfere with the cleanup in 'test_done'.
 204
 205 test_done