'
. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-terminal.sh
+
+test_expect_success 'setup' '
+ # do not let the amount of physical memory affects gc
+ # behavior, make sure we always pack everything to one pack by
+ # default
+ git config gc.bigPackThreshold 2g
+'
test_expect_success 'gc empty repository' '
git gc
)
'
+test_expect_success 'gc --keep-largest-pack' '
+ test_create_repo keep-pack &&
+ (
+ cd keep-pack &&
+ test_commit one &&
+ test_commit two &&
+ test_commit three &&
+ git gc &&
+ ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+ test_line_count = 1 pack-list &&
+ BASE_PACK=.git/objects/pack/pack-*.pack &&
+ test_commit four &&
+ git repack -d &&
+ test_commit five &&
+ git repack -d &&
+ ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+ test_line_count = 3 pack-list &&
+ git gc --keep-largest-pack &&
+ ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+ test_line_count = 2 pack-list &&
+ awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
+ test_line_count = 2 pack-info &&
+ test_path_is_file $BASE_PACK &&
+ git fsck
+ )
+'
+
+test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
+ test_config gc.auto 3 &&
+ test_config gc.autodetach false &&
+ test_config pack.writebitmaps true &&
+ # We need to create two object whose sha1s start with 17
+ # since this is what git gc counts. As it happens, these
+ # two blobs will do so.
+ test_commit 263 &&
+ test_commit 410 &&
+ # Our first gc will create a pack; our second will create a second pack
+ git gc --auto &&
+ ls .git/objects/pack | sort >existing_packs &&
+ test_commit 523 &&
+ test_commit 790 &&
+
+ git gc --auto 2>err &&
+ test_i18ngrep ! "^warning:" err &&
+ ls .git/objects/pack/ | sort >post_packs &&
+ comm -1 -3 existing_packs post_packs >new &&
+ comm -2 -3 existing_packs post_packs >del &&
+ test_line_count = 0 del && # No packs are deleted
+ test_line_count = 2 new # There is one new pack and its .idx
+'
+
+test_expect_success 'gc --no-quiet' '
+ git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
+ test_must_be_empty stdout &&
+ test_line_count = 1 stderr &&
+ test_i18ngrep "Computing commit graph generation numbers" stderr
+'
+
+test_expect_success TTY 'with TTY: gc --no-quiet' '
+ test_terminal git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
+ test_must_be_empty stdout &&
+ test_i18ngrep "Enumerating objects" stderr &&
+ test_i18ngrep "Computing commit graph generation numbers" stderr
+'
+
+test_expect_success 'gc --quiet' '
+ git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
+ test_must_be_empty stdout &&
+ test_must_be_empty stderr
+'
+
+test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
+ test_config gc.reflogExpire never &&
+ test_config gc.reflogExpireUnreachable never &&
+
+ GIT_TRACE=$(pwd)/trace.out git gc &&
+
+ # Check that git-pack-refs is run as a sanity check (done via
+ # gc_before_repack()) but that git-expire is not.
+ grep -E "^trace: (built-in|exec|run_command): git pack-refs --" trace.out &&
+ ! grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
+'
+
+test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
+ >trace.out &&
+ test_config gc.reflogExpire never &&
+ GIT_TRACE=$(pwd)/trace.out git gc &&
+ grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
+'
+
+run_and_wait_for_auto_gc () {
+ # We read stdout from gc for the side effect of waiting until the
+ # background gc process exits, closing its fd 9. Furthermore, the
+ # variable assignment from a command substitution preserves the
+ # exit status of the main gc process.
+ # Note: this fd trickery doesn't work on Windows, but there is no
+ # need to, because on Win the auto gc always runs in the foreground.
+ doesnt_matter=$(git gc --auto 9>&1)
+}
+
+test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
+ test_commit foo &&
+ test_commit bar &&
+ git repack &&
+ test_config gc.autopacklimit 1 &&
+ test_config gc.autodetach true &&
+ echo fleem >.git/gc.log &&
+ git gc --auto 2>err &&
+ test_i18ngrep "^warning:" err &&
+ test_config gc.logexpiry 5.days &&
+ test-tool chmtime =-345600 .git/gc.log &&
+ git gc --auto &&
+ test_config gc.logexpiry 2.days &&
+ run_and_wait_for_auto_gc &&
+ ls .git/objects/pack/pack-*.pack >packs &&
+ test_line_count = 1 packs
+'
+
+test_expect_success 'background auto gc respects lock for all operations' '
+ # make sure we run a background auto-gc
+ test_commit make-pack &&
+ git repack &&
+ test_config gc.autopacklimit 1 &&
+ test_config gc.autodetach true &&
+
+ # create a ref whose loose presence we can use to detect a pack-refs run
+ git update-ref refs/heads/should-be-loose HEAD &&
+ test_path_is_file .git/refs/heads/should-be-loose &&
+
+ # now fake a concurrent gc that holds the lock; we can use our
+ # shell pid so that it looks valid.
+ hostname=$(hostname || echo unknown) &&
+ shell_pid=$$ &&
+ if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
+ then
+ # In Git for Windows, Bash (actually, the MSYS2 runtime) has a
+ # different idea of PIDs than git.exe (actually Windows). Use
+ # the Windows PID in this case.
+ shell_pid=$(cat /proc/$shell_pid/winpid)
+ fi &&
+ printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
+
+ # our gc should exit zero without doing anything
+ run_and_wait_for_auto_gc &&
+ test_path_is_file .git/refs/heads/should-be-loose
+'
+
+# DO NOT leave a detached auto gc process running near the end of the
+# test script: it can run long enough in the background to racily
+# interfere with the cleanup in 'test_done'.
+
test_done