| #!/bin/sh |
| |
| test_description='basic git gc tests |
| ' |
| |
| . ./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 && |
| |
| # These are simply values which, when hashed as a blob with a newline, |
| # produce a hash where the first byte is 0x17 in their respective |
| # algorithms. |
| test_oid_cache <<-EOF |
| obj1 sha1:263 |
| obj1 sha256:34 |
| |
| obj2 sha1:410 |
| obj2 sha256:174 |
| |
| obj3 sha1:523 |
| obj3 sha256:313 |
| |
| obj4 sha1:790 |
| obj4 sha256:481 |
| EOF |
| ' |
| |
| test_expect_success 'gc empty repository' ' |
| git gc |
| ' |
| |
| test_expect_success 'gc does not leave behind pid file' ' |
| git gc && |
| test_path_is_missing .git/gc.pid |
| ' |
| |
| test_expect_success 'gc --gobbledegook' ' |
| test_expect_code 129 git gc --nonsense 2>err && |
| test_i18ngrep "[Uu]sage: git gc" err |
| ' |
| |
| test_expect_success 'gc -h with invalid configuration' ' |
| mkdir broken && |
| ( |
| cd broken && |
| git init && |
| echo "[gc] pruneexpire = CORRUPT" >>.git/config && |
| test_expect_code 129 git gc -h >usage 2>&1 |
| ) && |
| test_i18ngrep "[Uu]sage" broken/usage |
| ' |
| |
| test_expect_success 'gc is not aborted due to a stale symref' ' |
| git init remote && |
| ( |
| cd remote && |
| test_commit initial && |
| git clone . ../client && |
| git branch -m develop && |
| cd ../client && |
| git fetch --prune && |
| 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 && |
| cp pack-list base-pack-list && |
| 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 .git/objects/pack/$(cat base-pack-list) && |
| git fsck |
| ) |
| ' |
| |
| test_expect_success 'pre-auto-gc hook can stop auto gc' ' |
| cat >err.expect <<-\EOF && |
| no gc for you |
| EOF |
| |
| git init pre-auto-gc-hook && |
| test_hook -C pre-auto-gc-hook pre-auto-gc <<-\EOF && |
| echo >&2 no gc for you && |
| exit 1 |
| EOF |
| ( |
| cd pre-auto-gc-hook && |
| |
| git config gc.auto 3 && |
| git config gc.autoDetach false && |
| |
| # 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 "$(test_oid obj1)" && |
| test_commit "$(test_oid obj2)" && |
| |
| git gc --auto >../out.actual 2>../err.actual |
| ) && |
| test_must_be_empty out.actual && |
| test_cmp err.expect err.actual && |
| |
| cat >err.expect <<-\EOF && |
| will gc for you |
| Auto packing the repository for optimum performance. |
| See "git help gc" for manual housekeeping. |
| EOF |
| |
| test_hook -C pre-auto-gc-hook --clobber pre-auto-gc <<-\EOF && |
| echo >&2 will gc for you && |
| exit 0 |
| EOF |
| |
| git -C pre-auto-gc-hook gc --auto >out.actual 2>err.actual && |
| |
| test_must_be_empty out.actual && |
| test_cmp err.expect err.actual |
| ' |
| |
| 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 "$(test_oid obj1)" && |
| test_commit "$(test_oid obj2)" && |
| # Our first gc will create a pack; our second will create a second pack |
| git gc --auto && |
| ls .git/objects/pack/pack-*.pack | sort >existing_packs && |
| test_commit "$(test_oid obj3)" && |
| test_commit "$(test_oid obj4)" && |
| |
| git gc --auto 2>err && |
| test_i18ngrep ! "^warning:" err && |
| ls .git/objects/pack/pack-*.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 = 1 new # There is one new pack |
| ' |
| |
| test_expect_success 'gc --no-quiet' ' |
| GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr && |
| test_must_be_empty stdout && |
| test_i18ngrep "Computing commit graph generation numbers" stderr |
| ' |
| |
| test_expect_success TTY 'with TTY: gc --no-quiet' ' |
| test_terminal env GIT_PROGRESS_DELAY=0 \ |
| 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 |
| ' |
| |
| prepare_cruft_history () { |
| test_commit base && |
| |
| test_commit --no-tag foo && |
| test_commit --no-tag bar && |
| git reset HEAD^^ |
| } |
| |
| assert_cruft_packs () { |
| find .git/objects/pack -name "*.mtimes" >mtimes && |
| sed -e 's/\.mtimes$/\.pack/g' mtimes >packs && |
| |
| test_file_not_empty packs && |
| while read pack |
| do |
| test_path_is_file "$pack" || return 1 |
| done <packs |
| } |
| |
| assert_no_cruft_packs () { |
| find .git/objects/pack -name "*.mtimes" >mtimes && |
| test_must_be_empty mtimes |
| } |
| |
| test_expect_success 'gc --cruft generates a cruft pack' ' |
| test_when_finished "rm -fr crufts" && |
| git init crufts && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git gc --cruft && |
| assert_cruft_packs |
| ) |
| ' |
| |
| test_expect_success 'gc.cruftPacks=true generates a cruft pack' ' |
| test_when_finished "rm -fr crufts" && |
| git init crufts && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git -c gc.cruftPacks=true gc && |
| assert_cruft_packs |
| ) |
| ' |
| |
| test_expect_success 'feature.experimental=true generates a cruft pack' ' |
| git init crufts && |
| test_when_finished "rm -fr crufts" && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git -c feature.experimental=true gc && |
| assert_cruft_packs |
| ) |
| ' |
| |
| test_expect_success 'feature.experimental=false allows explicit cruft packs' ' |
| git init crufts && |
| test_when_finished "rm -fr crufts" && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git -c gc.cruftPacks=true -c feature.experimental=false gc && |
| assert_cruft_packs |
| ) |
| ' |
| |
| test_expect_success 'feature.experimental=true can be overridden' ' |
| git init crufts && |
| test_when_finished "rm -fr crufts" && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git -c feature.expiremental=true -c gc.cruftPacks=false gc && |
| assert_no_cruft_packs |
| ) |
| ' |
| |
| test_expect_success 'feature.experimental=false avoids cruft packs by default' ' |
| git init crufts && |
| test_when_finished "rm -fr crufts" && |
| ( |
| cd crufts && |
| |
| prepare_cruft_history && |
| git -c feature.experimental=false gc && |
| assert_no_cruft_packs |
| ) |
| ' |
| |
| 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=$(git gc --auto 9>&1) |
| } |
| |
| test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' ' |
| test_commit foo && |
| test_commit bar && |
| git repack && |
| test_config gc.autopacklimit 1 && |
| test_config gc.autodetach true && |
| echo fleem >.git/gc.log && |
| git gc --auto 2>err && |
| test_i18ngrep "^warning:" err && |
| test_config gc.logexpiry 5.days && |
| test-tool chmtime =-345600 .git/gc.log && |
| git gc --auto && |
| test_config gc.logexpiry 2.days && |
| run_and_wait_for_auto_gc && |
| ls .git/objects/pack/pack-*.pack >packs && |
| test_line_count = 1 packs |
| ' |
| |
| test_expect_success 'background auto gc respects lock for all operations' ' |
| # make sure we run a background auto-gc |
| test_commit make-pack && |
| git repack && |
| test_config gc.autopacklimit 1 && |
| test_config gc.autodetach true && |
| |
| # create a ref whose loose presence we can use to detect a pack-refs run |
| git update-ref refs/heads/should-be-loose HEAD && |
| (ls -1 .git/refs/heads .git/reftable >expect || true) && |
| |
| # now fake a concurrent gc that holds the lock; we can use our |
| # shell pid so that it looks valid. |
| hostname=$(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 && |
| (ls -1 .git/refs/heads .git/reftable >actual || true) && |
| test_cmp expect actual |
| ' |
| |
| # 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 |