diff options
Diffstat (limited to 't/t6500-gc.sh')
| -rwxr-xr-x | t/t6500-gc.sh | 240 |
1 files changed, 224 insertions, 16 deletions
diff --git a/t/t6500-gc.sh b/t/t6500-gc.sh index 818435f04e..d9acb63951 100755 --- a/t/t6500-gc.sh +++ b/t/t6500-gc.sh @@ -4,12 +4,30 @@ 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 + 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' ' @@ -60,7 +78,7 @@ test_expect_success 'gc --keep-largest-pack' ' git gc && ( cd .git/objects/pack && ls *.pack ) >pack-list && test_line_count = 1 pack-list && - BASE_PACK=.git/objects/pack/pack-*.pack && + cp pack-list base-pack-list && test_commit four && git repack -d && test_commit five && @@ -70,11 +88,57 @@ test_expect_success 'gc --keep-largest-pack' ' git gc --keep-largest-pack && ( cd .git/objects/pack && ls *.pack ) >pack-list && test_line_count = 2 pack-list && - test_path_is_file $BASE_PACK && + awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info && + test_line_count = 2 pack-info && + test_path_is_file .git/objects/pack/$(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 && @@ -82,21 +146,156 @@ test_expect_success 'auto gc with too many loose objects does not attempt to cre # 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 && + 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 | sort >existing_packs && - test_commit 523 && - test_commit 790 && + 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/ | sort >post_packs && + 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 = 2 new # There is one new pack and its .idx + 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 () { @@ -116,11 +315,11 @@ test_expect_success 'background auto gc does not run if gc.log is present and re test_config gc.autopacklimit 1 && test_config gc.autodetach true && echo fleem >.git/gc.log && - test_must_fail git gc --auto 2>err && - test_i18ngrep "^error:" err && + git gc --auto 2>err && + test_i18ngrep "^warning:" err && test_config gc.logexpiry 5.days && test-tool chmtime =-345600 .git/gc.log && - test_must_fail git gc --auto && + git gc --auto && test_config gc.logexpiry 2.days && run_and_wait_for_auto_gc && ls .git/objects/pack/pack-*.pack >packs && @@ -136,16 +335,25 @@ test_expect_success 'background auto gc respects lock for all operations' ' # 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 && + (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) && - printf "$$ %s" "$hostname" >.git/gc.pid && + shell_pid=$$ && + 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 + (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 |