t/t3210-pack-refs.sh - git - Git at Google

 #!/bin/sh
 #
 # Copyright (c) 2005 Amos Waterland
 # Copyright (c) 2006 Christian Couder
 #

 test_description='git pack-refs should not change the branch semantic

 This test runs git pack-refs and git show-ref and checks that the branch
 semantic is still the same.
 '
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

 . ./test-lib.sh

 test_expect_success 'enable reflogs' '
 	git config core.logallrefupdates true
 '

 test_expect_success \
     'prepare a trivial repository' \
     'echo Hello > A &&
      git update-index --add A &&
      git commit -m "Initial commit." &&
      HEAD=$(git rev-parse --verify HEAD)'

 SHA1=

 test_expect_success \
     'see if git show-ref works as expected' \
     'git branch a &&
      SHA1=$(cat .git/refs/heads/a) &&
      echo "$SHA1 refs/heads/a" >expect &&
      git show-ref a >result &&
      test_cmp expect result'

 test_expect_success \
     'see if a branch still exists when packed' \
     'git branch b &&
      git pack-refs --all &&
      rm -f .git/refs/heads/b &&
      echo "$SHA1 refs/heads/b" >expect &&
      git show-ref b >result &&
      test_cmp expect result'

 test_expect_success 'git branch c/d should barf if branch c exists' '
      git branch c &&
      git pack-refs --all &&
      rm -f .git/refs/heads/c &&
      test_must_fail git branch c/d
 '

 test_expect_success \
     'see if a branch still exists after git pack-refs --prune' \
     'git branch e &&
      git pack-refs --all --prune &&
      echo "$SHA1 refs/heads/e" >expect &&
      git show-ref e >result &&
      test_cmp expect result'

 test_expect_success 'see if git pack-refs --prune remove ref files' '
      git branch f &&
      git pack-refs --all --prune &&
      ! test -f .git/refs/heads/f
 '

 test_expect_success 'see if git pack-refs --prune removes empty dirs' '
      git branch r/s/t &&
      git pack-refs --all --prune &&
      ! test -e .git/refs/heads/r
 '

 test_expect_success \
     'git branch g should work when git branch g/h has been deleted' \
     'git branch g/h &&
      git pack-refs --all --prune &&
      git branch -d g/h &&
      git branch g &&
      git pack-refs --all &&
      git branch -d g'

 test_expect_success 'git branch i/j/k should barf if branch i exists' '
      git branch i &&
      git pack-refs --all --prune &&
      test_must_fail git branch i/j/k
 '

 test_expect_success \
     'test git branch k after branch k/l/m and k/lm have been deleted' \
     'git branch k/l &&
      git branch k/lm &&
      git branch -d k/l &&
      git branch k/l/m &&
      git branch -d k/l/m &&
      git branch -d k/lm &&
      git branch k'

 test_expect_success \
     'test git branch n after some branch deletion and pruning' \
     'git branch n/o &&
      git branch n/op &&
      git branch -d n/o &&
      git branch n/o/p &&
      git branch -d n/op &&
      git pack-refs --all --prune &&
      git branch -d n/o/p &&
      git branch n'

 test_expect_success \
 	'see if up-to-date packed refs are preserved' \
 	'git branch q &&
 	 git pack-refs --all --prune &&
 	 git update-ref refs/heads/q refs/heads/q &&
 	 ! test -f .git/refs/heads/q'

 test_expect_success 'pack, prune and repack' '
 	git tag foo &&
 	git pack-refs --all --prune &&
 	git show-ref >all-of-them &&
 	git pack-refs &&
 	git show-ref >again &&
 	test_cmp all-of-them again
 '

 test_expect_success 'explicit pack-refs with dangling packed reference' '
 	git commit --allow-empty -m "soon to be garbage-collected" &&
 	git pack-refs --all &&
 	git reset --hard HEAD^ &&
 	git reflog expire --expire=all --all &&
 	git prune --expire=all &&
 	git pack-refs --all 2>result &&
 	test_must_be_empty result
 '

 test_expect_success 'delete ref with dangling packed version' '
 	git checkout -b lamb &&
 	git commit --allow-empty -m "future garbage" &&
 	git pack-refs --all &&
 	git reset --hard HEAD^ &&
 	git checkout main &&
 	git reflog expire --expire=all --all &&
 	git prune --expire=all &&
 	git branch -d lamb 2>result &&
 	test_must_be_empty result
 '

 test_expect_success 'delete ref while another dangling packed ref' '
 	git branch lamb &&
 	git commit --allow-empty -m "future garbage" &&
 	git pack-refs --all &&
 	git reset --hard HEAD^ &&
 	git reflog expire --expire=all --all &&
 	git prune --expire=all &&
 	git branch -d lamb 2>result &&
 	test_must_be_empty result
 '

 test_expect_success 'pack ref directly below refs/' '
 	git update-ref refs/top HEAD &&
 	git pack-refs --all --prune &&
 	grep refs/top .git/packed-refs &&
 	test_path_is_missing .git/refs/top
 '

 test_expect_success 'do not pack ref in refs/bisect' '
 	git update-ref refs/bisect/local HEAD &&
 	git pack-refs --all --prune &&
 	! grep refs/bisect/local .git/packed-refs >/dev/null &&
 	test_path_is_file .git/refs/bisect/local
 '

 test_expect_success 'disable reflogs' '
 	git config core.logallrefupdates false &&
 	rm -rf .git/logs
 '

 test_expect_success 'create packed foo/bar/baz branch' '
 	git branch foo/bar/baz &&
 	git pack-refs --all --prune &&
 	test_path_is_missing .git/refs/heads/foo/bar/baz &&
 	test_must_fail git reflog exists refs/heads/foo/bar/baz
 '

 test_expect_success 'notice d/f conflict with existing directory' '
 	test_must_fail git branch foo &&
 	test_must_fail git branch foo/bar
 '

 test_expect_success 'existing directory reports concrete ref' '
 	test_must_fail git branch foo 2>stderr &&
 	test_i18ngrep refs/heads/foo/bar/baz stderr
 '

 test_expect_success 'notice d/f conflict with existing ref' '
 	test_must_fail git branch foo/bar/baz/extra &&
 	test_must_fail git branch foo/bar/baz/lots/of/extra/components
 '

 test_expect_success 'reject packed-refs with unterminated line' '
 	cp .git/packed-refs .git/packed-refs.bak &&
 	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 	printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
 	echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
 	test_must_fail git for-each-ref >out 2>err &&
 	test_cmp expected_err err
 '

 test_expect_success 'reject packed-refs containing junk' '
 	cp .git/packed-refs .git/packed-refs.bak &&
 	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 	printf "%s\n" "bogus content" >>.git/packed-refs &&
 	echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
 	test_must_fail git for-each-ref >out 2>err &&
 	test_cmp expected_err err
 '

 test_expect_success 'reject packed-refs with a short SHA-1' '
 	cp .git/packed-refs .git/packed-refs.bak &&
 	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 	printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
 	printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
 	test_must_fail git for-each-ref >out 2>err &&
 	test_cmp expected_err err
 '

 test_expect_success 'timeout if packed-refs.lock exists' '
 	LOCK=.git/packed-refs.lock &&
 	>"$LOCK" &&
 	test_when_finished "rm -f $LOCK" &&
 	test_must_fail git pack-refs --all --prune
 '

 test_expect_success 'retry acquiring packed-refs.lock' '
 	LOCK=.git/packed-refs.lock &&
 	>"$LOCK" &&
 	test_when_finished "wait && rm -f $LOCK" &&
 	{
 		( sleep 1 && rm -f $LOCK ) &
 	} &&
 	git -c core.packedrefstimeout=3000 pack-refs --all --prune
 '

 test_expect_success SYMLINKS 'pack symlinked packed-refs' '
 	# First make sure that symlinking works when reading:
 	git update-ref refs/heads/lossy refs/heads/main &&
 	git for-each-ref >all-refs-before &&
 	mv .git/packed-refs .git/my-deviant-packed-refs &&
 	ln -s my-deviant-packed-refs .git/packed-refs &&
 	git for-each-ref >all-refs-linked &&
 	test_cmp all-refs-before all-refs-linked &&
 	git pack-refs --all --prune &&
 	git for-each-ref >all-refs-packed &&
 	test_cmp all-refs-before all-refs-packed &&
 	test -h .git/packed-refs &&
 	test "$(readlink .git/packed-refs)" = "my-deviant-packed-refs"
 '

 test_done
	#!/bin/sh
	#
	# Copyright (c) 2005 Amos Waterland
	# Copyright (c) 2006 Christian Couder
	#

	test_description='git pack-refs should not change the branch semantic

	This test runs git pack-refs and git show-ref and checks that the branch
	semantic is still the same.
	'
	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

	. ./test-lib.sh

	test_expect_success 'enable reflogs' '
	git config core.logallrefupdates true
	'

	test_expect_success \
	'prepare a trivial repository' \
	'echo Hello > A &&
	git update-index --add A &&
	git commit -m "Initial commit." &&
	HEAD=$(git rev-parse --verify HEAD)'

	SHA1=

	test_expect_success \
	'see if git show-ref works as expected' \
	'git branch a &&
	SHA1=$(cat .git/refs/heads/a) &&
	echo "$SHA1 refs/heads/a" >expect &&
	git show-ref a >result &&
	test_cmp expect result'

	test_expect_success \
	'see if a branch still exists when packed' \
	'git branch b &&
	git pack-refs --all &&
	rm -f .git/refs/heads/b &&
	echo "$SHA1 refs/heads/b" >expect &&
	git show-ref b >result &&
	test_cmp expect result'

	test_expect_success 'git branch c/d should barf if branch c exists' '
	git branch c &&
	git pack-refs --all &&
	rm -f .git/refs/heads/c &&
	test_must_fail git branch c/d
	'

	test_expect_success \
	'see if a branch still exists after git pack-refs --prune' \
	'git branch e &&
	git pack-refs --all --prune &&
	echo "$SHA1 refs/heads/e" >expect &&
	git show-ref e >result &&
	test_cmp expect result'

	test_expect_success 'see if git pack-refs --prune remove ref files' '
	git branch f &&
	git pack-refs --all --prune &&
	! test -f .git/refs/heads/f
	'

	test_expect_success 'see if git pack-refs --prune removes empty dirs' '
	git branch r/s/t &&
	git pack-refs --all --prune &&
	! test -e .git/refs/heads/r
	'

	test_expect_success \
	'git branch g should work when git branch g/h has been deleted' \
	'git branch g/h &&
	git pack-refs --all --prune &&
	git branch -d g/h &&
	git branch g &&
	git pack-refs --all &&
	git branch -d g'

	test_expect_success 'git branch i/j/k should barf if branch i exists' '
	git branch i &&
	git pack-refs --all --prune &&
	test_must_fail git branch i/j/k
	'

	test_expect_success \
	'test git branch k after branch k/l/m and k/lm have been deleted' \
	'git branch k/l &&
	git branch k/lm &&
	git branch -d k/l &&
	git branch k/l/m &&
	git branch -d k/l/m &&
	git branch -d k/lm &&
	git branch k'

	test_expect_success \
	'test git branch n after some branch deletion and pruning' \
	'git branch n/o &&
	git branch n/op &&
	git branch -d n/o &&
	git branch n/o/p &&
	git branch -d n/op &&
	git pack-refs --all --prune &&
	git branch -d n/o/p &&
	git branch n'

	test_expect_success \
	'see if up-to-date packed refs are preserved' \
	'git branch q &&
	git pack-refs --all --prune &&
	git update-ref refs/heads/q refs/heads/q &&
	! test -f .git/refs/heads/q'

	test_expect_success 'pack, prune and repack' '
	git tag foo &&
	git pack-refs --all --prune &&
	git show-ref >all-of-them &&
	git pack-refs &&
	git show-ref >again &&
	test_cmp all-of-them again
	'

	test_expect_success 'explicit pack-refs with dangling packed reference' '
	git commit --allow-empty -m "soon to be garbage-collected" &&
	git pack-refs --all &&
	git reset --hard HEAD^ &&
	git reflog expire --expire=all --all &&
	git prune --expire=all &&
	git pack-refs --all 2>result &&
	test_must_be_empty result
	'

	test_expect_success 'delete ref with dangling packed version' '
	git checkout -b lamb &&
	git commit --allow-empty -m "future garbage" &&
	git pack-refs --all &&
	git reset --hard HEAD^ &&
	git checkout main &&
	git reflog expire --expire=all --all &&
	git prune --expire=all &&
	git branch -d lamb 2>result &&
	test_must_be_empty result
	'

	test_expect_success 'delete ref while another dangling packed ref' '
	git branch lamb &&
	git commit --allow-empty -m "future garbage" &&
	git pack-refs --all &&
	git reset --hard HEAD^ &&
	git reflog expire --expire=all --all &&
	git prune --expire=all &&
	git branch -d lamb 2>result &&
	test_must_be_empty result
	'

	test_expect_success 'pack ref directly below refs/' '
	git update-ref refs/top HEAD &&
	git pack-refs --all --prune &&
	grep refs/top .git/packed-refs &&
	test_path_is_missing .git/refs/top
	'

	test_expect_success 'do not pack ref in refs/bisect' '
	git update-ref refs/bisect/local HEAD &&
	git pack-refs --all --prune &&
	! grep refs/bisect/local .git/packed-refs >/dev/null &&
	test_path_is_file .git/refs/bisect/local
	'

	test_expect_success 'disable reflogs' '
	git config core.logallrefupdates false &&
	rm -rf .git/logs
	'

	test_expect_success 'create packed foo/bar/baz branch' '
	git branch foo/bar/baz &&
	git pack-refs --all --prune &&
	test_path_is_missing .git/refs/heads/foo/bar/baz &&
	test_must_fail git reflog exists refs/heads/foo/bar/baz
	'

	test_expect_success 'notice d/f conflict with existing directory' '
	test_must_fail git branch foo &&
	test_must_fail git branch foo/bar
	'

	test_expect_success 'existing directory reports concrete ref' '
	test_must_fail git branch foo 2>stderr &&
	test_i18ngrep refs/heads/foo/bar/baz stderr
	'

	test_expect_success 'notice d/f conflict with existing ref' '
	test_must_fail git branch foo/bar/baz/extra &&
	test_must_fail git branch foo/bar/baz/lots/of/extra/components
	'

	test_expect_success 'reject packed-refs with unterminated line' '
	cp .git/packed-refs .git/packed-refs.bak &&
	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
	printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
	echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
	test_must_fail git for-each-ref >out 2>err &&
	test_cmp expected_err err
	'

	test_expect_success 'reject packed-refs containing junk' '
	cp .git/packed-refs .git/packed-refs.bak &&
	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
	printf "%s\n" "bogus content" >>.git/packed-refs &&
	echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
	test_must_fail git for-each-ref >out 2>err &&
	test_cmp expected_err err
	'

	test_expect_success 'reject packed-refs with a short SHA-1' '
	cp .git/packed-refs .git/packed-refs.bak &&
	test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
	printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
	printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
	test_must_fail git for-each-ref >out 2>err &&
	test_cmp expected_err err
	'

	test_expect_success 'timeout if packed-refs.lock exists' '
	LOCK=.git/packed-refs.lock &&
	>"$LOCK" &&
	test_when_finished "rm -f $LOCK" &&
	test_must_fail git pack-refs --all --prune
	'

	test_expect_success 'retry acquiring packed-refs.lock' '
	LOCK=.git/packed-refs.lock &&
	>"$LOCK" &&
	test_when_finished "wait && rm -f $LOCK" &&
	{
	( sleep 1 && rm -f $LOCK ) &
	} &&
	git -c core.packedrefstimeout=3000 pack-refs --all --prune
	'

	test_expect_success SYMLINKS 'pack symlinked packed-refs' '
	# First make sure that symlinking works when reading:
	git update-ref refs/heads/lossy refs/heads/main &&
	git for-each-ref >all-refs-before &&
	mv .git/packed-refs .git/my-deviant-packed-refs &&
	ln -s my-deviant-packed-refs .git/packed-refs &&
	git for-each-ref >all-refs-linked &&
	test_cmp all-refs-before all-refs-linked &&
	git pack-refs --all --prune &&
	git for-each-ref >all-refs-packed &&
	test_cmp all-refs-before all-refs-packed &&
	test -h .git/packed-refs &&
	test "$(readlink .git/packed-refs)" = "my-deviant-packed-refs"
	'

	test_done