git/t/t0028-working-tree-encoding.sh

#!/bin/sh

test_description='working-tree-encoding conversion via gitattributes'

. ./test-lib.sh

test_expect_success 'setup test files' '
	git config core.eol lf &&

	text="hallo there!\ncan you read me?" &&
	echo "*.utf16 text working-tree-encoding=utf-16" >.gitattributes &&
	printf "$text" >test.utf8.raw &&
	printf "$text" | iconv -f UTF-8 -t UTF-16 >test.utf16.raw &&
	printf "$text" | iconv -f UTF-8 -t UTF-32 >test.utf32.raw &&

	# Line ending tests
	printf "one\ntwo\nthree\n" >lf.utf8.raw &&
	printf "one\r\ntwo\r\nthree\r\n" >crlf.utf8.raw &&

	# BOM tests
	printf "\0a\0b\0c"                         >nobom.utf16be.raw &&
	printf "a\0b\0c\0"                         >nobom.utf16le.raw &&
	printf "\376\777\0a\0b\0c"                 >bebom.utf16be.raw &&
	printf "\777\376a\0b\0c\0"                 >lebom.utf16le.raw &&
	printf "\0\0\0a\0\0\0b\0\0\0c"             >nobom.utf32be.raw &&
	printf "a\0\0\0b\0\0\0c\0\0\0"             >nobom.utf32le.raw &&
	printf "\0\0\376\777\0\0\0a\0\0\0b\0\0\0c" >bebom.utf32be.raw &&
	printf "\777\376\0\0a\0\0\0b\0\0\0c\0\0\0" >lebom.utf32le.raw &&

	# Add only UTF-16 file, we will add the UTF-32 file later
	cp test.utf16.raw test.utf16 &&
	cp test.utf32.raw test.utf32 &&
	git add .gitattributes test.utf16 &&
	git commit -m initial
'

test_expect_success 'ensure UTF-8 is stored in Git' '
	test_when_finished "rm -f test.utf16.git" &&

	git cat-file -p :test.utf16 >test.utf16.git &&
	test_cmp_bin test.utf8.raw test.utf16.git
'

test_expect_success 're-encode to UTF-16 on checkout' '
	test_when_finished "rm -f test.utf16.raw" &&

	rm test.utf16 &&
	git checkout test.utf16 &&
	test_cmp_bin test.utf16.raw test.utf16
'

test_expect_success 'check $GIT_DIR/info/attributes support' '
	test_when_finished "rm -f test.utf32.git" &&
	test_when_finished "git reset --hard HEAD" &&

	echo "*.utf32 text working-tree-encoding=utf-32" >.git/info/attributes &&
	git add test.utf32 &&

	git cat-file -p :test.utf32 >test.utf32.git &&
	test_cmp_bin test.utf8.raw test.utf32.git
'

for i in 16 32
do
	test_expect_success "eol conversion for UTF-${i} encoded files on checkout" '
		test_when_finished "rm -f crlf.utf${i}.raw lf.utf${i}.raw" &&
		test_when_finished "git reset --hard HEAD^" &&

		cat lf.utf8.raw | iconv -f UTF-8 -t UTF-${i} >lf.utf${i}.raw &&
		cat crlf.utf8.raw | iconv -f UTF-8 -t UTF-${i} >crlf.utf${i}.raw &&
		cp crlf.utf${i}.raw eol.utf${i} &&

		cat >expectIndexLF <<-EOF &&
			i/lf    w/-text attr/text             	eol.utf${i}
		EOF

		git add eol.utf${i} &&
		git commit -m eol &&

		# UTF-${i} with CRLF (Windows line endings)
		rm eol.utf${i} &&
		git -c core.eol=crlf checkout eol.utf${i} &&
		test_cmp_bin crlf.utf${i}.raw eol.utf${i} &&

		# Although the file has CRLF in the working tree,
		# ensure LF in the index
		git ls-files --eol eol.utf${i} >actual &&
		test_cmp expectIndexLF actual &&

		# UTF-${i} with LF (Unix line endings)
		rm eol.utf${i} &&
		git -c core.eol=lf checkout eol.utf${i} &&
		test_cmp_bin lf.utf${i}.raw eol.utf${i} &&

		# The file LF in the working tree, ensure LF in the index
		git ls-files --eol eol.utf${i} >actual &&
		test_cmp expectIndexLF actual
	'
done

test_expect_success 'check unsupported encodings' '
	test_when_finished "git reset --hard HEAD" &&

	echo "*.set text working-tree-encoding" >.gitattributes &&
	printf "set" >t.set &&
	test_must_fail git add t.set 2>err.out &&
	test_i18ngrep "true/false are no valid working-tree-encodings" err.out &&

	echo "*.unset text -working-tree-encoding" >.gitattributes &&
	printf "unset" >t.unset &&
	git add t.unset &&

	echo "*.empty text working-tree-encoding=" >.gitattributes &&
	printf "empty" >t.empty &&
	git add t.empty &&

	echo "*.garbage text working-tree-encoding=garbage" >.gitattributes &&
	printf "garbage" >t.garbage &&
	test_must_fail git add t.garbage 2>err.out &&
	test_i18ngrep "failed to encode" err.out
'

test_expect_success 'error if encoding round trip is not the same during refresh' '
	BEFORE_STATE=$(git rev-parse HEAD) &&
	test_when_finished "git reset --hard $BEFORE_STATE" &&

	# Add and commit a UTF-16 file but skip the "working-tree-encoding"
	# filter. Consequently, the in-repo representation is UTF-16 and not
	# UTF-8. This simulates a Git version that has no working tree encoding
	# support.
	echo "*.utf16le text working-tree-encoding=utf-16le" >.gitattributes &&
	echo "hallo" >nonsense.utf16le &&
	TEST_HASH=$(git hash-object --no-filters -w nonsense.utf16le) &&
	git update-index --add --cacheinfo 100644 $TEST_HASH nonsense.utf16le &&
	COMMIT=$(git commit-tree -p $(git rev-parse HEAD) -m "plain commit" $(git write-tree)) &&
	git update-ref refs/heads/master $COMMIT &&

	test_must_fail git checkout HEAD^ 2>err.out &&
	test_i18ngrep "error: .* overwritten by checkout:" err.out
'

test_done