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path: root/t/t2022-checkout-paths.sh
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#!/bin/sh

test_description='checkout $tree -- $paths'
. ./test-lib.sh

test_expect_success setup '
	mkdir dir &&
	>dir/master &&
	echo common >dir/common &&
	git add dir/master dir/common &&
	test_tick && git commit -m "master has dir/master" &&
	git checkout -b next &&
	git mv dir/master dir/next0 &&
	echo next >dir/next1 &&
	git add dir &&
	test_tick && git commit -m "next has dir/next but not dir/master"
'

test_expect_success 'checking out paths out of a tree does not clobber unrelated paths' '
	git checkout next &&
	git reset --hard &&
	rm dir/next0 &&
	cat dir/common >expect.common &&
	echo modified >expect.next1 &&
	cat expect.next1 >dir/next1 &&
	echo untracked >expect.next2 &&
	cat expect.next2 >dir/next2 &&

	git checkout master dir &&

	test_cmp expect.common dir/common &&
	test_path_is_file dir/master &&
	git diff --exit-code master dir/master &&

	test_path_is_missing dir/next0 &&
	test_cmp expect.next1 dir/next1 &&
	test_path_is_file dir/next2 &&
	test_must_fail git ls-files --error-unmatch dir/next2 &&
	test_cmp expect.next2 dir/next2
'

test_expect_success 'do not touch unmerged entries matching $path but not in $tree' '
	git checkout next &&
	git reset --hard &&

	cat dir/common >expect.common &&
	EMPTY_SHA1=$(git hash-object -w --stdin </dev/null) &&
	git rm dir/next0 &&
	cat >expect.next0 <<-EOF &&
	100644 $EMPTY_SHA1 1	dir/next0
	100644 $EMPTY_SHA1 2	dir/next0
	EOF
	git update-index --index-info <expect.next0 &&

	git checkout master dir &&

	test_cmp expect.common dir/common &&
	test_path_is_file dir/master &&
	git diff --exit-code master dir/master &&
	git ls-files -s dir/next0 >actual.next0 &&
	test_cmp expect.next0 actual.next0
'

test_expect_success 'do not touch files that are already up-to-date' '
	git reset --hard &&
	echo one >file1 &&
	echo two >file2 &&
	git add file1 file2 &&
	git commit -m base &&
	echo modified >file1 &&
	test-tool chmtime =1000000000 file2 &&
	git update-index -q --refresh &&
	git checkout HEAD -- file1 file2 &&
	echo one >expect &&
	test_cmp expect file1 &&
	echo "1000000000" >expect &&
	test-tool chmtime --get file2 >actual &&
	test_cmp expect actual
'

test_done