#!/bin/sh

test_description='test git worktree add'

. ./test-lib.sh

test_expect_success 'setup' '
	test_commit init
'

test_expect_success '"add" an existing worktree' '
	mkdir -p existing/subtree &&
	test_must_fail git worktree add --detach existing master
'

test_expect_success '"add" an existing empty worktree' '
	mkdir existing_empty &&
	git worktree add --detach existing_empty master
'

test_expect_success '"add" refuses to checkout locked branch' '
	test_must_fail git worktree add zere master &&
	! test -d zere &&
	! test -d .git/worktrees/zere
'

test_expect_success 'checking out paths not complaining about linked checkouts' '
	(
	cd existing_empty &&
	echo dirty >>init.t &&
	git checkout master -- init.t
	)
'

test_expect_success '"add" worktree' '
	git rev-parse HEAD >expect &&
	git worktree add --detach here master &&
	(
		cd here &&
		test_cmp ../init.t init.t &&
		test_must_fail git symbolic-ref HEAD &&
		git rev-parse HEAD >actual &&
		test_cmp ../expect actual &&
		git fsck
	)
'

test_expect_success '"add" worktree from a subdir' '
	(
		mkdir sub &&
		cd sub &&
		git worktree add --detach here master &&
		cd here &&
		test_cmp ../../init.t init.t
	)
'

test_expect_success '"add" from a linked checkout' '
	(
		cd here &&
		git worktree add --detach nested-here master &&
		cd nested-here &&
		git fsck
	)
'

test_expect_success '"add" worktree creating new branch' '
	git worktree add -b newmaster there master &&
	(
		cd there &&
		test_cmp ../init.t init.t &&
		git symbolic-ref HEAD >actual &&
		echo refs/heads/newmaster >expect &&
		test_cmp expect actual &&
		git fsck
	)
'

test_expect_success 'die the same branch is already checked out' '
	(
		cd here &&
		test_must_fail git checkout newmaster
	)
'

test_expect_success 'not die the same branch is already checked out' '
	(
		cd here &&
		git worktree add --force anothernewmaster newmaster
	)
'

test_expect_success 'not die on re-checking out current branch' '
	(
		cd there &&
		git checkout newmaster
	)
'

test_expect_success '"add" from a bare repo' '
	(
		git clone --bare . bare &&
		cd bare &&
		git worktree add -b bare-master ../there2 master
	)
'

test_expect_success 'checkout from a bare repo without "add"' '
	(
		cd bare &&
		test_must_fail git checkout master
	)
'

test_expect_success 'checkout with grafts' '
	test_when_finished rm .git/info/grafts &&
	test_commit abc &&
	SHA1=`git rev-parse HEAD` &&
	test_commit def &&
	test_commit xyz &&
	echo "`git rev-parse HEAD` $SHA1" >.git/info/grafts &&
	cat >expected <<-\EOF &&
	xyz
	abc
	EOF
	git log --format=%s -2 >actual &&
	test_cmp expected actual &&
	git worktree add --detach grafted master &&
	git --git-dir=grafted/.git log --format=%s -2 >actual &&
	test_cmp expected actual
'

test_expect_success '"add" from relative HEAD' '
	test_commit a &&
	test_commit b &&
	test_commit c &&
	git rev-parse HEAD~1 >expected &&
	git worktree add relhead HEAD~1 &&
	git -C relhead rev-parse HEAD >actual &&
	test_cmp expected actual
'

test_expect_success '"add -b" with <branch> omitted' '
	git worktree add -b burble flornk &&
	test_cmp_rev HEAD burble
'

test_expect_success '"add" with <branch> omitted' '
	git worktree add wiffle/bat &&
	test_cmp_rev HEAD bat
'

test_expect_success '"add" auto-vivify does not clobber existing branch' '
	test_commit c1 &&
	test_commit c2 &&
	git branch precious HEAD~1 &&
	test_must_fail git worktree add precious &&
	test_cmp_rev HEAD~1 precious &&
	test_path_is_missing precious
'

test_done