#!/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 SYMLINKS 'die the same branch is already checked out (symlink)' '
        head=$(git -C there rev-parse --git-path HEAD) &&
        ref=$(git -C there symbolic-ref HEAD) &&
        rm "$head" &&
        ln -s "$ref" "$head" &&
        test_must_fail git -C here 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