#!/bin/sh

test_description='checkout from unborn branch'
. ./test-lib.sh

test_expect_success 'setup' '
        mkdir parent &&
        (cd parent &&
         git init &&
         echo content >file &&
         git add file &&
         git commit -m base
        ) &&
        git fetch parent master:origin
'

test_expect_success 'checkout from unborn preserves untracked files' '
        echo precious >expect &&
        echo precious >file &&
        test_must_fail git checkout -b new origin &&
        test_cmp expect file
'

test_expect_success 'checkout from unborn preserves index contents' '
        echo precious >expect &&
        echo precious >file &&
        git add file &&
        test_must_fail git checkout -b new origin &&
        test_cmp expect file &&
        git show :file >file &&
        test_cmp expect file
'

test_expect_success 'checkout from unborn merges identical index contents' '
        echo content >file &&
        git add file &&
        git checkout -b new origin
'

test_expect_success 'checking out another branch from unborn state' '
        git checkout --orphan newroot &&
        git checkout -b anothername &&
        test_must_fail git show-ref --verify refs/heads/newroot &&
        git symbolic-ref HEAD >actual &&
        echo refs/heads/anothername >expect &&
        test_cmp expect actual
'

test_expect_success 'checking out in a newly created repo' '
        test_create_repo empty &&
        (
                cd empty &&
                git symbolic-ref HEAD >expect &&
                test_must_fail git checkout &&
                git symbolic-ref HEAD >actual &&
                test_cmp expect actual
        )
'

test_done