git worktree add --detach existing_empty master
'
+test_expect_success '"add" using shorthand - fails when no previous branch' '
+ test_must_fail git worktree add existing_short -
+'
+
+test_expect_success '"add" using - shorthand' '
+ git checkout -b newbranch &&
+ echo hello >myworld &&
+ git add myworld &&
+ git commit -m myworld &&
+ git checkout master &&
+ git worktree add short-hand - &&
+ echo refs/heads/newbranch >expect &&
+ git -C short-hand rev-parse --symbolic-full-name HEAD >actual &&
+ test_cmp expect actual
+'
+
test_expect_success '"add" refuses to checkout locked branch' '
test_must_fail git worktree add zere master &&
! test -d zere &&
)
'
+test_expect_success '"add" default branch of a bare repo' '
+ (
+ git clone --bare . bare2 &&
+ cd bare2 &&
+ git worktree add ../there3 master
+ )
+'
+
test_expect_success 'checkout with grafts' '
test_when_finished rm .git/info/grafts &&
test_commit abc &&