)
'
+test_expect_success '"add" <path> <non-existent-branch> fails' '
+ test_must_fail git worktree add foo non-existent
+'
+
+test_expect_success '"add" <path> <branch> dwims' '
+ test_when_finished rm -rf repo_upstream repo_dwim foo &&
+ setup_remote_repo repo_upstream repo_dwim &&
+ git init repo_dwim &&
+ (
+ cd repo_dwim &&
+ git worktree add ../foo foo
+ ) &&
+ (
+ cd foo &&
+ test_branch_upstream foo repo_upstream foo &&
+ test_cmp_rev refs/remotes/repo_upstream/foo refs/heads/foo
+ )
+'
+
test_done