test_must_fail git for-each-ref --merged HEAD --no-merged HEAD
'
+test_expect_success 'validate worktree atom' '
+ cat >expect <<-EOF &&
+ master: $(pwd)
+ master_worktree: $(pwd)/worktree_dir
+ side: not checked out
+ EOF
+ git worktree add -b master_worktree worktree_dir master &&
+ git for-each-ref --format="%(refname:short): %(if)%(worktreepath)%(then)%(worktreepath)%(else)not checked out%(end)" refs/heads/ >actual &&
+ rm -r worktree_dir &&
+ git worktree prune &&
+ test_cmp expect actual
+'
+
test_done