Function judge 

pub fn judge(
    root: &Path,
    path: &str,
    session: Option<&str>,
    claims: impl FnOnce() -> ClaimSource,
) -> EditVerdict

Judge an edit of path by session in the checkout at root, reading every fact. claims is asked only when the cheaper facts have not already decided.

use majordomus_cli::guard::judge;

let dir = tempfile::tempdir().unwrap();
// no manifest, so no policy: nothing is enforced, and the mesh is never asked
let v = judge(dir.path(), "a.md", None, || unreachable!("the claims are not needed"));
assert!(v.allowed);
assert_eq!((v.path.as_str(), v.ground.as_str()), ("a.md", "undecided"));