"""Migration boundary: legacy formulas become curated evidence or session proposals."""

from tht.evidence import formula_store
from tht.evidence.formula_store import ConceptFormula


def test_reviewed_formula_migration_has_deterministic_provenance_hash():
    formula = ConceptFormula(
        concept="fascia pediatrica",
        columns=["clinical.patient.birth_date"],
        sql="CASE WHEN age < 18 THEN 'pediatrica' ELSE 'adulta' END",
        status="reviewed",
        sources=["Regola clinica approvata dal gruppo pediatrico."],
    )

    first = formula_store.legacy_formula_to_curated(
        formula, legacy_path="formulas/fascia-pediatrica-1.sql.md",
    )
    second = formula_store.legacy_formula_to_curated(
        formula, legacy_path="formulas/fascia-pediatrica-1.sql.md",
    )

    assert first is not None
    assert second is not None
    assert first.provenance.source_sha256 == second.provenance.source_sha256
    assert first.provenance.source_sha256.startswith("sha256:")