import pytest

# Ensure the src layout is on PYTHONPATH for tests without installing the package
import os
import sys

ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
SRC = os.path.join(ROOT, "src")
if SRC not in sys.path:
    sys.path.insert(0, SRC)

from idea34_openpassmarket_privacy_preserving.core import LocalProblem, PassSpec, PrivacyBudget, to_contract_message


def test_to_contract_message_deterministic():
    lp = LocalProblem(
        problem_id="p1",
        code_region="def f(): pass",
        inlining_decisions={},
        loop_tiling_params={},
        vectorization_hints={},
        constraints={},
    )
    spec = PassSpec(pass_id="pass_01", language="Python", target_IR="IR1", transform_type="mutate")
    budget = PrivacyBudget(budget=5.0, leakage_model="Laplace")

    msg1 = to_contract_message(lp, spec, budget)
    msg2 = to_contract_message(lp, spec, budget)

    # Deterministic content (timestamp can differ between invocations)
    assert msg1["local_problem"] == msg2["local_problem"]
    assert msg1["pass_spec"] == msg2["pass_spec"]
    assert msg1["privacy_budget"] == msg2["privacy_budget"]
    assert "timestamp" in msg1