"""Pytest fixtures for the fpcf conformance test suite.

A single deterministic vector suite is generated once per test session into
a temporary directory; most tests consume it read-only.  Tests that need to
mutate vectors on disk generate their own copy into a function-scoped
``tmp_path``.
"""
from __future__ import annotations

from pathlib import Path

import pytest

from fpcf import vectors as fpcf_vectors

from helpers import DEFAULT_SEED, load_json


@pytest.fixture(scope="session")
def vectors_dir(tmp_path_factory) -> Path:
    out = tmp_path_factory.mktemp("fpcf-vectors")
    fpcf_vectors.generate_vectors(out, seed=DEFAULT_SEED)
    return out


@pytest.fixture(scope="session")
def manifest(vectors_dir: Path) -> dict:
    return load_json(vectors_dir / "manifest.json")