"""Shared fixtures for the finance test suite.

The AI-spending service caches its canonical ``_collect_period_rows``
result in a module-global keyed by ``(period_start, period_end_excl)``
with a 60s TTL. Finance tests drive the AI collector (via the spend
coordinator) with DIFFERENT data for the SAME period across tests, so
that cache leaks between tests — one test's empty AI window would be
served to the next test that seeded real AI cost. Invalidate it around
every finance test so each runs against a clean cache.
"""
from __future__ import annotations

import pytest


@pytest.fixture(autouse=True)
def _invalidate_ai_period_cache():
    from app.domains.ai_spending.service import invalidate_period_rows_cache

    invalidate_period_rows_cache()
    yield
    invalidate_period_rows_cache()