# -*- coding: utf-8 -*-
"""Tests for provider router fallback behavior."""

from backend.data.provider_router import DataProviderRouter
from backend.config.data_config import reset_config


def test_router_includes_local_csv_fallback(monkeypatch):
    monkeypatch.delenv("FINNHUB_API_KEY", raising=False)
    monkeypatch.delenv("FINANCIAL_DATASETS_API_KEY", raising=False)
    monkeypatch.delenv("FIN_DATA_SOURCE", raising=False)
    monkeypatch.delenv("ENABLED_DATA_SOURCES", raising=False)
    reset_config()

    router = DataProviderRouter()

    assert router.price_sources() == ["local_csv"]


def test_router_allows_yfinance_when_enabled(monkeypatch):
    monkeypatch.setenv("FIN_DATA_SOURCE", "yfinance")
    monkeypatch.setenv("ENABLED_DATA_SOURCES", "yfinance,local_csv")
    monkeypatch.delenv("FINNHUB_API_KEY", raising=False)
    monkeypatch.delenv("FINANCIAL_DATASETS_API_KEY", raising=False)
    reset_config()

    router = DataProviderRouter()

    assert router.price_sources() == ["yfinance", "local_csv"]
    assert router.api_sources() == ["yfinance"]