from src.metals_mcp.mcp_tools import client, get_capabilities, get_candles, get_last_candle, get_price


def test_capabilities():
    caps = get_capabilities()
    assert caps["server"] == "metals-mcp"


def test_scaffold_tools():
    assert get_price("XAU/USD")["symbol"] == "XAU/USD"
    assert get_candles("XAU/USD")["candles"] == []
    assert get_last_candle("XAU/USD")["candle"] is None


def test_price_supports_counter_currency(monkeypatch):
    monkeypatch.setattr(client, "pair_is_supported", lambda symbol, counter_currency=None: True)

    class DummyQuote:
        mid = 4049.0
        timestamp = 1234567890

    monkeypatch.setattr(client, "fetch_quote", lambda pair: DummyQuote())
    quote = get_price("XAU", counter_currency="EUR")
    assert quote["pair"] == "XAU/EUR"
    assert quote["counter_currency"] == "EUR"
    assert quote["price"] == 4049.0