import math
import sys, os

# Ensure src is on sys.path for test imports when running from repo root
SRC_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "src"))
if SRC_PATH not in sys.path:
    sys.path.insert(0, SRC_PATH)

try:
    from edgemarketsignal.core import EdgeSignalProcessor, SharedSignals
except Exception:
    from edgemarketsignal.core import EdgeSignalProcessor, SharedSignals


def test_extract_signals_basic():
    feed = {
        "venue": "A",
        "best_bid": (100.0, 5),  # price, size
        "best_ask": (100.5, 6),
        "last_trade": (100.2, 1),
    }
    sig = EdgeSignalProcessor.extract_signals(feed)
    assert isinstance(sig, SharedSignals)
    # mid-price should be average of bid/ask
    assert math.isclose(sig.mid_price, 100.25, rel_tol=1e-6)
    # liquidity is sum of sizes
    assert sig.liquidity == 11
    assert sig.venue == "A"