feat(stock-lab): RsRating 노드 — IBD 가중 시장초과수익 백분위

stock-lab/app/test_screener_nodes_rs_rating.py

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+import datetime as dt
+import pandas as pd
+
+from app.screener.engine import ScreenContext
+from app.screener.nodes.rs_rating import RsRating
+from app.screener._test_fixtures import make_master, make_prices, make_flow, make_kospi
+
+
+def _ctx(master, prices, flow, kospi):
+    return ScreenContext(master=master, prices=prices, flow=flow,
+                         kospi=kospi, asof=dt.date(2026, 5, 12))
+
+
+def test_outperformer_gets_higher_score():
+    asof = dt.date(2026, 5, 12)
+    master = make_master(["UP", "DN"])
+    up = make_prices(["UP"], days=260, asof=asof, trend_pct=0.3)
+    dn = make_prices(["DN"], days=260, asof=asof, trend_pct=-0.1)
+    prices = pd.concat([up, dn], ignore_index=True)
+    flow = make_flow(["UP", "DN"], days=260, asof=asof)
+    kospi = make_kospi(days=260, asof=asof, trend_pct=0.0)
+
+    out = RsRating().compute(_ctx(master, prices, flow, kospi),
+                             RsRating.default_params)
+    assert out["UP"] > out["DN"]