test: define lagged factor-to-execution contract

tests/test_data_adapter.py

@@ -266,6 +266,17 @@ def test_prepare_execution_inputs_basic(tushare_long: pd.DataFrame) -> None:
     assert volumes.iloc[0, 0] == pytest.approx(1000.0)
 
 
+def test_prepare_execution_inputs_can_select_next_session_open_price(
+    tushare_long: pd.DataFrame,
+) -> None:
+    """显式 price_col=open 时应生成开盘执行价矩阵。"""
+    renamed = rename_tushare_columns(tushare_long)
+
+    prices, _volumes = prepare_execution_inputs(renamed, price_col="open")
+
+    assert prices.iloc[0, 0] == pytest.approx(10.0)
+
+
 def test_prepare_execution_inputs_no_volume() -> None:
     """无 volume 列 → volumes 全 1.0。"""
     df = pd.DataFrame(
@@ -286,6 +297,14 @@ def test_prepare_execution_inputs_missing_close_raises() -> None:
         prepare_execution_inputs(df)
 
 
+def test_prepare_execution_inputs_missing_selected_price_raises() -> None:
+    df = pd.DataFrame(
+        {"stock_code": ["A"], "trade_date": ["2024-01-01"], "close": [10.0]}
+    )
+    with pytest.raises(ValueError, match="缺 open"):
+        prepare_execution_inputs(df, price_col="open")
+
+
 # ── 端到端：长表 → 适配 → alpha158 + execution ──────────────