Improve jq microcap execution semantics

crates/fidc-core/tests/strategy_selection.rs

@@ -1,5 +1,8 @@
 use chrono::NaiveDate;
-use fidc_core::{CnSmallCapRotationConfig, CnSmallCapRotationStrategy, DataSet, Strategy, StrategyContext, PortfolioState};
+use fidc_core::{
+    CnSmallCapRotationConfig, CnSmallCapRotationStrategy, DataSet, JqMicroCapConfig,
+    JqMicroCapStrategy, PortfolioState, Strategy, StrategyContext,
+};
 use std::path::PathBuf;
 
 #[test]
@@ -28,9 +31,51 @@ fn strategy_emits_target_weights_and_diagnostics() {
     assert!(decision.rebalance);
     assert!(decision.rebalance);
     assert!(!decision.diagnostics.is_empty());
-    assert!(decision
-        .diagnostics
-        .iter()
-        .any(|line| line.contains("signal_symbol=")));
+    assert!(
+        decision
+            .diagnostics
+            .iter()
+            .any(|line| line.contains("signal_symbol="))
+    );
     assert_eq!(strategy.name(), "cn-dyn-smallcap-band");
 }
+
+#[test]
+fn jq_strategy_emits_same_day_decision() {
+    let data_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("../../data/demo");
+    let data = DataSet::from_csv_dir(&data_dir).expect("demo data");
+    let execution_date = NaiveDate::from_ymd_opt(2024, 1, 10).unwrap();
+    let portfolio = PortfolioState::new(1_000_000.0);
+    let mut cfg = JqMicroCapConfig::jq_microcap();
+    cfg.benchmark_signal_symbol = "000001.SZ".to_string();
+    cfg.benchmark_short_ma_days = 3;
+    cfg.benchmark_long_ma_days = 5;
+    cfg.stock_short_ma_days = 3;
+    cfg.stock_mid_ma_days = 4;
+    cfg.stock_long_ma_days = 5;
+    let mut strategy = JqMicroCapStrategy::new(cfg);
+
+    let decision = strategy
+        .on_day(&StrategyContext {
+            execution_date,
+            decision_date: execution_date,
+            decision_index: 0,
+            data: &data,
+            portfolio: &portfolio,
+        })
+        .expect("jq decision");
+
+    assert!(!decision.rebalance);
+    assert!(
+        decision
+            .diagnostics
+            .iter()
+            .any(|line| line.contains("jq_microcap signal="))
+    );
+    assert!(
+        decision
+            .diagnostics
+            .iter()
+            .any(|line| line.contains("selected="))
+    );
+}