diff --git a/crates/fidc-core/src/platform_expr_strategy.rs b/crates/fidc-core/src/platform_expr_strategy.rs
index 9c022d9..bed9bbd 100644
--- a/crates/fidc-core/src/platform_expr_strategy.rs
+++ b/crates/fidc-core/src/platform_expr_strategy.rs
@@ -14642,7 +14642,9 @@ mod tests {
         let result = engine.run().unwrap();
         let records = rows.lock().unwrap();
         assert_eq!(records.len(), dates.len());
-        assert!(result.fills.len() > 1);
+        assert!(result.fills.len() > 1, "fills={} orders={:?} diagnostics={:?}", result.fills.len(),
+            result.order_events.iter().take(4).collect::<Vec<_>>(),
+            result.equity_curve.iter().take(3).map(|row| &row.diagnostics).collect::<Vec<_>>());
         assert_eq!(result.equity_curve[5].external_cash_flow, 10_000.0);
         assert!(records.iter().any(|(_, decision)| decision.newly_triggered));
         for ((session, decision), equity) in records.iter().zip(&result.equity_curve) {