integration tests

core/racing/application/use-cases/RankingUseCase.ts

@@ -43,4 +43,9 @@ export class RankingUseCase {
 
     return rankings;
   }
+
+  clear(): void {
+    this._logger.info('[RankingUseCase] Clearing all rankings');
+    // No data to clear as this use case generates data on-the-fly
+  }
 }