integration tests

adapters/racing/persistence/inmemory/InMemoryRaceRepository.ts

@@ -105,4 +105,8 @@ export class InMemoryRaceRepository implements RaceRepository {
     this.logger.debug(`[InMemoryRaceRepository] Checking existence of race with ID: ${id}.`);
     return Promise.resolve(this.races.has(id));
   }
+
+  clear(): void {
+    this.races.clear();
+  }
 }