integration tests

adapters/racing/persistence/inmemory/InMemorySponsorshipRequestRepository.ts

@@ -109,4 +109,8 @@ export class InMemorySponsorshipRequestRepository implements SponsorshipRequestR
     this.logger.debug(`[InMemorySponsorshipRequestRepository] Checking existence of request with ID: ${id}.`);
     return Promise.resolve(this.requests.has(id));
   }
+
+  clear(): void {
+    this.requests.clear();
+  }
 }