diff --git a/test/repositories/InMemoryParkingRepositoryTests.test.ts b/test/repositories/InMemoryParkingRepositoryTests.test.ts
index d358d14..41ea843 100644
--- a/test/repositories/InMemoryParkingRepositoryTests.test.ts
+++ b/test/repositories/InMemoryParkingRepositoryTests.test.ts
@@ -1,5 +1,8 @@
-import { beforeEach, describe, expect, it } from "@jest/globals";
-import { InMemoryParkingRepository } from "../../src/repositories/InMemoryParkingRepository";
+import { beforeEach, describe, expect, it, jest } from "@jest/globals";
+import {
+  InMemoryParkingRepository,
+  PARKING_LOGGING_INTERVAL_MS
+} from "../../src/repositories/InMemoryParkingRepository";
 import { IParkingStructure } from "../../src/entities/ParkingRepositoryEntities";
 
 describe("InMemoryParkingRepository", () => {
@@ -16,9 +19,11 @@ describe("InMemoryParkingRepository", () => {
     address: "300 E Walnut Ave, Orange, CA 92867",
     updatedTime: new Date(),
   };
+  let historicalData = new Map();
 
   beforeEach(() => {
-    repository = new InMemoryParkingRepository();
+    historicalData = new Map();
+    repository = new InMemoryParkingRepository(new Map(), historicalData);
   });
 
   describe("addOrUpdateParkingStructure", () => {
@@ -35,6 +40,42 @@ describe("InMemoryParkingRepository", () => {
       const result = await repository.getParkingStructureById(testStructure.id);
       expect(result).toEqual(updatedStructure);
     });
+
+    it("should log historical data if past the logging interval", async () => {
+      const now = Date.now();
+      jest
+        .useFakeTimers()
+        .setSystemTime(now);
+
+      const expectedTimestampRecordMatcher = {
+        spotsAvailable: testStructure.spotsAvailable,
+        id: testStructure.id,
+        timestampMs: now,
+      }
+
+      await repository.addOrUpdateParkingStructure(testStructure);
+      jest.setSystemTime(now + PARKING_LOGGING_INTERVAL_MS + 60);
+      await repository.addOrUpdateParkingStructure(testStructure);
+
+      expect(historicalData.get(testStructure.id)).toContain(expectedTimestampRecordMatcher);
+      expect(historicalData.get(testStructure.id)).toContain({
+        ...expectedTimestampRecordMatcher,
+        timestampMs: now + PARKING_LOGGING_INTERVAL_MS + 60,
+      });
+    });
+
+    it("should not log historical data if not past the logging interval", async () => {
+      const now = Date.now();
+      jest
+        .useFakeTimers()
+        .setSystemTime(now);
+
+      await repository.addOrUpdateParkingStructure(testStructure);
+      jest.setSystemTime(now + 60);
+      await repository.addOrUpdateParkingStructure(testStructure);
+
+      expect(historicalData.get(testStructure.id)).toHaveLength(1);
+    });
   });
 
   describe("removeParkingStructureIfExists", () => {