Only bother mocking Date.now

Author: keelerm84

packages/shared/akamai-edgeworker-sdk/__tests__/featureStore/cacheableStore.test.ts

@@ -66,21 +66,23 @@ describe('given a mock edge provider with test data', () => {
     });
 
     it('caches expires after duration', async () => {
+      jest.spyOn(Date, 'now').mockImplementation(() => 0);
       const cacheProvider = new CacheableStoreProvider(mockEdgeProvider, 'rootKey', 50);
       await cacheProvider.get('rootKey');
       await cacheProvider.get('rootKey');
       expect(mockGet).toHaveBeenCalledTimes(1);
 
-      await jest.advanceTimersByTimeAsync(20);
+      jest.spyOn(Date, 'now').mockImplementation(() => 20);
       await cacheProvider.get('rootKey');
       expect(mockGet).toHaveBeenCalledTimes(1);
 
-      await jest.advanceTimersByTimeAsync(30);
+      jest.spyOn(Date, 'now').mockImplementation(() => 50);
       await cacheProvider.get('rootKey');
       expect(mockGet).toHaveBeenCalledTimes(2);
     });
 
     it('prefetch respects cache TTL', async () => {
+      jest.spyOn(Date, 'now').mockImplementation(() => 0);
       const cacheProvider = new CacheableStoreProvider(mockEdgeProvider, 'rootKey', 50);
       await cacheProvider.get('rootKey');
       await cacheProvider.get('rootKey');
@@ -90,7 +92,7 @@ describe('given a mock edge provider with test data', () => {
       await cacheProvider.get('rootKey');
       expect(mockGet).toHaveBeenCalledTimes(1);
 
-      await jest.advanceTimersByTimeAsync(50);
+      jest.spyOn(Date, 'now').mockImplementation(() => 50);
       await cacheProvider.prefetchPayloadFromOriginStore();
       await cacheProvider.get('rootKey');
       expect(mockGet).toHaveBeenCalledTimes(2);

packages/shared/akamai-edgeworker-sdk/src/featureStore/cacheableStoreProvider.ts

@@ -70,7 +70,7 @@ export default class CacheableStoreProvider implements EdgeProvider {
   private _isCacheValid(): boolean {
     // If we don't have a cache, or we don't know how old the cache is, we have
     // to consider it is invalid.
-    if (!this.cache || !this.cachedAt) {
+    if (!this.cache || this.cachedAt === undefined) {
       return false;
     }