Make memory lru gc the default

Author: wu-hui

packages/firestore/src/api/cache_config.ts

@@ -62,7 +62,9 @@ class MemoryLocalCacheImpl implements MemoryLocalCache {
       this._offlineComponentProvider =
         settings.garbageCollector._offlineComponentProvider;
     } else {
-      this._offlineComponentProvider = new MemoryOfflineComponentProvider();
+      this._offlineComponentProvider = new LruGcMemoryOfflineComponentProvider(
+        undefined
+      );
     }
   }
 

packages/firestore/src/core/firestore_client.ts

@@ -64,6 +64,7 @@ import { Aggregate } from './aggregate';
 import { NamedQuery } from './bundle';
 import {
   ComponentConfiguration,
+  LruGcMemoryOfflineComponentProvider,
   MemoryOfflineComponentProvider,
   OfflineComponentProvider,
   OnlineComponentProvider
@@ -339,7 +340,7 @@ async function ensureOfflineComponents(
       logDebug(LOG_TAG, 'Using default OfflineComponentProvider');
       await setOfflineComponentProvider(
         client,
-        new MemoryOfflineComponentProvider()
+        new LruGcMemoryOfflineComponentProvider(undefined)
       );
     }
   }

packages/firestore/test/integration/util/helpers.ts

@@ -254,6 +254,51 @@ export function withTestDb(
   });
 }
 
+export function withEnsuredEagerGcTestDb(
+  fn: (db: Firestore) => Promise<void>
+): Promise<void> {
+  const newSettings = { ...DEFAULT_SETTINGS };
+  newSettings.localCache = memoryLocalCache({
+    garbageCollector: memoryEagerGarbageCollector()
+  });
+  return withTestDbsSettings(
+    false,
+    DEFAULT_PROJECT_ID,
+    newSettings,
+    1,
+    async ([db]) => {
+      return fn(db);
+    }
+  );
+}
+
+export function withEnsuredLruGcTestDb(
+  persistence: boolean,
+  fn: (db: Firestore) => Promise<void>
+): Promise<void> {
+  const newSettings = { ...DEFAULT_SETTINGS };
+  if (persistence) {
+    newSettings.localCache = persistentLocalCache({
+      cacheSizeBytes: 1 * 1024 * 1024
+    });
+  } else {
+    newSettings.localCache = memoryLocalCache({
+      garbageCollector: memoryLruGarbageCollector({
+        cacheSizeBytes: 1 * 1024 * 1024
+      })
+    });
+  }
+  return withTestDbsSettings(
+    persistence,
+    DEFAULT_PROJECT_ID,
+    newSettings,
+    1,
+    async ([db]) => {
+      return fn(db);
+    }
+  );
+}
+
 /** Runs provided fn with a db for an alternate project id. */
 export function withAlternateTestDb(
   persistence: PersistenceMode | typeof PERSISTENCE_MODE_UNSPECIFIED,