fix(shell-api): totalSize handles Long values from stats MONGOSH-1126 (#1215)

Author: leorossi

packages/shell-api/src/collection.spec.ts

@@ -1202,17 +1202,18 @@ describe('Collection', () => {
     });
 
     describe('totalSize', () => {
-      let result;
-
-      beforeEach(() => {
-        result = { storageSize: 1000, totalIndexSize: 1000 };
-        serviceProvider.stats.resolves(result);
-      });
-
       it('returns sum of storageSize and totalIndexSize', async() => {
+        const result = { storageSize: 1000, totalIndexSize: 1000 };
+        serviceProvider.stats.resolves(result);
         expect(await collection.totalSize()).to.equal(2000);
         expect(serviceProvider.stats).to.have.been.calledOnceWith('db1', 'coll1');
       });
+      it('should handle Long numbers correctly', async() => {
+        const result = { storageSize: bson.Long.fromNumber(1732749910016), totalIndexSize: 10559533056 };
+        serviceProvider.stats.resolves(result);
+        expect(await collection.totalSize()).to.equal(1743309443072);
+        expect(serviceProvider.stats).to.have.been.calledOnceWith('db1', 'coll1');
+      });
     });
 
     describe('drop', () => {

packages/shell-api/src/collection.ts

@@ -1306,7 +1306,7 @@ export default class Collection extends ShellApiWithMongoClass {
   async totalSize(): Promise<number> {
     this._emitCollectionApiCall('totalSize');
     const stats = await this._mongo._serviceProvider.stats(this._database._name, this._name, await this._database._baseOptions());
-    return (stats.storageSize || 0) + (stats.totalIndexSize || 0);
+    return (Number(stats.storageSize) || 0) + (Number(stats.totalIndexSize) || 0);
   }
 
   /**