fix(core): update

test/test.ts

@@ -213,6 +213,7 @@ tap.test('should ', async () => {})
 // close the database connection
 // =======================================
 tap.test('should close the database connection', async (tools) => {
+  await testDb.mongoDb.dropDatabase();
   await testDb.close();
   try {
     await mongod.stop();

ts/smartdata.classes.collection.ts

@@ -70,6 +70,15 @@ export interface IManager {
         }
         return collectionFactory.getCollection(constructor.name, dbArg);
       }
+      public static get manager() {
+        let manager: TManager;
+        if (managerArg['db']) {
+          manager = (managerArg as TManager);
+        } else {
+          manager = (managerArg as TDelayed<TManager>)();
+        }
+        return manager;
+      }
       public get manager() {
         let manager: TManager;
         if (managerArg['db']) {

ts/smartdata.classes.doc.ts

@@ -47,6 +47,7 @@ export class SmartDataDbDoc<T extends TImplements, TImplements, TManager extends
    */
   public static collection: SmartdataCollection<any>;
   public collection: SmartdataCollection<any>;
+  public static manager: TManager;
   public manager: TManager;
 
   /**