spec: update mock

__mocks__/hydrooj.ts

@@ -0,0 +1 @@
+export * from '../packages/hydrooj/src/loader';

packages/geoip/test/lib.spec.ts

@@ -1,4 +1,3 @@
-jest.mock('hydrooj/src/loader');
 import 'hydrooj';
 import 'hydrooj/src/lib/i18n';
 import * as lib from '@hydrooj/geoip/lib';

packages/hydrooj/src/model/oplog.ts

@@ -4,8 +4,8 @@ import * as db from '../service/db';
 
 export const coll = db.collection('oplog');
 
-export async function add(data: Partial<OplogDoc>): Promise<ObjectID> {
-    const res = await coll.insertOne(data);
+export async function add(data: Partial<OplogDoc> & { type: string }): Promise<ObjectID> {
+    const res = await coll.insertOne({ _id: new ObjectID(), ...data });
     return res.insertedId;
 }