diff --git a/squarenotsquare/__mock__/mockRealmObject.js b/squarenotsquare/__mock__/mockRealmObject.js
index a32e1cc..cebcc79 100644
--- a/squarenotsquare/__mock__/mockRealmObject.js
+++ b/squarenotsquare/__mock__/mockRealmObject.js
@@ -1,14 +1,14 @@
-import { Score } from "../src/realm/entities/Score";
-import { System } from "../src/realm/entities/System";
-import { User } from "../src/realm/entities/User";
+import { ScoreEntity } from "../src/realm/entities/Score";
+import { SystemEntity } from "../src/realm/entities/System";
+import { UserEntity } from "../src/realm/entities/User";
 
-export class MockRealm{
+export default class MockRealm{
 
-  constructor(schemaVersion){
-    this.schemaVersion = schemaVersion;
-    this[System.name] = [];
-    this[Score.name] = [];
-    this[User.name] = [];
+  constructor(params){
+    this.schemaVersion = params.schemaVersion;
+    this[SystemEntity.name] = [];
+    this[ScoreEntity.name] = [];
+    this[UserEntity.name] = [];
     this.deletedKeys = [];
   }
 
@@ -29,4 +29,19 @@ export class MockRealm{
   delete(key){
     this.deletedKeys.push(key);
   }
+
+  static defaultPath = '';
+  static schemaVersion(path, key){
+    if (path === 'negTest') {
+      return -1;
+    } else if (path === 'breakDB') {
+      throw 'Existing DB is broken';
+    } else {
+      return 0;
+    }
+  }
+
+  close(){
+    return null;
+  }
 }
\ No newline at end of file