diff --git a/test/unit/api/local-storage.spec.js b/test/unit/api/local-storage.spec.js
index 600581554..8d398c767 100644
--- a/test/unit/api/local-storage.spec.js
+++ b/test/unit/api/local-storage.spec.js
@@ -2,7 +2,6 @@
 
 import rimRaf from 'rimraf';
 import path from 'path';
-import fs from 'fs';
 import LocalStorage from '../../../src/lib/local-storage';
 import AppConfig from '../../../src/lib/config';
 // $FlowFixMe
@@ -27,6 +26,13 @@ describe('LocalStorage', () => {
   const pkgNameScoped = `@scope/${pkgName}-scope`;
   const tarballName: string = `${pkgName}-add-tarball-1.0.4.tgz`;
   const tarballName2: string = `${pkgName}-add-tarball-1.0.5.tgz`;
+
+  const getStorage = (LocalStorageClass = LocalStorage) => {
+    const config: Config = new AppConfig(configExample);
+    config.self_path = path.join('../partials/store');
+    return new LocalStorageClass(config, Logger.logger);
+  }
+
   const getPackageMetadataFromStore = (pkgName: string) => {
     return new Promise((resolve) => {
       storage.getPackageMetadata(pkgName, (err, data ) => {
@@ -78,10 +84,7 @@ describe('LocalStorage', () => {
   };
 
   beforeAll(() => {
-    const config: Config = new AppConfig(configExample);
-    config.self_path = path.join('../partials/store');
-
-    storage = new LocalStorage(config, Logger.logger);
+    storage = getStorage();
   });
 
   test('should be defined', () => {
@@ -254,15 +257,24 @@ describe('LocalStorage', () => {
       const metadata = JSON.parse(readMetadata('metadata-update-versions-tags'));
       const pkgName = 'add-update-versions-test-1';
       const version = '1.0.2';
-      beforeAll(async () => {
-        await addPackageToStore(pkgName, generatePackageTemplate(pkgName));
-        await addNewVersion(pkgName, '1.0.1');
-        await addNewVersion(pkgName, version);
+      let _storage;
+      beforeEach(done => {
+        class MockLocalStorage extends LocalStorage {}
+        // $FlowFixMe
+        MockLocalStorage.prototype._writePackage = jest.fn(LocalStorage.prototype._writePackage)
+        _storage = getStorage(MockLocalStorage);
+        rimRaf(path.join(configExample.storage, pkgName), async () => {
+          await addPackageToStore(pkgName, generatePackageTemplate(pkgName));
+          await addNewVersion(pkgName, '1.0.1');
+          await addNewVersion(pkgName, version);
+          done();
+        })
       })
 
       test('should update versions from external source', async (done) => {
-        storage.updateVersions(pkgName, metadata, (err, data) => {
+        _storage.updateVersions(pkgName, metadata, (err, data) => {
           expect(err).toBeNull();
+          expect(_storage._writePackage).toHaveBeenCalledTimes(1);
           expect(data.versions['1.0.1']).toBeDefined();
           expect(data.versions[version]).toBeDefined();
           expect(data.versions['1.0.4']).toBeDefined();
@@ -279,14 +291,13 @@ describe('LocalStorage', () => {
       });
 
       test('should not update if the metadata match', done => {
-        const metadataPath = path.join(configExample.storage, pkgName, 'package.json')
-        const prevStat = fs.statSync(metadataPath)
-        storage.updateVersions(pkgName, metadata, (err, data) => {
-          expect(err).toBeNull()
-          const nextStat = fs.statSync(metadataPath)
-          expect(nextStat).toHaveProperty('ctime', prevStat.ctime)
-          expect(nextStat).toHaveProperty('mtime', prevStat.mtime)
-          done()
+        _storage.updateVersions(pkgName, metadata, e => {
+          expect(e).toBeNull()
+          _storage.updateVersions(pkgName, metadata, err => {
+            expect(err).toBeNull()
+            expect(_storage._writePackage).toHaveBeenCalledTimes(1);
+            done()
+          })
         })
       })
     });