Added descriptive error

Author: 9trocode

index.js

@@ -5,17 +5,20 @@ const AWS3 = require('./lib/S3StorageSystem');
 class StorageFactory {
     static getInstance(storageMode, Region) {
         if (!storageMode) {
-            throw new Error('Please add a storage Mode');
+            throw new Error('Please add a storage Instance');
         }
         if (storageMode === 'GCLOUD') {
             return new GCLOUD();
         }
-        if (storageMode === 'AWS') {
+        else if (storageMode === 'AWS') {
             return new AWS3(Region);
         }
-        if (storageMode === 'NFS') {
+        else if (storageMode === 'NFS') {
             return new NFS();
         }
+        else {
+            throw new Error(`Cant recognize instance of ${storageMode}, Please Specify Instance of AWS, GCLOUD, NFS`);
+        }
     }
 }
 

test/sdk.test.js

@@ -6,9 +6,9 @@ describe('Simple Storage Test', () => {
 
     //First stage Unit Test
     it('should run', () => {
-      let StorageInstance =  storageSystem.getInstance('AWS', 'Asia');
+      let StorageInstance =  storageSystem.getInstance('AWS', '');
           StorageInstance.download('smc-v1-dev', 'dev_key.key', '/Users/nitrocode/tmp/');
-      console.log(StorageInstance);
+          console.log(StorageInstance);
     });
 
 });