diff --git a/app/src/main/java/lightcontainer/storage/AppData.java b/app/src/main/java/lightcontainer/storage/AppData.java
index 10ddeb8..2b5db46 100644
--- a/app/src/main/java/lightcontainer/storage/AppData.java
+++ b/app/src/main/java/lightcontainer/storage/AppData.java
@@ -68,8 +68,6 @@ public class AppData {
     }
 
 
-
-
     /**
      * Use this method when a user signs up.
      *
@@ -98,15 +96,15 @@ public class AppData {
      * True indicates the success of the operation.
      * False indicates the failure of the operation.
      *
-     * @param file The file to add
-     * @param user The user who wants to add the file
+     * @param file     The file to add
+     * @param userName The name of the user who wants to add the file
      * @return True if the user is found and a file with the same name doesn't already exist for this user. False otherwise.
      */
-    public boolean addFileFor(File file, User user) {
-        if (!this.users.containsKey(user.getName())) {
+    public boolean addFileFor(File file, String userName) {
+        if (!this.users.containsKey(userName)) {
             return false;
         } else {
-            this.users.get(user.getName()).addFile(file);
+            this.users.get(userName).addFile(file);
             return true;
         }
     }
@@ -119,28 +117,28 @@ public class AppData {
      * False indicates the failure of the operation.
      *
      * @param fileName The name of the file to delete
-     * @param user     The user who wants to delete the file
+     * @param userName The name of the user who wants to delete the file
      * @return True if the user is found and the file was deleted. False otherwise.
      */
-    public boolean deleteFileOf(String fileName, User user) {
-        if (!this.users.containsKey(user.getName())) {
+    public boolean deleteFileOf(String fileName, String userName) {
+        if (!this.users.containsKey(userName)) {
             return false;
         } else {
-            return this.users.get(user.getName()).deleteFile(fileName);
+            return this.users.get(userName).deleteFile(fileName);
         }
     }
 
     /**
-     * @param user    The user who wants to add a storage for their file
-     * @param file    The file that needs a new storage
-     * @param storage The storage to add
+     * @param userName The name of the user who wants to add a storage for their file
+     * @param file     The file that needs a new storage
+     * @param storage  The storage to add
      * @return True if the storage was added. False otherwise.
      */
-    public boolean addStorage(User user, File file, String storage) {
-        if (!this.users.containsKey(user.getName())) {
+    public boolean addStorage(String userName, File file, String storage) {
+        if (!this.users.containsKey(userName)) {
             return false;
         } else {
-            return this.users.get(user.getName()).addStorage(file, storage);
+            return this.users.get(userName).addStorage(file, storage);
         }
     }
 
diff --git a/app/src/test/java/lightcontainer/storage/RepositoryTests.java b/app/src/test/java/lightcontainer/storage/RepositoryTests.java
index 77913f8..d94a0f7 100644
--- a/app/src/test/java/lightcontainer/storage/RepositoryTests.java
+++ b/app/src/test/java/lightcontainer/storage/RepositoryTests.java
@@ -40,9 +40,8 @@ public class RepositoryTests {
         storage.add("StorBackEnd1");
         File file1 = new File("File1", 15, "8d8d8d8d", storage);
         files.put(file1.getName(), file1);
-        User user1 = new User("User1", "Password", "djdjjdj", files);
         appData.setAppConfig(appConfig);
-        //appData.addUser(user1);
+        appData.addUser("User1", "Password", "djdjjdj");
         JsonAdapter jsonAdapter = new JsonAdapter(appData);
         //WHEN Repository calls save method
         String filePath = "src/test/resources/test.json";