use proper keys for local storage test

Author: roninopf

tests/unit-tests/LocalStorageTests.swift

@@ -44,23 +44,23 @@ class LocalStorageTests: XCTestCase {
 
         localStorage.userId = userId
 
-        XCTAssertNil(testUserDefaults.string(forKey: "userId"))
+        XCTAssertNil(testUserDefaults.string(forKey: Const.UserDefault.userIdKey))
 
         XCTAssertEqual(testKeychain.userId, userId)
 
         let email = "[email protected]"
 
         localStorage.email = email
 
-        XCTAssertNil(testUserDefaults.string(forKey: "email"))
+        XCTAssertNil(testUserDefaults.string(forKey: Const.UserDefault.emailKey))
 
         XCTAssertEqual(testKeychain.email, email)
 
         let authToken = "token"
 
         localStorage.authToken = authToken
 
-        XCTAssertNil(testUserDefaults.string(forKey: "authToken"))
+        XCTAssertNil(testUserDefaults.string(forKey: Const.UserDefault.authTokenKey))
 
         XCTAssertEqual(testKeychain.authToken, authToken)
     }