Removed space

app/models/user.rb

@@ -11,16 +11,18 @@ class User < ApplicationRecord
   
   has_secure_password
 
+class << self
   # Returns the hash digest of the given string. 
-    def User.digest(string)
+    def digest(string)
       cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST : BCrypt::Engine.cost
       BCrypt::Password.create(string, cost: cost)
     end
 
   # Returns a random token. 
-    def User.new_token
+    def new_token
       SecureRandom.urlsafe_base64
     end
+  end
 
   # Remembers a user in the database for use in persistent sessions
     def remember

test/models/user_test.rb

@@ -15,7 +15,7 @@ class UserTest < ActiveSupport::TestCase
   end
   
   test "email should be present" do
-    @user.email = ""
+    @user.email = "      "
     assert_not @user.valid?
   end
   
@@ -62,7 +62,7 @@ class UserTest < ActiveSupport::TestCase
   end
 
   test "password should be present (nonblank)" do
-    @user.password = @user.password_confirmation = "" * 6
+    @user.password = @user.password_confirmation = " " * 6
     assert_not @user.valid?
   end