Adding required_fields to all modules

lib/devise/models/authenticatable.rb

@@ -64,6 +64,10 @@ module Devise
         before_validation :strip_whitespace
       end
 
+      def self.required_fields(klass)
+        []
+      end
+
       # Check if the current object is valid for authentication. This method and
       # find_for_authentication are the methods used in a Warden::Strategy to check
       # if a model should be signed in or not.

lib/devise/models/omniauthable.rb

@@ -15,6 +15,10 @@ module Devise
     module Omniauthable
       extend ActiveSupport::Concern
 
+      def self.required_fields(klass)
+        []
+      end
+
       module ClassMethods
         Devise::Models.config(self, :omniauth_providers)
       end

lib/devise/models/registerable.rb

@@ -5,6 +5,10 @@ module Devise
     module Registerable
       extend ActiveSupport::Concern
 
+      def self.required_fields(klass)
+        []
+      end
+
       module ClassMethods
         # A convenience method that receives both parameters and session to
         # initialize a user. This can be used by OAuth, for example, to send

lib/devise/models/timeoutable.rb

@@ -20,6 +20,10 @@ module Devise
     module Timeoutable
       extend ActiveSupport::Concern
 
+      def self.required_fields(klass)
+        []
+      end
+
       # Checks whether the user session has expired based on configured time.
       def timedout?(last_access)
         return false if remember_exists_and_not_expired?

test/models/authenticatable_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class AuthenticatableTest < ActiveSupport::TestCase
+  test 'required_fields should be an empty array' do
+    assert_equal Devise::Models::Validatable.required_fields(User), []
+  end
+end

test/models/omniauthable_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class OmniauthableTest < ActiveSupport::TestCase
+  test 'required_fields should contain the fields that Devise uses' do
+    assert_same_content Devise::Models::Omniauthable.required_fields(User), []
+  end
+end

test/models/registerable_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class RegisterableTest < ActiveSupport::TestCase
+  test 'required_fields should contain the fields that Devise uses' do
+    assert_same_content Devise::Models::Registerable.required_fields(User), []
+  end
+end

test/models/timeoutable_test.rb

@@ -39,4 +39,8 @@ class TimeoutableTest < ActiveSupport::TestCase
       assert user.timedout?(6.minutes.ago)
     end
   end
+
+  test 'required_fields should contain the fields that Devise uses' do
+    assert_same_content Devise::Models::Timeoutable.required_fields(User), []
+  end
 end