Refactor a bit to avoid two model attributes lookup

Tidy up tests a bit.

lib/devise/models/authenticatable.rb

@@ -172,11 +172,7 @@ module Devise
       end
 
       def apply_to_attribute_or_variable(attr, method)
-        if self[attr]
-          self[attr].try(method)
-        else
-          send(attr).try(method)
-        end
+        (self[attr] || send(attr)).try(method)
       end
 
       module ClassMethods
@@ -207,7 +203,7 @@ module Devise
         # it may be wrapped as well. For instance, database authenticatable
         # provides a `find_for_database_authentication` that wraps a call to
         # this method. This allows you to customize both database authenticatable
-        # or the whole authenticate stack by customize `find_for_authentication.` 
+        # or the whole authenticate stack by customize `find_for_authentication.`
         #
         # Overwrite to add customized conditions, create a join, or maybe use a
         # namedscope to filter records while authenticating.

test/models/database_authenticatable_test.rb

@@ -14,18 +14,18 @@ class DatabaseAuthenticatableTest < ActiveSupport::TestCase
   end
 
   test 'should downcase case insensitive keys that refer to virtual attributes when saving' do
-    email = 'Foo@Bar1.com'
+    email        = 'Foo@Bar1.com'
     confirmation = 'Foo@Bar1.com'
-    pw = '12345678'
-    user = UserWithVirtualAttributes.new(
-      :email => email,
-      :email_confirmation => confirmation,
-      :password => pw,
-      :password_confirmation => pw)
+    attributes   = valid_attributes(:email => email, :email_confirmation => confirmation)
 
-    assert_nothing_raised "ActiveRecord::RecordInvalid" do
+    user = UserWithVirtualAttributes.new(attributes)
+    assert_equal confirmation, user.email_confirmation
+
+    assert_nothing_raised ActiveRecord::RecordInvalid do
       user.save!
     end
+
+    assert_equal confirmation.downcase, user.email_confirmation
   end
 
   test 'should remove whitespace from strip whitespace keys when saving' do

test/support/helpers.rb

@@ -29,10 +29,6 @@ class ActiveSupport::TestCase
       :password_confirmation => '12345678' }.update(attributes)
   end
 
-  def new_user_with_class(klass=User, attributes={})
-    klass.new(valid_attributes(attributes))
-  end
-
   def new_user(attributes={})
     User.new(valid_attributes(attributes))
   end

test/test_models.rb

@@ -25,4 +25,3 @@ end
 
 class Inheritable < Admin
 end
-