From 41edc7f55dec7ae21fe277c1a4ae61205b196efb Mon Sep 17 00:00:00 2001
From: Jeroen van Dijk <jeroen@jeevidee.nl>
Date: Sun, 16 May 2010 22:10:58 +0200
Subject: [PATCH] Make ActiveModel::Errors#add_on_blank and #add_on_empty accept an options hash and make various Validators pass their (filtered) options.

This makes it possible to pass additional options through Validators to message generation. E.g. plugin authors want to add validates_presence_of :foo, :format => "some format".

Also, cleanup the :default vs :message options confusion in ActiveModel validation message generation.

Also, deprecate ActiveModel::Errors#add_on_blank(attributes, custom_message) in favor of ActiveModel::Errors#add_on_blank(attributes, options).

Also, refactoring of ActiveModel and ActiveRecord Validation tests. Test are a lot more DRY now. Better test coverage as well now.

The first four points were reapplied from an older patch of Sven Fuchs which didn't apply cleanly anymore and was not complete yet.
---
 activemodel/lib/active_model/errors.rb             |   52 ++-
 .../lib/active_model/validations/acceptance.rb     |    2 +-
 .../lib/active_model/validations/confirmation.rb   |    2 +-
 .../lib/active_model/validations/exclusion.rb      |    5 +-
 activemodel/lib/active_model/validations/format.rb |    4 +-
 .../lib/active_model/validations/inclusion.rb      |    5 +-
 activemodel/lib/active_model/validations/length.rb |    8 +-
 .../lib/active_model/validations/numericality.rb   |   13 +-
 .../lib/active_model/validations/presence.rb       |    2 +-
 .../i18n_generate_message_validation_test.rb       |   82 ++--
 .../test/cases/validations/i18n_validation_test.rb |  607 +++++++-------------
 .../lib/active_record/validations/associated.rb    |    2 +-
 .../lib/active_record/validations/uniqueness.rb    |    2 +-
 .../i18n_generate_message_validation_test.rb       |   12 +-
 .../test/cases/validations/i18n_validation_test.rb |   50 +-
 15 files changed, 361 insertions(+), 487 deletions(-)

diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index 14afc52..8f0b21c 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -179,25 +179,43 @@ module ActiveModel
     # If +message+ is a Proc, it will be called, allowing for things like Time.now to be used within an error
     def add(attribute, message = nil, options = {})
       message ||= :invalid
-      message = generate_message(attribute, message, options) if message.is_a?(Symbol)
+      
+      validation_conditionals = [:if, :unless, :on]
+      
+      message = generate_message(attribute, message, options.except(*validation_conditionals)) if message.is_a?(Symbol)
+
       message = message.call if message.is_a?(Proc)
       self[attribute] << message
     end
 
     # Will add an error message to each of the attributes in +attributes+ that is empty.
-    def add_on_empty(attributes, custom_message = nil)
+    def add_on_empty(attributes, options = {})
+      if options && !options.is_a?(Hash)
+        options = { :message => options }
+        ActiveSupport::Deprecation.warn \
+          "ActiveModel::Errors#add_on_empty(attributes, custom_message) has been deprecated.\n" +
+          "Instead of passing a custom_message pass an options Hash { :message => custom_message }."
+      end
+
       [attributes].flatten.each do |attribute|
         value = @base.send(:read_attribute_for_validation, attribute)
         is_empty = value.respond_to?(:empty?) ? value.empty? : false
-        add(attribute, :empty, :default => custom_message) unless !value.nil? && !is_empty
+        add(attribute, :empty, options) if value.nil? || is_empty
       end
     end
 
     # Will add an error message to each of the attributes in +attributes+ that is blank (using Object#blank?).
-    def add_on_blank(attributes, custom_message = nil)
+    def add_on_blank(attributes, options = {})
+      if options && !options.is_a?(Hash)
+        options = { :message => options }
+        ActiveSupport::Deprecation.warn \
+          "ActiveModel::Errors#add_on_blank(attributes, custom_message) has been deprecated.\n" +
+          "Instead of passing a custom_message pass an options Hash { :message => custom_message }."
+      end
+
       [attributes].flatten.each do |attribute|
         value = @base.send(:read_attribute_for_validation, attribute)
-        add(attribute, :blank, :default => custom_message) if value.blank?
+        add(attribute, :blank, options) if value.blank?
       end
     end
 
@@ -254,18 +272,26 @@ module ActiveModel
     # <li><tt>errors.attributes.title.blank</tt></li>
     # <li><tt>errors.messages.blank</tt></li>
     # </ol>
-    def generate_message(attribute, message = :invalid, options = {})
-      message, options[:default] = options[:default], message if options[:default].is_a?(Symbol)
+    
+    def generate_message(attribute, type = :invalid, options = {})
+      type = options.delete(:message) if options[:message].is_a?(Symbol)
+      
+      if options[:default]
+        ActiveSupport::Deprecation.warn \
+          "ActiveModel::Errors#generate_message(attributes, custom_message) has been deprecated.\n" +
+          "Use ActiveModel::Errors#generate_message(attributes, :message => 'your message') instead."
+        options[:message] = options.delete(:default)
+      end
 
       defaults = @base.class.lookup_ancestors.map do |klass|
-        [ :"#{@base.class.i18n_scope}.errors.models.#{klass.model_name.underscore}.attributes.#{attribute}.#{message}",
-          :"#{@base.class.i18n_scope}.errors.models.#{klass.model_name.underscore}.#{message}" ]
+        [ :"#{@base.class.i18n_scope}.errors.models.#{klass.model_name.underscore}.attributes.#{attribute}.#{type}",
+          :"#{@base.class.i18n_scope}.errors.models.#{klass.model_name.underscore}.#{type}" ]
       end
 
-      defaults << options.delete(:default)
-      defaults << :"#{@base.class.i18n_scope}.errors.messages.#{message}"
-      defaults << :"errors.attributes.#{attribute}.#{message}"
-      defaults << :"errors.messages.#{message}"
+      defaults << options.delete(:message)
+      defaults << :"#{@base.class.i18n_scope}.errors.messages.#{type}"
+      defaults << :"errors.attributes.#{attribute}.#{type}"
+      defaults << :"errors.messages.#{type}"
 
       defaults.compact!
       defaults.flatten!
diff --git a/activemodel/lib/active_model/validations/acceptance.rb b/activemodel/lib/active_model/validations/acceptance.rb
index 26b12b5..0d6572a 100644
--- a/activemodel/lib/active_model/validations/acceptance.rb
+++ b/activemodel/lib/active_model/validations/acceptance.rb
@@ -7,7 +7,7 @@ module ActiveModel
 
       def validate_each(record, attribute, value)
         unless value == options[:accept]
-          record.errors.add(attribute, :accepted, :default => options[:message])
+          record.errors.add(attribute, :accepted, options.except(:accept, :allow_nil))
         end
       end
       
diff --git a/activemodel/lib/active_model/validations/confirmation.rb b/activemodel/lib/active_model/validations/confirmation.rb
index 5144534..66bce0d 100644
--- a/activemodel/lib/active_model/validations/confirmation.rb
+++ b/activemodel/lib/active_model/validations/confirmation.rb
@@ -4,7 +4,7 @@ module ActiveModel
       def validate_each(record, attribute, value)
         confirmed = record.send(:"#{attribute}_confirmation")
         return if confirmed.nil? || value == confirmed
-        record.errors.add(attribute, :confirmation, :default => options[:message])
+        record.errors.add(attribute, :confirmation, options)
       end
       
       def setup(klass)
diff --git a/activemodel/lib/active_model/validations/exclusion.rb b/activemodel/lib/active_model/validations/exclusion.rb
index 2ee78f5..acc35d5 100644
--- a/activemodel/lib/active_model/validations/exclusion.rb
+++ b/activemodel/lib/active_model/validations/exclusion.rb
@@ -7,8 +7,9 @@ module ActiveModel
       end
 
       def validate_each(record, attribute, value)
-        return unless options[:in].include?(value)
-        record.errors.add(attribute, :exclusion, :default => options[:message], :value => value)
+        if options[:in].include?(value)
+          record.errors.add(attribute, :exclusion, options.except(:in).merge(:value => value))
+        end
       end
     end
 
diff --git a/activemodel/lib/active_model/validations/format.rb b/activemodel/lib/active_model/validations/format.rb
index c34c860..99c228f 100644
--- a/activemodel/lib/active_model/validations/format.rb
+++ b/activemodel/lib/active_model/validations/format.rb
@@ -3,9 +3,9 @@ module ActiveModel
     class FormatValidator < EachValidator
       def validate_each(record, attribute, value)
         if options[:with] && value.to_s !~ options[:with]
-          record.errors.add(attribute, :invalid, :default => options[:message], :value => value)
+          record.errors.add(attribute, :invalid, options.except(:with).merge(:value => value))
         elsif options[:without] && value.to_s =~ options[:without]
-          record.errors.add(attribute, :invalid, :default => options[:message], :value => value)
+          record.errors.add(attribute, :invalid, options.except(:with).merge(:value => value))
         end
       end
       
diff --git a/activemodel/lib/active_model/validations/inclusion.rb b/activemodel/lib/active_model/validations/inclusion.rb
index 446646d..7dafb7e 100644
--- a/activemodel/lib/active_model/validations/inclusion.rb
+++ b/activemodel/lib/active_model/validations/inclusion.rb
@@ -7,8 +7,9 @@ module ActiveModel
       end
 
       def validate_each(record, attribute, value)
-        return if options[:in].include?(value)
-        record.errors.add(attribute, :inclusion, :default => options[:message], :value => value)
+        unless options[:in].include?(value)
+          record.errors.add(attribute, :inclusion, options.except(:in).merge(:value => value))
+        end
       end
     end
 
diff --git a/activemodel/lib/active_model/validations/length.rb b/activemodel/lib/active_model/validations/length.rb
index d7218f4..b25fc6f 100644
--- a/activemodel/lib/active_model/validations/length.rb
+++ b/activemodel/lib/active_model/validations/length.rb
@@ -37,7 +37,8 @@ module ActiveModel
 
         CHECKS.each do |key, validity_check|
           next unless check_value = options[key]
-          custom_message = options[:message] || options[MESSAGES[key]]
+          default_message = options[MESSAGES[key]]
+          options[:message] ||= default_message if default_message
 
           valid_value = if key == :maximum
             value.nil? || value.size.send(validity_check, check_value)
@@ -46,7 +47,10 @@ module ActiveModel
           end
 
           next if valid_value
-          record.errors.add(attribute, MESSAGES[key], :default => custom_message, :count => check_value)
+          
+          reserved_options = [:minimum, :maximum, :within, :is, :tokenizer, :too_short, :too_long]
+          record.errors.add(attribute, MESSAGES[key], 
+                            options.except(*reserved_options).merge(:count => check_value))
         end
       end
     end
diff --git a/activemodel/lib/active_model/validations/numericality.rb b/activemodel/lib/active_model/validations/numericality.rb
index 716010e..25abbbe 100644
--- a/activemodel/lib/active_model/validations/numericality.rb
+++ b/activemodel/lib/active_model/validations/numericality.rb
@@ -26,13 +26,13 @@ module ActiveModel
         return if options[:allow_nil] && raw_value.nil?
 
         unless value = parse_raw_value_as_a_number(raw_value)
-          record.errors.add(attr_name, :not_a_number, :value => raw_value, :default => options[:message])
+          record.errors.add(attr_name, :not_a_number, filtered_options(raw_value))
           return
         end
 
         if options[:only_integer]
           unless value = parse_raw_value_as_an_integer(raw_value)
-            record.errors.add(attr_name, :not_an_integer, :value => raw_value, :default => options[:message])
+            record.errors.add(attr_name, :not_an_integer, filtered_options(raw_value))
             return
           end
         end
@@ -41,14 +41,14 @@ module ActiveModel
           case option
           when :odd, :even
             unless value.to_i.send(CHECKS[option])
-              record.errors.add(attr_name, option, :value => value, :default => options[:message])
+              record.errors.add(attr_name, option, filtered_options(value))
             end
           else
             option_value = option_value.call(record) if option_value.is_a?(Proc)
             option_value = record.send(option_value) if option_value.is_a?(Symbol)
 
             unless value.send(CHECKS[option], option_value)
-              record.errors.add(attr_name, option, :default => options[:message], :value => value, :count => option_value)
+              record.errors.add(attr_name, option, filtered_options(value).merge(:count => option_value))
             end
           end
         end
@@ -67,6 +67,11 @@ module ActiveModel
       def parse_raw_value_as_an_integer(raw_value)
         raw_value.to_i if raw_value.to_s =~ /\A[+-]?\d+\Z/
       end
+      
+      def filtered_options(value)
+        reserved_options = [:allow_nil, :odd, :even, :not_an_integer, :only_integer, :allow_nil, :less_than]
+        options.except(*reserved_options).merge(:value => value)
+      end
 
     end
 
diff --git a/activemodel/lib/active_model/validations/presence.rb b/activemodel/lib/active_model/validations/presence.rb
index b319f48..2826a10 100644
--- a/activemodel/lib/active_model/validations/presence.rb
+++ b/activemodel/lib/active_model/validations/presence.rb
@@ -4,7 +4,7 @@ module ActiveModel
   module Validations
     class PresenceValidator < EachValidator
       def validate(record)
-        record.errors.add_on_blank(attributes, options[:message])
+        record.errors.add_on_blank(attributes, options)
       end
     end
 
diff --git a/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb b/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
index 58a8d17..0679e67 100644
--- a/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
+++ b/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -8,131 +8,131 @@ class I18nGenerateMessageValidationTest < ActiveModel::TestCase
     @person = Person.new
   end
 
-  # validates_inclusion_of: generate_message(attr_name, :inclusion, :default => configuration[:message], :value => value)
+  # validates_inclusion_of: generate_message(attr_name, :inclusion, :message => custom_message, :value => value)
   def test_generate_message_inclusion_with_default_message
-    assert_equal 'is not included in the list', @person.errors.generate_message(:title, :inclusion, :default => nil, :value => 'title')
+    assert_equal 'is not included in the list', @person.errors.generate_message(:title, :inclusion, :value => 'title')
   end
 
   def test_generate_message_inclusion_with_custom_message
-    assert_equal 'custom message title', @person.errors.generate_message(:title, :inclusion, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @person.errors.generate_message(:title, :inclusion, :message => 'custom message %{value}', :value => 'title')
   end
 
-  # validates_exclusion_of: generate_message(attr_name, :exclusion, :default => configuration[:message], :value => value)
+  # validates_exclusion_of: generate_message(attr_name, :exclusion, :message => custom_message, :value => value)
   def test_generate_message_exclusion_with_default_message
-    assert_equal 'is reserved', @person.errors.generate_message(:title, :exclusion, :default => nil, :value => 'title')
+    assert_equal 'is reserved', @person.errors.generate_message(:title, :exclusion, :value => 'title')
   end
 
   def test_generate_message_exclusion_with_custom_message
-    assert_equal 'custom message title', @person.errors.generate_message(:title, :exclusion, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @person.errors.generate_message(:title, :exclusion, :message => 'custom message %{value}', :value => 'title')
   end
 
-  # validates_format_of:  generate_message(attr_name, :invalid, :default => configuration[:message], :value => value)
+  # validates_format_of:  generate_message(attr_name, :invalid, :message => custom_message, :value => value)
   def test_generate_message_invalid_with_default_message
-    assert_equal 'is invalid', @person.errors.generate_message(:title, :invalid, :default => nil, :value => 'title')
+    assert_equal 'is invalid', @person.errors.generate_message(:title, :invalid, :value => 'title')
   end
 
   def test_generate_message_invalid_with_custom_message
-    assert_equal 'custom message title', @person.errors.generate_message(:title, :invalid, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @person.errors.generate_message(:title, :invalid, :message => 'custom message %{value}', :value => 'title')
   end
 
-  # validates_confirmation_of: generate_message(attr_name, :confirmation, :default => configuration[:message])
+  # validates_confirmation_of: generate_message(attr_name, :confirmation, :message => custom_message)
   def test_generate_message_confirmation_with_default_message
-    assert_equal "doesn't match confirmation", @person.errors.generate_message(:title, :confirmation, :default => nil)
+    assert_equal "doesn't match confirmation", @person.errors.generate_message(:title, :confirmation)
   end
 
   def test_generate_message_confirmation_with_custom_message
-    assert_equal 'custom message', @person.errors.generate_message(:title, :confirmation, :default => 'custom message')
+    assert_equal 'custom message', @person.errors.generate_message(:title, :confirmation, :message => 'custom message')
   end
 
-  # validates_acceptance_of: generate_message(attr_name, :accepted, :default => configuration[:message])
+  # validates_acceptance_of: generate_message(attr_name, :accepted, :message => custom_message)
   def test_generate_message_accepted_with_default_message
-    assert_equal "must be accepted", @person.errors.generate_message(:title, :accepted, :default => nil)
+    assert_equal "must be accepted", @person.errors.generate_message(:title, :accepted)
   end
 
   def test_generate_message_accepted_with_custom_message
-    assert_equal 'custom message', @person.errors.generate_message(:title, :accepted, :default => 'custom message')
+    assert_equal 'custom message', @person.errors.generate_message(:title, :accepted, :message => 'custom message')
   end
 
-  # add_on_empty: generate_message(attr, :empty, :default => custom_message)
+  # add_on_empty: generate_message(attr, :empty, :message => custom_message)
   def test_generate_message_empty_with_default_message
-    assert_equal "can't be empty", @person.errors.generate_message(:title, :empty, :default => nil)
+    assert_equal "can't be empty", @person.errors.generate_message(:title, :empty)
   end
 
   def test_generate_message_empty_with_custom_message
-    assert_equal 'custom message', @person.errors.generate_message(:title, :empty, :default => 'custom message')
+    assert_equal 'custom message', @person.errors.generate_message(:title, :empty, :message => 'custom message')
   end
 
-  # add_on_blank: generate_message(attr, :blank, :default => custom_message)
+  # add_on_blank: generate_message(attr, :blank, :message => custom_message)
   def test_generate_message_blank_with_default_message
-    assert_equal "can't be blank", @person.errors.generate_message(:title, :blank, :default => nil)
+    assert_equal "can't be blank", @person.errors.generate_message(:title, :blank)
   end
 
   def test_generate_message_blank_with_custom_message
-    assert_equal 'custom message', @person.errors.generate_message(:title, :blank, :default => 'custom message')
+    assert_equal 'custom message', @person.errors.generate_message(:title, :blank, :message => 'custom message')
   end
 
-  # validates_length_of: generate_message(attr, :too_long, :default => options[:too_long], :count => option_value.end)
+  # validates_length_of: generate_message(attr, :too_long, :message => custom_message, :count => option_value.end)
   def test_generate_message_too_long_with_default_message
-    assert_equal "is too long (maximum is 10 characters)", @person.errors.generate_message(:title, :too_long, :default => nil, :count => 10)
+    assert_equal "is too long (maximum is 10 characters)", @person.errors.generate_message(:title, :too_long, :count => 10)
   end
 
   def test_generate_message_too_long_with_custom_message
-    assert_equal 'custom message 10', @person.errors.generate_message(:title, :too_long, :default => 'custom message %{count}', :count => 10)
+    assert_equal 'custom message 10', @person.errors.generate_message(:title, :too_long, :message => 'custom message %{count}', :count => 10)
   end
 
-  # validates_length_of: generate_message(attr, :too_short, :default => options[:too_short], :count => option_value.begin)
+  # validates_length_of: generate_message(attr, :too_short, :default => custom_message, :count => option_value.begin)
   def test_generate_message_too_short_with_default_message
-    assert_equal "is too short (minimum is 10 characters)", @person.errors.generate_message(:title, :too_short, :default => nil, :count => 10)
+    assert_equal "is too short (minimum is 10 characters)", @person.errors.generate_message(:title, :too_short, :count => 10)
   end
 
   def test_generate_message_too_short_with_custom_message
-    assert_equal 'custom message 10', @person.errors.generate_message(:title, :too_short, :default => 'custom message %{count}', :count => 10)
+    assert_equal 'custom message 10', @person.errors.generate_message(:title, :too_short, :message => 'custom message %{count}', :count => 10)
   end
 
-  # validates_length_of: generate_message(attr, key, :default => custom_message, :count => option_value)
+  # validates_length_of: generate_message(attr, :wrong_length, :message => custom_message, :count => option_value)
   def test_generate_message_wrong_length_with_default_message
-    assert_equal "is the wrong length (should be 10 characters)", @person.errors.generate_message(:title, :wrong_length, :default => nil, :count => 10)
+    assert_equal "is the wrong length (should be 10 characters)", @person.errors.generate_message(:title, :wrong_length, :count => 10)
   end
 
   def test_generate_message_wrong_length_with_custom_message
-    assert_equal 'custom message 10', @person.errors.generate_message(:title, :wrong_length, :default => 'custom message %{count}', :count => 10)
+    assert_equal 'custom message 10', @person.errors.generate_message(:title, :wrong_length, :message => 'custom message %{count}', :count => 10)
   end
 
-  # validates_numericality_of: generate_message(attr_name, :not_a_number, :value => raw_value, :default => configuration[:message])
+  # validates_numericality_of: generate_message(attr_name, :not_a_number, :value => raw_value, :message => custom_message)
   def test_generate_message_not_a_number_with_default_message
-    assert_equal "is not a number", @person.errors.generate_message(:title, :not_a_number, :default => nil, :value => 'title')
+    assert_equal "is not a number", @person.errors.generate_message(:title, :not_a_number, :value => 'title')
   end
 
   def test_generate_message_not_a_number_with_custom_message
-    assert_equal 'custom message title', @person.errors.generate_message(:title, :not_a_number, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @person.errors.generate_message(:title, :not_a_number, :message => 'custom message %{value}', :value => 'title')
   end
 
-  # validates_numericality_of: generate_message(attr_name, option, :value => raw_value, :default => configuration[:message])
+  # validates_numericality_of: generate_message(attr_name, option, :value => raw_value, :default => custom_message)
   def test_generate_message_greater_than_with_default_message
-    assert_equal "must be greater than 10", @person.errors.generate_message(:title, :greater_than, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be greater than 10", @person.errors.generate_message(:title, :greater_than, :value => 'title', :count => 10)
   end
 
   def test_generate_message_greater_than_or_equal_to_with_default_message
-    assert_equal "must be greater than or equal to 10", @person.errors.generate_message(:title, :greater_than_or_equal_to, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be greater than or equal to 10", @person.errors.generate_message(:title, :greater_than_or_equal_to, :value => 'title', :count => 10)
   end
 
   def test_generate_message_equal_to_with_default_message
-    assert_equal "must be equal to 10", @person.errors.generate_message(:title, :equal_to, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be equal to 10", @person.errors.generate_message(:title, :equal_to, :value => 'title', :count => 10)
   end
 
   def test_generate_message_less_than_with_default_message
-    assert_equal "must be less than 10", @person.errors.generate_message(:title, :less_than, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be less than 10", @person.errors.generate_message(:title, :less_than, :value => 'title', :count => 10)
   end
 
   def test_generate_message_less_than_or_equal_to_with_default_message
-    assert_equal "must be less than or equal to 10", @person.errors.generate_message(:title, :less_than_or_equal_to, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be less than or equal to 10", @person.errors.generate_message(:title, :less_than_or_equal_to, :value => 'title', :count => 10)
   end
 
   def test_generate_message_odd_with_default_message
-    assert_equal "must be odd", @person.errors.generate_message(:title, :odd, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be odd", @person.errors.generate_message(:title, :odd, :value => 'title', :count => 10)
   end
 
   def test_generate_message_even_with_default_message
-    assert_equal "must be even", @person.errors.generate_message(:title, :even, :default => nil, :value => 'title', :count => 10)
+    assert_equal "must be even", @person.errors.generate_message(:title, :even, :value => 'title', :count => 10)
   end
 end
diff --git a/activemodel/test/cases/validations/i18n_validation_test.rb b/activemodel/test/cases/validations/i18n_validation_test.rb
index 547d80f..8b1d6e0 100644
--- a/activemodel/test/cases/validations/i18n_validation_test.rb
+++ b/activemodel/test/cases/validations/i18n_validation_test.rb
@@ -22,23 +22,23 @@ class I18nValidationTest < ActiveModel::TestCase
   end
 
   def test_errors_add_on_empty_generates_message
-    @person.errors.expects(:generate_message).with(:title, :empty, {:default => nil})
+    @person.errors.expects(:generate_message).with(:title, :empty, {})
     @person.errors.add_on_empty :title
   end
 
   def test_errors_add_on_empty_generates_message_with_custom_default_message
-    @person.errors.expects(:generate_message).with(:title, :empty, {:default => 'custom'})
-    @person.errors.add_on_empty :title, 'custom'
+    @person.errors.expects(:generate_message).with(:title, :empty, {:message => 'custom'})
+    @person.errors.add_on_empty :title, :message => 'custom'
   end
 
   def test_errors_add_on_blank_generates_message
-    @person.errors.expects(:generate_message).with(:title, :blank, {:default => nil})
+    @person.errors.expects(:generate_message).with(:title, :blank, {})
     @person.errors.add_on_blank :title
   end
 
   def test_errors_add_on_blank_generates_message_with_custom_default_message
-    @person.errors.expects(:generate_message).with(:title, :blank, {:default => 'custom'})
-    @person.errors.add_on_blank :title, 'custom'
+    @person.errors.expects(:generate_message).with(:title, :blank, {:message => 'custom'})
+    @person.errors.add_on_blank :title, :message => 'custom'
   end
 
   def test_full_message_encoding
@@ -62,441 +62,272 @@ class I18nValidationTest < ActiveModel::TestCase
   end
 
   # ActiveModel::Validations
+  
+  # A set of common cases for ActiveModel::Validations message generation that
+  # are used to generate tests to keep things DRY
+  # 
+  COMMON_CASES = [
+  # [ case,                                validation_options,            generate_message_options]
+    [ "given no options",                  {},                            {}],
+    [ "given custom message",              {:message => "custom"},        {:message => "custom"}],
+    [ "given if condition",                {:if     => lambda { true }},  {}],
+    [ "given unless condition",            {:unless => lambda { false }}, {}],
+    [ "given option that is not reserved", {:format => "jpg"},            {:format => "jpg" }]
+  ]
+  
   # validates_confirmation_of w/ mocha
-  def test_validates_confirmation_of_generates_message
-    Person.validates_confirmation_of :title
-    @person.title_confirmation = 'foo'
-    @person.errors.expects(:generate_message).with(:title, :confirmation, {:default => nil})
-    @person.valid?
-  end
-
-  def test_validates_confirmation_of_generates_message_with_custom_default_message
-    Person.validates_confirmation_of :title, :message => 'custom'
-    @person.title_confirmation = 'foo'
-    @person.errors.expects(:generate_message).with(:title, :confirmation, {:default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_confirmation_of on generated message #{name}" do
+      Person.validates_confirmation_of :title, validation_options
+      @person.title_confirmation = 'foo'
+      @person.errors.expects(:generate_message).with(:title, :confirmation, generate_message_options)
+      @person.valid?
+    end
+  end
+  
   # validates_acceptance_of w/ mocha
-
-  def test_validates_acceptance_of_generates_message
-    Person.validates_acceptance_of :title, :allow_nil => false
-    @person.errors.expects(:generate_message).with(:title, :accepted, {:default => nil})
-    @person.valid?
-  end
-
-  def test_validates_acceptance_of_generates_message_with_custom_default_message
-    Person.validates_acceptance_of :title, :message => 'custom', :allow_nil => false
-    @person.errors.expects(:generate_message).with(:title, :accepted, {:default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_acceptance_of on generated message #{name}" do
+      Person.validates_acceptance_of :title, validation_options.merge(:allow_nil => false)
+      @person.errors.expects(:generate_message).with(:title, :accepted, generate_message_options)
+      @person.valid?
+    end
+  end
+  
   # validates_presence_of w/ mocha
-
-  def test_validates_presence_of_generates_message
-    Person.validates_presence_of :title
-    @person.errors.expects(:generate_message).with(:title, :blank, {:default => nil})
-    @person.valid?
-  end
-
-  def test_validates_presence_of_generates_message_with_custom_default_message
-    Person.validates_presence_of :title, :message => 'custom'
-    @person.errors.expects(:generate_message).with(:title, :blank, {:default => 'custom'})
-    @person.valid?
-  end
-
-  # validates_length_of :within w/ mocha
-
-  def test_validates_length_of_within_generates_message_with_title_too_short
-    Person.validates_length_of :title, :within => 3..5
-    @person.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_length_of_within_generates_message_with_title_too_short_and_custom_default_message
-    Person.validates_length_of :title, :within => 3..5, :too_short => 'custom'
-    @person.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => 'custom'})
-    @person.valid?
-  end
-
-  def test_validates_length_of_within_generates_message_with_title_too_long
-    Person.validates_length_of :title, :within => 3..5
-    @person.title = 'this title is too long'
-    @person.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_length_of_within_generates_message_with_title_too_long_and_custom_default_message
-    Person.validates_length_of :title, :within => 3..5, :too_long => 'custom'
-    @person.title = 'this title is too long'
-    @person.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_presence_of on generated message #{name}" do
+      Person.validates_presence_of :title, validation_options
+      @person.errors.expects(:generate_message).with(:title, :blank, generate_message_options)
+      @person.valid?
+    end
+  end
+  
+  # validates_length_of :within too short w/ mocha
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_length_of for :withing on generated message when too short #{name}" do
+      Person.validates_length_of :title, validation_options.merge(:within => 3..5)
+      @person.errors.expects(:generate_message).with(:title, :too_short, generate_message_options.merge(:count => 3))
+      @person.valid?
+    end
+  end
+  
+  # validates_length_of :within too long w/ mocha
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_length_of for :too_long generated message #{name}" do
+      Person.validates_length_of :title, validation_options.merge(:within => 3..5)
+      @person.title = 'this title is too long'
+      @person.errors.expects(:generate_message).with(:title, :too_long, generate_message_options.merge(:count => 5))
+      @person.valid?    
+    end
+  end
+  
   # validates_length_of :is w/ mocha
-
-  def test_validates_length_of_is_generates_message
-    Person.validates_length_of :title, :is => 5
-    @person.errors.expects(:generate_message).with(:title, :wrong_length, {:count => 5, :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_length_of_is_generates_message_with_custom_default_message
-    Person.validates_length_of :title, :is => 5, :message => 'custom'
-    @person.errors.expects(:generate_message).with(:title, :wrong_length, {:count => 5, :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_length_of for :is on generated message #{name}" do
+      Person.validates_length_of :title, validation_options.merge(:is => 5)
+      @person.errors.expects(:generate_message).with(:title, :wrong_length, generate_message_options.merge(:count => 5))
+      @person.valid?
+    end
+  end
+  
   # validates_format_of w/ mocha
-
-  def test_validates_format_of_generates_message
-    Person.validates_format_of :title, :with => /^[1-9][0-9]*$/
-    @person.title = '72x'
-    @person.errors.expects(:generate_message).with(:title, :invalid, {:value => '72x', :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_format_of_generates_message_with_custom_default_message
-    Person.validates_format_of :title, :with => /^[1-9][0-9]*$/, :message => 'custom'
-    @person.title = '72x'
-    @person.errors.expects(:generate_message).with(:title, :invalid, {:value => '72x', :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_format_of on generated message #{name}" do
+      Person.validates_format_of :title, validation_options.merge(:with => /^[1-9][0-9]*$/)
+      @person.title = '72x'
+      @person.errors.expects(:generate_message).with(:title, :invalid, generate_message_options.merge(:value => '72x'))
+      @person.valid?
+    end
+  end
+  
   # validates_inclusion_of w/ mocha
-
-  def test_validates_inclusion_of_generates_message
-    Person.validates_inclusion_of :title, :in => %w(a b c)
-    @person.title = 'z'
-    @person.errors.expects(:generate_message).with(:title, :inclusion, {:value => 'z', :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_inclusion_of_generates_message_with_custom_default_message
-    Person.validates_inclusion_of :title, :in => %w(a b c), :message => 'custom'
-    @person.title = 'z'
-    @person.errors.expects(:generate_message).with(:title, :inclusion, {:value => 'z', :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_inclusion_of on generated message #{name}" do
+      Person.validates_inclusion_of :title, validation_options.merge(:in => %w(a b c))
+      @person.title = 'z'
+      @person.errors.expects(:generate_message).with(:title, :inclusion, generate_message_options.merge(:value => 'z'))
+      @person.valid?
+    end
+  end
+  
   # validates_exclusion_of w/ mocha
-
-  def test_validates_exclusion_of_generates_message
-    Person.validates_exclusion_of :title, :in => %w(a b c)
-    @person.title = 'a'
-    @person.errors.expects(:generate_message).with(:title, :exclusion, {:value => 'a', :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_exclusion_of_generates_message_with_custom_default_message
-    Person.validates_exclusion_of :title, :in => %w(a b c), :message => 'custom'
-    @person.title = 'a'
-    @person.errors.expects(:generate_message).with(:title, :exclusion, {:value => 'a', :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_exclusion_of generated message #{name}" do
+      Person.validates_exclusion_of :title, validation_options.merge(:in => %w(a b c))
+      @person.title = 'a'
+      @person.errors.expects(:generate_message).with(:title, :exclusion, generate_message_options.merge(:value => 'a'))
+      @person.valid?
+    end
+  end
+  
   # validates_numericality_of without :only_integer w/ mocha
-
-  def test_validates_numericality_of_generates_message
-    Person.validates_numericality_of :title
-    @person.title = 'a'
-    @person.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_numericality_of_generates_message_with_custom_default_message
-    Person.validates_numericality_of :title, :message => 'custom'
-    @person.title = 'a'
-    @person.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_numericality_of generated message #{name}" do
+      Person.validates_numericality_of :title, validation_options
+      @person.title = 'a'
+      @person.errors.expects(:generate_message).with(:title, :not_a_number, generate_message_options.merge(:value => 'a'))
+      @person.valid?
+    end
+  end
+  
   # validates_numericality_of with :only_integer w/ mocha
-
-  def test_validates_numericality_of_only_integer_generates_message
-    Person.validates_numericality_of :title, :only_integer => true
-    @person.title = '0.0'
-    @person.errors.expects(:generate_message).with(:title, :not_an_integer, {:value => '0.0', :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_numericality_of_only_integer_generates_message_with_custom_default_message
-    Person.validates_numericality_of :title, :only_integer => true, :message => 'custom'
-    @person.title = '0.0'
-    @person.errors.expects(:generate_message).with(:title, :not_an_integer, {:value => '0.0', :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_numericality_of for :only_integer on generated message #{name}" do
+      Person.validates_numericality_of :title, validation_options.merge(:only_integer => true)
+      @person.title = '0.0'
+      @person.errors.expects(:generate_message).with(:title, :not_an_integer, generate_message_options.merge(:value => '0.0'))
+      @person.valid?
+    end
+  end
+  
   # validates_numericality_of :odd w/ mocha
-
-  def test_validates_numericality_of_odd_generates_message
-    Person.validates_numericality_of :title, :only_integer => true, :odd => true
-    @person.title = 0
-    @person.errors.expects(:generate_message).with(:title, :odd, {:value => 0, :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_numericality_of_odd_generates_message_with_custom_default_message
-    Person.validates_numericality_of :title, :only_integer => true, :odd => true, :message => 'custom'
-    @person.title = 0
-    @person.errors.expects(:generate_message).with(:title, :odd, {:value => 0, :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_numericality_of for :odd on generated message #{name}" do
+      Person.validates_numericality_of :title, validation_options.merge(:only_integer => true, :odd => true)
+      @person.title = 0
+      @person.errors.expects(:generate_message).with(:title, :odd, generate_message_options.merge(:value => 0))
+      @person.valid?
+    end
+  end
+  
   # validates_numericality_of :less_than w/ mocha
-
-  def test_validates_numericality_of_less_than_generates_message
-    Person.validates_numericality_of :title, :only_integer => true, :less_than => 0
-    @person.title = 1
-    @person.errors.expects(:generate_message).with(:title, :less_than, {:value => 1, :count => 0, :default => nil})
-    @person.valid?
-  end
-
-  def test_validates_numericality_of_less_than_odd_generates_message_with_custom_default_message
-    Person.validates_numericality_of :title, :only_integer => true, :less_than => 0, :message => 'custom'
-    @person.title = 1
-    @person.errors.expects(:generate_message).with(:title, :less_than, {:value => 1, :count => 0, :default => 'custom'})
-    @person.valid?
-  end
-
+  
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_numericality_of for :less_than on generated message #{name}" do
+      Person.validates_numericality_of :title, validation_options.merge(:only_integer => true, :less_than => 0)
+      @person.title = 1
+      @person.errors.expects(:generate_message).with(:title, :less_than, generate_message_options.merge(:value => 1, :count => 0))
+      @person.valid?
+    end
+  end
+
+
+  # To make things DRY this macro is defined to define 3 tests for every validation case.
+  def self.set_expectations_for_validation(validation, error_type, &block_that_sets_validation)
+    # test "validates_confirmation_of finds custom model key translation when blank"
+    test "#{validation} finds custom model key translation when #{error_type}" do
+      I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {error_type => 'custom message'}}}}}}
+      I18n.backend.store_translations 'en', :errors => {:messages => {error_type => 'global message'}}
+
+      yield(@person, {})
+      @person.valid?
+      assert_equal ['custom message'], @person.errors[:title]
+    end
+
+    # test "validates_confirmation_of finds custom model key translation with interpolation when blank"
+    test "#{validation} finds custom model key translation with interpolation when #{error_type}" do
+      I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {error_type => 'custom message with %{extra}'}}}}}}
+      I18n.backend.store_translations 'en', :errors => {:messages => {error_type => 'global message'}}
+      
+      yield(@person, {:extra => "extra information"})
+      @person.valid?
+      assert_equal ['custom message with extra information'], @person.errors[:title]
+    end
+    
+    # test "validates_confirmation_of finds global default key translation when blank"
+    test "#{validation} finds global default key translation when #{error_type}" do
+      I18n.backend.store_translations 'en', :errors => {:messages => {error_type => 'global message'}}
+
+      yield(@person, {})
+      @person.valid?
+      assert_equal ['global message'], @person.errors[:title]
+    end
+  end
+  
   # validates_confirmation_of w/o mocha
-
-  def test_validates_confirmation_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:confirmation => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:confirmation => 'global message'}}
-
-    Person.validates_confirmation_of :title
-    @person.title_confirmation = 'foo'
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
+  
+  set_expectations_for_validation "validates_confirmation_of", :confirmation do |person, options_to_merge|
+    Person.validates_confirmation_of :title, options_to_merge
+    person.title_confirmation = 'foo'
   end
-
-  def test_validates_confirmation_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:confirmation => 'global message'}}
-
-    Person.validates_confirmation_of :title
-    @person.title_confirmation = 'foo'
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
-  end
-
+  
   # validates_acceptance_of w/o mocha
 
-  def test_validates_acceptance_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:accepted => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:accepted => 'global message'}}
-
-    Person.validates_acceptance_of :title, :allow_nil => false
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_acceptance_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:accepted => 'global message'}}
-
-    Person.validates_acceptance_of :title, :allow_nil => false
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_acceptance_of", :accepted do |person, options_to_merge|
+    Person.validates_acceptance_of :title, options_to_merge.merge(:allow_nil => false)
   end
 
   # validates_presence_of w/o mocha
 
-  def test_validates_presence_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:blank => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:blank => 'global message'}}
-
-    Person.validates_presence_of :title
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_presence_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:blank => 'global message'}}
-
-    Person.validates_presence_of :title
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_presence_of", :blank do |person, options_to_merge|
+    Person.validates_presence_of :title, options_to_merge
   end
 
   # validates_length_of :within w/o mocha
-
-  def test_validates_length_of_within_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:too_short => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:too_short => 'global message'}}
-
-    Person.validates_length_of :title, :within => 3..5
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
+  
+  set_expectations_for_validation "validates_length_of", :too_short do |person, options_to_merge|
+    Person.validates_length_of :title, options_to_merge.merge(:within => 3..5)
   end
-
-  def test_validates_length_of_within_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:too_short => 'global message'}}
-
-    Person.validates_length_of :title, :within => 3..5
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  
+  set_expectations_for_validation "validates_length_of", :too_long do |person, options_to_merge|
+    Person.validates_length_of :title, options_to_merge.merge(:within => 3..5)
+    person.title = "too long"
   end
 
   # validates_length_of :is w/o mocha
 
-  def test_validates_length_of_is_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:wrong_length => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:wrong_length => 'global message'}}
-
-    Person.validates_length_of :title, :is => 5
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_length_of_is_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:wrong_length => 'global message'}}
-
-    Person.validates_length_of :title, :is => 5
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_length_of", :wrong_length do |person, options_to_merge|
+    Person.validates_length_of :title, options_to_merge.merge(:is => 5)
   end
 
   # validates_format_of w/o mocha
 
-  def test_validates_format_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:invalid => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:invalid => 'global message'}}
-
-    Person.validates_format_of :title, :with => /^[1-9][0-9]*$/
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_format_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:invalid => 'global message'}}
-
-    Person.validates_format_of :title, :with => /^[1-9][0-9]*$/
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_format_of", :invalid do |person, options_to_merge|
+    Person.validates_format_of :title, options_to_merge.merge(:with => /^[1-9][0-9]*$/)
   end
 
   # validates_inclusion_of w/o mocha
 
-  def test_validates_inclusion_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:inclusion => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:inclusion => 'global message'}}
-
-    Person.validates_inclusion_of :title, :in => %w(a b c)
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
+  set_expectations_for_validation "validates_inclusion_of", :inclusion do |person, options_to_merge|
+    Person.validates_inclusion_of :title, options_to_merge.merge(:in => %w(a b c))
   end
-
-  def test_validates_inclusion_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:inclusion => 'global message'}}
-
-    Person.validates_inclusion_of :title, :in => %w(a b c)
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
-  end
-
+    
   # validates_exclusion_of w/o mocha
 
-  def test_validates_exclusion_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:exclusion => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:exclusion => 'global message'}}
-
-    Person.validates_exclusion_of :title, :in => %w(a b c)
-    @person.title = 'a'
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_exclusion_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:exclusion => 'global message'}}
-
-    Person.validates_exclusion_of :title, :in => %w(a b c)
-    @person.title = 'a'
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_exclusion_of", :exclusion do |person, options_to_merge|
+    Person.validates_exclusion_of :title, options_to_merge.merge(:in => %w(a b c))
+    person.title = 'a'
   end
 
   # validates_numericality_of without :only_integer w/o mocha
 
-  def test_validates_numericality_of_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:not_a_number => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:not_a_number => 'global message'}}
-
-    Person.validates_numericality_of :title
-    @person.title = 'a'
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_numericality_of_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:not_a_number => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true
-    @person.title = 'a'
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_numericality_of", :not_a_number do |person, options_to_merge|
+    Person.validates_numericality_of :title, options_to_merge
+    person.title = 'a'
   end
 
   # validates_numericality_of with :only_integer w/o mocha
 
-  def test_validates_numericality_of_only_integer_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:not_an_integer => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:not_an_integer => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true
-    @person.title = '1.0'
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
+  set_expectations_for_validation "validates_numericality_of", :not_an_integer do |person, options_to_merge|
+    Person.validates_numericality_of :title, options_to_merge.merge(:only_integer => true)
+    person.title = '1.0'
   end
-
-  def test_validates_numericality_of_only_integer_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:not_an_integer => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true
-    @person.title = '1.0'
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
-  end
-
+  
   # validates_numericality_of :odd w/o mocha
 
-  def test_validates_numericality_of_odd_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:odd => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:odd => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true, :odd => true
-    @person.title = 0
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_numericality_of_odd_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:odd => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true, :odd => true
-    @person.title = 0
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_numericality_of", :odd do |person, options_to_merge|
+    Person.validates_numericality_of :title, options_to_merge.merge(:only_integer => true, :odd => true)
+    person.title = 0
   end
 
   # validates_numericality_of :less_than w/o mocha
 
-  def test_validates_numericality_of_less_than_finds_custom_model_key_translation
-    I18n.backend.store_translations 'en', :activemodel => {:errors => {:models => {:person => {:attributes => {:title => {:less_than => 'custom message'}}}}}}
-    I18n.backend.store_translations 'en', :errors => {:messages => {:less_than => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true, :less_than => 0
-    @person.title = 1
-    @person.valid?
-    assert_equal ['custom message'], @person.errors[:title]
-  end
-
-  def test_validates_numericality_of_less_than_finds_global_default_translation
-    I18n.backend.store_translations 'en', :errors => {:messages => {:less_than => 'global message'}}
-
-    Person.validates_numericality_of :title, :only_integer => true, :less_than => 0
-    @person.title = 1
-    @person.valid?
-    assert_equal ['global message'], @person.errors[:title]
+  set_expectations_for_validation "validates_numericality_of", :less_than do |person, options_to_merge|
+    Person.validates_numericality_of :title, options_to_merge.merge(:only_integer => true, :less_than => 0)
+    person.title = 1  
   end
 
   # test with validates_with
diff --git a/activerecord/lib/active_record/validations/associated.rb b/activerecord/lib/active_record/validations/associated.rb
index e416351..0b0f568 100644
--- a/activerecord/lib/active_record/validations/associated.rb
+++ b/activerecord/lib/active_record/validations/associated.rb
@@ -3,7 +3,7 @@ module ActiveRecord
     class AssociatedValidator < ActiveModel::EachValidator
       def validate_each(record, attribute, value)
         return if (value.is_a?(Array) ? value : [value]).collect{ |r| r.nil? || r.valid? }.all?
-        record.errors.add(attribute, :invalid, :default => options[:message], :value => value)
+        record.errors.add(attribute, :invalid, options.merge(:value => value))
       end
     end
 
diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb
index 6283bdd..1c9ecc7 100644
--- a/activerecord/lib/active_record/validations/uniqueness.rb
+++ b/activerecord/lib/active_record/validations/uniqueness.rb
@@ -32,7 +32,7 @@ module ActiveRecord
         end
 
         if relation.exists?
-          record.errors.add(attribute, :taken, :default => options[:message], :value => value)
+          record.errors.add(attribute, :taken, options.except(:case_sensitive, :scope).merge(:value => value))
         end
       end
 
diff --git a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
index 8ee2a58..454e42e 100644
--- a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
+++ b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -9,22 +9,22 @@ class I18nGenerateMessageValidationTest < ActiveRecord::TestCase
     I18n.backend = I18n::Backend::Simple.new
   end
 
-  # validates_associated: generate_message(attr_name, :invalid, :default => configuration[:message], :value => value)
+  # validates_associated: generate_message(attr_name, :invalid, :message => custom_message, :value => value)
   def test_generate_message_invalid_with_default_message
-    assert_equal 'is invalid', @topic.errors.generate_message(:title, :invalid, :default => nil, :value => 'title')
+    assert_equal 'is invalid', @topic.errors.generate_message(:title, :invalid, :value => 'title')
   end
 
   def test_generate_message_invalid_with_custom_message
-    assert_equal 'custom message title', @topic.errors.generate_message(:title, :invalid, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @topic.errors.generate_message(:title, :invalid, :message => 'custom message %{value}', :value => 'title')
   end
 
-  # validates_uniqueness_of: generate_message(attr_name, :taken, :default => configuration[:message])
+  # validates_uniqueness_of: generate_message(attr_name, :taken, :message => custom_message)
   def test_generate_message_taken_with_default_message
-    assert_equal "has already been taken", @topic.errors.generate_message(:title, :taken, :default => nil, :value => 'title')
+    assert_equal "has already been taken", @topic.errors.generate_message(:title, :taken, :value => 'title')
   end
 
   def test_generate_message_taken_with_custom_message
-    assert_equal 'custom message title', @topic.errors.generate_message(:title, :taken, :default => 'custom message %{value}', :value => 'title')
+    assert_equal 'custom message title', @topic.errors.generate_message(:title, :taken, :message => 'custom message %{value}', :value => 'title')
   end
 
   # ActiveRecord#RecordInvalid exception
diff --git a/activerecord/test/cases/validations/i18n_validation_test.rb b/activerecord/test/cases/validations/i18n_validation_test.rb
index 38fa2b8..6cc61e7 100644
--- a/activerecord/test/cases/validations/i18n_validation_test.rb
+++ b/activerecord/test/cases/validations/i18n_validation_test.rb
@@ -31,34 +31,40 @@ class I18nValidationTest < ActiveRecord::TestCase
     end
   end
 
-  # validates_uniqueness_of w/ mocha
+  # A set of common cases for ActiveModel::Validations message generation that
+  # are used to generate tests to keep things DRY
+  # 
+  COMMON_CASES = [
+  # [ case,                                validation_options,            generate_message_options]
+    [ "given no options",                  {},                            {}],
+    [ "given custom message",              {:message => "custom"},        {:message => "custom"}],
+    [ "given if condition",                {:if     => lambda { true }},  {}],
+    [ "given unless condition",            {:unless => lambda { false }}, {}],
+    [ "given option that is not reserved", {:format => "jpg"},            {:format => "jpg" }]
+    # TODO Add :on case, but below doesn't work, because then the validation isn't run for some reason
+    #      even when using .save instead .valid?
+    # [ "given on condition",     {:on => :save},                {}]
+  ]
 
-  def test_validates_uniqueness_of_generates_message
-    Topic.validates_uniqueness_of :title
-    @topic.title = unique_topic.title
-    @topic.errors.expects(:generate_message).with(:title, :taken, {:default => nil, :value => 'unique!'})
-    @topic.valid?
-  end
+  # validates_uniqueness_of w/ mocha
 
-  def test_validates_uniqueness_of_generates_message_with_custom_default_message
-    Topic.validates_uniqueness_of :title, :message => 'custom'
-    @topic.title = unique_topic.title
-    @topic.errors.expects(:generate_message).with(:title, :taken, {:default => 'custom', :value => 'unique!'})
-    @topic.valid?
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_uniqueness_of on generated message #{name}" do
+      Topic.validates_uniqueness_of :title, validation_options
+      @topic.title = unique_topic.title
+      @topic.errors.expects(:generate_message).with(:title, :taken, generate_message_options.merge(:value => 'unique!'))
+      @topic.valid?
+    end
   end
 
   # validates_associated w/ mocha
 
-  def test_validates_associated_generates_message
-    Topic.validates_associated :replies
-    replied_topic.errors.expects(:generate_message).with(:replies, :invalid, {:value => replied_topic.replies, :default => nil})
-    replied_topic.valid?
-  end
-
-  def test_validates_associated_generates_message_with_custom_default_message
-    Topic.validates_associated :replies
-    replied_topic.errors.expects(:generate_message).with(:replies, :invalid, {:value => replied_topic.replies, :default => nil})
-    replied_topic.valid?
+  COMMON_CASES.each do |name, validation_options, generate_message_options|
+    test "validates_associated on generated message #{name}" do
+      Topic.validates_associated :replies, validation_options
+      replied_topic.errors.expects(:generate_message).with(:replies, :invalid, generate_message_options.merge(:value => replied_topic.replies))
+      replied_topic.save
+    end
   end
 
   # validates_associated w/o mocha
-- 
1.6.0.2