Move relevant validation tests from Active Record to Active Model

17 files changed, 2150 insertions, 16 deletions

diff --git a/activemodel/test/cases/helper.rb b/activemodel/test/cases/helper.rb
index 1e5c6697cd..f023109a60 100644
--- a/activemodel/test/cases/helper.rb
+++ b/activemodel/test/cases/helper.rb
@@ -1,24 +1,9 @@
 $:.unshift(File.dirname(__FILE__) + '/../../lib')
-$:.unshift(File.dirname(__FILE__) + '/../../../activerecord/lib')
 $:.unshift(File.dirname(__FILE__) + '/../../../activesupport/lib')
 
 require 'config'
-require 'active_model'
-
-require 'active_record'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
 
-# Setup database connection
-db_file = "#{FIXTURES_ROOT}/fixture_database.sqlite3"
-ActiveRecord::Base.configurations = { ActiveRecord::Base.name => { :adapter => 'sqlite3', :database => db_file, :timeout => 5000 } }
-unless File.exist?(db_file)
-  puts "SQLite3 database not found at #{db_file}. Rebuilding it."
-  sqlite_command = %Q{sqlite3 "#{db_file}" "create table a (a integer); drop table a;"}
-  puts "Executing '#{sqlite_command}'"
-  raise StandardError.new("Seems that there is no sqlite3 executable available") unless system(sqlite_command)
-end
-ActiveRecord::Base.establish_connection(ActiveRecord::Base.name)
+require 'active_model'
 
 # Show backtraces for deprecated behavior for quicker cleanup.
 ActiveSupport::Deprecation.debug = true
diff --git a/activemodel/test/cases/test_database.rb b/activemodel/test/cases/test_database.rb
new file mode 100644
index 0000000000..509383ec59
--- /dev/null
+++ b/activemodel/test/cases/test_database.rb
@@ -0,0 +1,31 @@
+require 'logger'
+
+$:.unshift(File.dirname(__FILE__) + '/../../../activerecord/lib')
+require 'active_record'
+require 'active_record/fixtures'
+
+module ActiveModel
+  module TestDatabase
+    def self.included(base)
+      ActiveRecord::Base.logger = Logger.new("debug.log")
+      ActiveRecord::Base.establish_connection(:adapter => 'sqlite3', :database => ':memory:')
+
+      base.send :include, ActiveRecord::TestFixtures
+      base.setup :setup_database
+    end
+
+    def setup_database
+      unless $schema_file_loaded
+        begin
+          # TODO : May the better way be with you
+          original, $stdout = $stdout, StringIO.new
+          load(SCHEMA_FILE)
+        ensure
+          $stdout = original
+        end
+
+        $schema_file_loaded = true
+      end
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/acceptance_validation_test.rb b/activemodel/test/cases/validations/acceptance_validation_test.rb
new file mode 100644
index 0000000000..f5f0279554
--- /dev/null
+++ b/activemodel/test/cases/validations/acceptance_validation_test.rb
@@ -0,0 +1,73 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+require 'models/reply'
+require 'models/developer'
+
+class AcceptanceValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_terms_of_service_agreement_no_acceptance
+    Topic.validates_acceptance_of(:terms_of_service, :on => :create)
+
+    t = Topic.create("title" => "We should not be confirmed")
+    assert t.save
+  end
+
+  def test_terms_of_service_agreement
+    Topic.validates_acceptance_of(:terms_of_service, :on => :create)
+
+    t = Topic.create("title" => "We should be confirmed","terms_of_service" => "")
+    assert !t.save
+    assert_equal ["must be accepted"], t.errors[:terms_of_service]
+
+    t.terms_of_service = "1"
+    assert t.save
+  end
+
+  def test_eula
+    Topic.validates_acceptance_of(:eula, :message => "must be abided", :on => :create)
+
+    t = Topic.create("title" => "We should be confirmed","eula" => "")
+    assert !t.save
+    assert_equal ["must be abided"], t.errors[:eula]
+
+    t.eula = "1"
+    assert t.save
+  end
+
+  def test_terms_of_service_agreement_with_accept_value
+    Topic.validates_acceptance_of(:terms_of_service, :on => :create, :accept => "I agree.")
+
+    t = Topic.create("title" => "We should be confirmed", "terms_of_service" => "")
+    assert !t.save
+    assert_equal ["must be accepted"], t.errors[:terms_of_service]
+
+    t.terms_of_service = "I agree."
+    assert t.save
+  end
+
+  def test_validates_acceptance_of_as_database_column
+    repair_validations(Reply) do
+      Reply.validates_acceptance_of(:author_name)
+
+      reply = Reply.create("author_name" => "Dan Brown")
+      assert_equal "Dan Brown", reply["author_name"]
+    end
+  end
+
+  def test_validates_acceptance_of_with_custom_error_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_acceptance_of :salary, :message=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.salary = "0"
+      assert !d.valid?
+      assert_equal "This string contains 'single' and \"double\" quotes", d.errors[:salary].last
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/conditional_validation_test.rb b/activemodel/test/cases/validations/conditional_validation_test.rb
new file mode 100644
index 0000000000..d4cb3555f3
--- /dev/null
+++ b/activemodel/test/cases/validations/conditional_validation_test.rb
@@ -0,0 +1,140 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class ConditionalValidationTest < ActiveModel::TestCase
+ include ActiveModel::TestDatabase
+ include ActiveModel::ValidationsRepairHelper
+
+ repair_validations(Topic)
+  
+  def test_if_validation_using_method_true
+    # When the method returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :if => :condition_is_true )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_unless_validation_using_method_true
+    # When the method returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :unless => :condition_is_true )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert !t.errors[:title].any?
+  end
+
+  def test_if_validation_using_method_false
+    # When the method returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :if => :condition_is_true_but_its_not )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert t.errors[:title].empty?
+  end
+
+  def test_unless_validation_using_method_false
+    # When the method returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :unless => :condition_is_true_but_its_not )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_if_validation_using_string_true
+    # When the evaluated string returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :if => "a = 1; a == 1" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_unless_validation_using_string_true
+    # When the evaluated string returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :unless => "a = 1; a == 1" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert t.errors[:title].empty?
+  end
+
+  def test_if_validation_using_string_false
+    # When the evaluated string returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :if => "false")
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert t.errors[:title].empty?
+  end
+
+  def test_unless_validation_using_string_false
+    # When the evaluated string returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}", :unless => "false")
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_if_validation_using_block_true
+    # When the block returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}",
+      :if => Proc.new { |r| r.content.size > 4 } )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_unless_validation_using_block_true
+    # When the block returns true
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}",
+      :unless => Proc.new { |r| r.content.size > 4 } )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert t.errors[:title].empty?
+  end
+
+  def test_if_validation_using_block_false
+    # When the block returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}",
+      :if => Proc.new { |r| r.title != "uhohuhoh"} )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert t.errors[:title].empty?
+  end
+
+  def test_unless_validation_using_block_false
+    # When the block returns false
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}",
+      :unless => Proc.new { |r| r.title != "uhohuhoh"} )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  # previous implementation of validates_presence_of eval'd the
+  # string with the wrong binding, this regression test is to
+  # ensure that it works correctly
+  def test_validation_with_if_as_string
+    Topic.validates_presence_of(:title)
+    Topic.validates_presence_of(:author_name, :if => "title.to_s.match('important')")
+
+    t = Topic.new
+    assert !t.valid?, "A topic without a title should not be valid"
+    assert !t.errors.invalid?("author_name"), "A topic without an 'important' title should not require an author"
+
+    t.title = "Just a title"
+    assert t.valid?, "A topic with a basic title should be valid"
+
+    t.title = "A very important title"
+    assert !t.valid?, "A topic with an important title, but without an author, should not be valid"
+    assert t.errors.invalid?("author_name"), "A topic with an 'important' title should require an author"
+
+    t.author_name = "Hubert J. Farnsworth"
+    assert t.valid?, "A topic with an important title and author should be valid"
+  end
+end
diff --git a/activemodel/test/cases/validations/confirmation_validation_test.rb b/activemodel/test/cases/validations/confirmation_validation_test.rb
new file mode 100644
index 0000000000..c3caa63d0b
--- /dev/null
+++ b/activemodel/test/cases/validations/confirmation_validation_test.rb
@@ -0,0 +1,51 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+require 'models/developer'
+
+class ConfirmationValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_no_title_confirmation
+    Topic.validates_confirmation_of(:title)
+
+    t = Topic.new(:author_name => "Plutarch")
+    assert t.valid?
+
+    t.title_confirmation = "Parallel Lives"
+    assert !t.valid?
+
+    t.title_confirmation = nil
+    t.title = "Parallel Lives"
+    assert t.valid?
+
+    t.title_confirmation = "Parallel Lives"
+    assert t.valid?
+  end
+
+  def test_title_confirmation
+    Topic.validates_confirmation_of(:title)
+
+    t = Topic.create("title" => "We should be confirmed","title_confirmation" => "")
+    assert !t.save
+
+    t.title_confirmation = "We should be confirmed"
+    assert t.save
+  end
+
+  def test_validates_confirmation_of_with_custom_error_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_confirmation_of :name, :message=> "confirm 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = "John"
+      d.name_confirmation = "Johnny"
+      assert !d.valid?
+      assert_equal ["confirm 'single' and \"double\" quotes"], d.errors[:name]
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/exclusion_validation_test.rb b/activemodel/test/cases/validations/exclusion_validation_test.rb
new file mode 100644
index 0000000000..2e3da3c079
--- /dev/null
+++ b/activemodel/test/cases/validations/exclusion_validation_test.rb
@@ -0,0 +1,30 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class ExclusionValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_validates_exclusion_of
+    Topic.validates_exclusion_of( :title, :in => %w( abe monkey ) )
+
+    assert Topic.create("title" => "something", "content" => "abc").valid?
+    assert !Topic.create("title" => "monkey", "content" => "abc").valid?
+  end
+
+  def test_validates_exclusion_of_with_formatted_message
+    Topic.validates_exclusion_of( :title, :in => %w( abe monkey ), :message => "option {{value}} is restricted" )
+
+    assert Topic.create("title" => "something", "content" => "abc")
+
+    t = Topic.create("title" => "monkey")
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "option monkey is restricted", t.errors.on(:title)
+  end
+end
diff --git a/activemodel/test/cases/validations/format_validation_test.rb b/activemodel/test/cases/validations/format_validation_test.rb
new file mode 100644
index 0000000000..9a7a93a6c6
--- /dev/null
+++ b/activemodel/test/cases/validations/format_validation_test.rb
@@ -0,0 +1,81 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class PresenceValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_validate_format
+    Topic.validates_format_of(:title, :content, :with => /^Validation\smacros \w+!$/, :message => "is bad data")
+
+    t = Topic.create("title" => "i'm incorrect", "content" => "Validation macros rule!")
+    assert !t.valid?, "Shouldn't be valid"
+    assert !t.save, "Shouldn't save because it's invalid"
+    assert_equal ["is bad data"], t.errors[:title]
+    assert t.errors[:content].empty?
+
+    t.title = "Validation macros rule!"
+
+    assert t.save
+    assert t.errors[:title].empty?
+
+    assert_raise(ArgumentError) { Topic.validates_format_of(:title, :content) }
+  end
+
+  def test_validate_format_with_allow_blank
+    Topic.validates_format_of(:title, :with => /^Validation\smacros \w+!$/, :allow_blank=>true)
+    assert !Topic.create("title" => "Shouldn't be valid").valid?
+    assert Topic.create("title" => "").valid?
+    assert Topic.create("title" => nil).valid?
+    assert Topic.create("title" => "Validation macros rule!").valid?
+  end
+
+  # testing ticket #3142
+  def test_validate_format_numeric
+    Topic.validates_format_of(:title, :content, :with => /^[1-9][0-9]*$/, :message => "is bad data")
+
+    t = Topic.create("title" => "72x", "content" => "6789")
+    assert !t.valid?, "Shouldn't be valid"
+    assert !t.save, "Shouldn't save because it's invalid"
+    assert_equal ["is bad data"], t.errors[:title]
+    assert t.errors[:content].empty?
+
+    t.title = "-11"
+    assert !t.valid?, "Shouldn't be valid"
+
+    t.title = "03"
+    assert !t.valid?, "Shouldn't be valid"
+
+    t.title = "z44"
+    assert !t.valid?, "Shouldn't be valid"
+
+    t.title = "5v7"
+    assert !t.valid?, "Shouldn't be valid"
+
+    t.title = "1"
+
+    assert t.save
+    assert t.errors[:title].empty?
+  end
+
+  def test_validate_format_with_formatted_message
+    Topic.validates_format_of(:title, :with => /^Valid Title$/, :message => "can't be {{value}}")
+    t = Topic.create(:title => 'Invalid title')
+    assert_equal "can't be Invalid title", t.errors.on(:title)
+  end
+
+  def test_validates_format_of_with_custom_error_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_format_of :name, :with => /^(A-Z*)$/, :message=> "format 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = d.name_confirmation = "John 32"
+      assert !d.valid?
+      assert_equal ["format 'single' and \"double\" quotes"], d.errors[:name]
+    end
+  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
new file mode 100644
index 0000000000..871c69d06d
--- /dev/null
+++ b/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -0,0 +1,174 @@
+require "cases/helper"
+require 'models/topic'
+require 'models/reply'
+
+class I18nGenerateMessageValidationTest < Test::Unit::TestCase
+  def setup
+    reset_callbacks Topic
+    @topic = Topic.new
+    I18n.backend.store_translations :'en', {
+      :activerecord => {
+        :errors => {
+          :messages => {
+            :inclusion => "is not included in the list",
+            :exclusion => "is reserved",
+            :invalid => "is invalid",
+            :confirmation => "doesn't match confirmation",
+            :accepted  => "must be accepted",
+            :empty => "can't be empty",
+            :blank => "can't be blank",
+            :too_long => "is too long (maximum is {{count}} characters)",
+            :too_short => "is too short (minimum is {{count}} characters)",
+            :wrong_length => "is the wrong length (should be {{count}} characters)",
+            :not_a_number => "is not a number",
+            :greater_than => "must be greater than {{count}}",
+            :greater_than_or_equal_to => "must be greater than or equal to {{count}}",
+            :equal_to => "must be equal to {{count}}",
+            :less_than => "must be less than {{count}}",
+            :less_than_or_equal_to => "must be less than or equal to {{count}}",
+            :odd => "must be odd",
+            :even => "must be even"
+          }
+        }
+      }
+    }
+  end
+
+  def reset_callbacks(*models)
+    models.each do |model|
+      model.instance_variable_set("@validate_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+      model.instance_variable_set("@validate_on_create_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+      model.instance_variable_set("@validate_on_update_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+    end
+  end
+
+  # validates_inclusion_of: generate_message(attr_name, :inclusion, :default => configuration[:message], :value => value)
+  def test_generate_message_inclusion_with_default_message
+    assert_equal 'is not included in the list', @topic.errors.generate_message(:title, :inclusion, :default => nil, :value => 'title')
+  end
+
+  def test_generate_message_inclusion_with_custom_message
+    assert_equal 'custom message title', @topic.errors.generate_message(:title, :inclusion, :default => 'custom message {{value}}', :value => 'title')
+  end
+
+  # validates_exclusion_of: generate_message(attr_name, :exclusion, :default => configuration[:message], :value => value)
+  def test_generate_message_exclusion_with_default_message
+    assert_equal 'is reserved', @topic.errors.generate_message(:title, :exclusion, :default => nil, :value => 'title')
+  end
+
+  def test_generate_message_exclusion_with_custom_message
+    assert_equal 'custom message title', @topic.errors.generate_message(:title, :exclusion, :default => 'custom message {{value}}', :value => 'title')
+  end
+
+  # validates_associated: generate_message(attr_name, :invalid, :default => configuration[:message], :value => value)
+  # validates_format_of:  generate_message(attr_name, :invalid, :default => configuration[: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')
+  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')
+  end
+
+  # validates_confirmation_of: generate_message(attr_name, :confirmation, :default => configuration[:message])
+  def test_generate_message_confirmation_with_default_message
+    assert_equal "doesn't match confirmation", @topic.errors.generate_message(:title, :confirmation, :default => nil)
+  end
+
+  def test_generate_message_confirmation_with_custom_message
+    assert_equal 'custom message', @topic.errors.generate_message(:title, :confirmation, :default => 'custom message')
+  end
+
+  # validates_acceptance_of: generate_message(attr_name, :accepted, :default => configuration[:message])
+  def test_generate_message_accepted_with_default_message
+    assert_equal "must be accepted", @topic.errors.generate_message(:title, :accepted, :default => nil)
+  end
+
+  def test_generate_message_accepted_with_custom_message
+    assert_equal 'custom message', @topic.errors.generate_message(:title, :accepted, :default => 'custom message')
+  end
+
+  # add_on_empty: generate_message(attr, :empty, :default => custom_message)
+  def test_generate_message_empty_with_default_message
+    assert_equal "can't be empty", @topic.errors.generate_message(:title, :empty, :default => nil)
+  end
+
+  def test_generate_message_empty_with_custom_message
+    assert_equal 'custom message', @topic.errors.generate_message(:title, :empty, :default => 'custom message')
+  end
+
+  # add_on_blank: generate_message(attr, :blank, :default => custom_message)
+  def test_generate_message_blank_with_default_message
+    assert_equal "can't be blank", @topic.errors.generate_message(:title, :blank, :default => nil)
+  end
+
+  def test_generate_message_blank_with_custom_message
+    assert_equal 'custom message', @topic.errors.generate_message(:title, :blank, :default => 'custom message')
+  end
+
+  # validates_length_of: generate_message(attr, :too_long, :default => options[:too_long], :count => option_value.end)
+  def test_generate_message_too_long_with_default_message
+    assert_equal "is too long (maximum is 10 characters)", @topic.errors.generate_message(:title, :too_long, :default => nil, :count => 10)
+  end
+
+  def test_generate_message_too_long_with_custom_message
+    assert_equal 'custom message 10', @topic.errors.generate_message(:title, :too_long, :default => 'custom message {{count}}', :count => 10)
+  end
+
+  # validates_length_of: generate_message(attr, :too_short, :default => options[:too_short], :count => option_value.begin)
+  def test_generate_message_too_short_with_default_message
+    assert_equal "is too short (minimum is 10 characters)", @topic.errors.generate_message(:title, :too_short, :default => nil, :count => 10)
+  end
+
+  def test_generate_message_too_short_with_custom_message
+    assert_equal 'custom message 10', @topic.errors.generate_message(:title, :too_short, :default => 'custom message {{count}}', :count => 10)
+  end
+
+  # validates_length_of: generate_message(attr, key, :default => custom_message, :count => option_value)
+  def test_generate_message_wrong_length_with_default_message
+    assert_equal "is the wrong length (should be 10 characters)", @topic.errors.generate_message(:title, :wrong_length, :default => nil, :count => 10)
+  end
+
+  def test_generate_message_wrong_length_with_custom_message
+    assert_equal 'custom message 10', @topic.errors.generate_message(:title, :wrong_length, :default => 'custom message {{count}}', :count => 10)
+  end
+
+  # validates_numericality_of: generate_message(attr_name, :not_a_number, :value => raw_value, :default => configuration[:message])
+  def test_generate_message_not_a_number_with_default_message
+    assert_equal "is not a number", @topic.errors.generate_message(:title, :not_a_number, :default => nil, :value => 'title')
+  end
+
+  def test_generate_message_not_a_number_with_custom_message
+    assert_equal 'custom message title', @topic.errors.generate_message(:title, :not_a_number, :default => 'custom message {{value}}', :value => 'title')
+  end
+
+  # validates_numericality_of: generate_message(attr_name, option, :value => raw_value, :default => configuration[:message])
+  def test_generate_message_greater_than_with_default_message
+    assert_equal "must be greater than 10", @topic.errors.generate_message(:title, :greater_than, :default => nil, :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", @topic.errors.generate_message(:title, :greater_than_or_equal_to, :default => nil, :value => 'title', :count => 10)
+  end
+
+  def test_generate_message_equal_to_with_default_message
+    assert_equal "must be equal to 10", @topic.errors.generate_message(:title, :equal_to, :default => nil, :value => 'title', :count => 10)
+  end
+
+  def test_generate_message_less_than_with_default_message
+    assert_equal "must be less than 10", @topic.errors.generate_message(:title, :less_than, :default => nil, :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", @topic.errors.generate_message(:title, :less_than_or_equal_to, :default => nil, :value => 'title', :count => 10)
+  end
+
+  def test_generate_message_odd_with_default_message
+    assert_equal "must be odd", @topic.errors.generate_message(:title, :odd, :default => nil, :value => 'title', :count => 10)
+  end
+
+  def test_generate_message_even_with_default_message
+    assert_equal "must be even", @topic.errors.generate_message(:title, :even, :default => nil, :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
new file mode 100644
index 0000000000..2b2e52ca82
--- /dev/null
+++ b/activemodel/test/cases/validations/i18n_validation_test.rb
@@ -0,0 +1,672 @@
+require "cases/helper"
+require 'models/topic'
+require 'models/reply'
+
+class I18nValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+
+  def setup
+    reset_callbacks Topic
+    @topic = Topic.new
+    @old_load_path, @old_backend = I18n.load_path, I18n.backend
+    I18n.load_path.clear
+    I18n.backend = I18n::Backend::Simple.new
+    I18n.backend.store_translations('en', :activerecord => {:errors => {:messages => {:custom => nil}}})
+  end
+
+  def teardown
+    reset_callbacks Topic
+    I18n.load_path.replace @old_load_path
+    I18n.backend = @old_backend
+  end
+
+  def reset_callbacks(*models)
+    models.each do |model|
+      model.instance_variable_set("@validate_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+      model.instance_variable_set("@validate_on_create_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+      model.instance_variable_set("@validate_on_update_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
+    end
+  end
+
+  def test_default_error_messages_is_deprecated
+    assert_deprecated('Errors.default_error_messages') do
+      ActiveModel::Errors.default_error_messages
+    end
+  end
+
+  def test_percent_s_interpolation_syntax_in_error_messages_still_works
+    ActiveSupport::Deprecation.silence do
+      result = I18n.t :does_not_exist, :default => "%s interpolation syntax is deprecated", :value => 'this'
+      assert_equal result, "this interpolation syntax is deprecated"
+    end
+  end
+
+  def test_percent_s_interpolation_syntax_in_error_messages_is_deprecated
+    assert_deprecated('using %s in messages') do
+      I18n.t :does_not_exist, :default => "%s interpolation syntax is deprected", :value => 'this'
+    end
+  end
+
+  def test_percent_d_interpolation_syntax_in_error_messages_still_works
+    ActiveSupport::Deprecation.silence do
+      result = I18n.t :does_not_exist, :default => "%d interpolation syntaxes are deprecated", :count => 2
+      assert_equal result, "2 interpolation syntaxes are deprecated"
+    end
+  end
+
+  def test_percent_d_interpolation_syntax_in_error_messages_is_deprecated
+    assert_deprecated('using %d in messages') do
+      I18n.t :does_not_exist, :default => "%d interpolation syntaxes are deprected", :count => 2
+    end
+  end
+
+  # ActiveModel::Errors
+  def test_errors_generate_message_translates_custom_model_attribute_key
+
+    I18n.expects(:translate).with(
+      :topic,
+      { :count => 1,
+        :default => ['Topic'],
+        :scope => [:activerecord, :models]
+      }
+    ).returns('Topic')
+
+    I18n.expects(:translate).with(
+      :"topic.title",
+      { :count => 1,
+        :default => ['Title'],
+        :scope => [:activerecord, :attributes]
+      }
+    ).returns('Title')
+
+    I18n.expects(:translate).with(
+      :"models.topic.attributes.title.invalid",
+      :value => nil,
+      :scope => [:activerecord, :errors],
+      :default => [
+        :"models.topic.invalid",
+        'default from class def error 1',
+        :"messages.invalid"],
+      :attribute => "Title",
+      :model => "Topic"
+    ).returns('default from class def error 1')
+
+    @topic.errors.generate_message :title, :invalid, :default => 'default from class def error 1'
+  end
+
+  def test_errors_generate_message_translates_custom_model_attribute_keys_with_sti
+
+    I18n.expects(:translate).with(
+      :reply,
+      { :count => 1,
+        :default => [:topic, 'Reply'],
+        :scope => [:activerecord, :models]
+      }
+    ).returns('Reply')
+
+    I18n.expects(:translate).with(
+      :"reply.title",
+      { :count => 1,
+        :default => [:'topic.title', 'Title'],
+        :scope => [:activerecord, :attributes]
+      }
+    ).returns('Title')
+
+    I18n.expects(:translate).with(
+      :"models.reply.attributes.title.invalid",
+      :value => nil,
+      :scope => [:activerecord, :errors],
+      :default => [
+        :"models.reply.invalid",
+        :"models.topic.attributes.title.invalid",
+        :"models.topic.invalid",
+        'default from class def',
+        :"messages.invalid"],
+      :model => 'Reply',
+      :attribute => 'Title'
+    ).returns("default from class def")
+
+    Reply.new.errors.generate_message :title, :invalid, :default => 'default from class def'
+
+  end
+
+  def test_errors_add_on_empty_generates_message
+    @topic.errors.expects(:generate_message).with(:title, :empty, {:default => nil})
+    @topic.errors.add_on_empty :title
+  end
+
+  def test_errors_add_on_empty_generates_message_with_custom_default_message
+    @topic.errors.expects(:generate_message).with(:title, :empty, {:default => 'custom'})
+    @topic.errors.add_on_empty :title, 'custom'
+  end
+
+  def test_errors_add_on_blank_generates_message
+    @topic.errors.expects(:generate_message).with(:title, :blank, {:default => nil})
+    @topic.errors.add_on_blank :title
+  end
+
+  def test_errors_add_on_blank_generates_message_with_custom_default_message
+    @topic.errors.expects(:generate_message).with(:title, :blank, {:default => 'custom'})
+    @topic.errors.add_on_blank :title, 'custom'
+  end
+
+  def test_errors_full_messages_translates_human_attribute_name_for_model_attributes
+    @topic.errors.add('title', 'empty')
+    I18n.expects(:translate).with(:"topic.title", :default => ['Title'], :scope => [:activerecord, :attributes], :count => 1).returns('Title')
+    @topic.errors.full_messages :locale => 'en'
+  end
+
+  # ActiveRecord::Validations
+  # validates_confirmation_of w/ mocha
+  def test_validates_confirmation_of_generates_message
+    Topic.validates_confirmation_of :title
+    @topic.title_confirmation = 'foo'
+    @topic.errors.expects(:generate_message).with(:title, :confirmation, {:default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_confirmation_of_generates_message_with_custom_default_message
+    Topic.validates_confirmation_of :title, :message => 'custom'
+    @topic.title_confirmation = 'foo'
+    @topic.errors.expects(:generate_message).with(:title, :confirmation, {:default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_acceptance_of w/ mocha
+
+  def test_validates_acceptance_of_generates_message
+    Topic.validates_acceptance_of :title, :allow_nil => false
+    @topic.errors.expects(:generate_message).with(:title, :accepted, {:default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_acceptance_of_generates_message_with_custom_default_message
+    Topic.validates_acceptance_of :title, :message => 'custom', :allow_nil => false
+    @topic.errors.expects(:generate_message).with(:title, :accepted, {:default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_presence_of w/ mocha
+
+  def test_validates_presence_of_generates_message
+    Topic.validates_presence_of :title
+    @topic.errors.expects(:generate_message).with(:title, :blank, {:default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_presence_of_generates_message_with_custom_default_message
+    Topic.validates_presence_of :title, :message => 'custom'
+    @topic.errors.expects(:generate_message).with(:title, :blank, {:default => 'custom'})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_short
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_short_and_custom_default_message
+    Topic.validates_length_of :title, :within => 3..5, :too_short => 'custom'
+    @topic.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => 'custom'})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_long
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.title = 'this title is too long'
+    @topic.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_long_and_custom_default_message
+    Topic.validates_length_of :title, :within => 3..5, :too_long => 'custom'
+    @topic.title = 'this title is too long'
+    @topic.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_length_of :within w/ mocha
+
+  def test_validates_length_of_within_generates_message_with_title_too_short
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_short_and_custom_default_message
+    Topic.validates_length_of :title, :within => 3..5, :too_short => 'custom'
+    @topic.errors.expects(:generate_message).with(:title, :too_short, {:count => 3, :default => 'custom'})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_long
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.title = 'this title is too long'
+    @topic.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_within_generates_message_with_title_too_long_and_custom_default_message
+    Topic.validates_length_of :title, :within => 3..5, :too_long => 'custom'
+    @topic.title = 'this title is too long'
+    @topic.errors.expects(:generate_message).with(:title, :too_long, {:count => 5, :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_length_of :is w/ mocha
+
+  def test_validates_length_of_is_generates_message
+    Topic.validates_length_of :title, :is => 5
+    @topic.errors.expects(:generate_message).with(:title, :wrong_length, {:count => 5, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_length_of_is_generates_message_with_custom_default_message
+    Topic.validates_length_of :title, :is => 5, :message => 'custom'
+    @topic.errors.expects(:generate_message).with(:title, :wrong_length, {:count => 5, :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_format_of w/ mocha
+
+  def test_validates_format_of_generates_message
+    Topic.validates_format_of :title, :with => /^[1-9][0-9]*$/
+    @topic.title = '72x'
+    @topic.errors.expects(:generate_message).with(:title, :invalid, {:value => '72x', :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_format_of_generates_message_with_custom_default_message
+    Topic.validates_format_of :title, :with => /^[1-9][0-9]*$/, :message => 'custom'
+    @topic.title = '72x'
+    @topic.errors.expects(:generate_message).with(:title, :invalid, {:value => '72x', :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_inclusion_of w/ mocha
+
+  def test_validates_inclusion_of_generates_message
+    Topic.validates_inclusion_of :title, :in => %w(a b c)
+    @topic.title = 'z'
+    @topic.errors.expects(:generate_message).with(:title, :inclusion, {:value => 'z', :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_inclusion_of_generates_message_with_custom_default_message
+    Topic.validates_inclusion_of :title, :in => %w(a b c), :message => 'custom'
+    @topic.title = 'z'
+    @topic.errors.expects(:generate_message).with(:title, :inclusion, {:value => 'z', :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_exclusion_of w/ mocha
+
+  def test_validates_exclusion_of_generates_message
+    Topic.validates_exclusion_of :title, :in => %w(a b c)
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :exclusion, {:value => 'a', :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_exclusion_of_generates_message_with_custom_default_message
+    Topic.validates_exclusion_of :title, :in => %w(a b c), :message => 'custom'
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :exclusion, {:value => 'a', :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_numericality_of without :only_integer w/ mocha
+
+  def test_validates_numericality_of_generates_message
+    Topic.validates_numericality_of :title
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_numericality_of_generates_message_with_custom_default_message
+    Topic.validates_numericality_of :title, :message => 'custom'
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_numericality_of with :only_integer w/ mocha
+
+  def test_validates_numericality_of_only_integer_generates_message
+    Topic.validates_numericality_of :title, :only_integer => true
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_numericality_of_only_integer_generates_message_with_custom_default_message
+    Topic.validates_numericality_of :title, :only_integer => true, :message => 'custom'
+    @topic.title = 'a'
+    @topic.errors.expects(:generate_message).with(:title, :not_a_number, {:value => 'a', :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_numericality_of :odd w/ mocha
+
+  def test_validates_numericality_of_odd_generates_message
+    Topic.validates_numericality_of :title, :only_integer => true, :odd => true
+    @topic.title = 0
+    @topic.errors.expects(:generate_message).with(:title, :odd, {:value => 0, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_numericality_of_odd_generates_message_with_custom_default_message
+    Topic.validates_numericality_of :title, :only_integer => true, :odd => true, :message => 'custom'
+    @topic.title = 0
+    @topic.errors.expects(:generate_message).with(:title, :odd, {:value => 0, :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_numericality_of :less_than w/ mocha
+
+  def test_validates_numericality_of_less_than_generates_message
+    Topic.validates_numericality_of :title, :only_integer => true, :less_than => 0
+    @topic.title = 1
+    @topic.errors.expects(:generate_message).with(:title, :less_than, {:value => 1, :count => 0, :default => nil})
+    @topic.valid?
+  end
+
+  def test_validates_numericality_of_odd_generates_message_with_custom_default_message
+    Topic.validates_numericality_of :title, :only_integer => true, :less_than => 0, :message => 'custom'
+    @topic.title = 1
+    @topic.errors.expects(:generate_message).with(:title, :less_than, {:value => 1, :count => 0, :default => 'custom'})
+    @topic.valid?
+  end
+
+  # validates_confirmation_of w/o mocha
+
+  def test_validates_confirmation_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:confirmation => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:confirmation => 'global message'}}}
+
+    Topic.validates_confirmation_of :title
+    @topic.title_confirmation = 'foo'
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_confirmation_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:confirmation => 'global message'}}}
+
+    Topic.validates_confirmation_of :title
+    @topic.title_confirmation = 'foo'
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_acceptance_of w/o mocha
+
+  def test_validates_acceptance_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:accepted => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:accepted => 'global message'}}}
+
+    Topic.validates_acceptance_of :title, :allow_nil => false
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_acceptance_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:accepted => 'global message'}}}
+
+    Topic.validates_acceptance_of :title, :allow_nil => false
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_presence_of w/o mocha
+
+  def test_validates_presence_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:blank => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:blank => 'global message'}}}
+
+    Topic.validates_presence_of :title
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_presence_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:blank => 'global message'}}}
+
+    Topic.validates_presence_of :title
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_length_of :within w/o mocha
+
+  def test_validates_length_of_within_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:too_short => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:too_short => 'global message'}}}
+
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_length_of_within_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:too_short => 'global message'}}}
+
+    Topic.validates_length_of :title, :within => 3..5
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_length_of :is w/o mocha
+
+  def test_validates_length_of_is_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:wrong_length => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:wrong_length => 'global message'}}}
+
+    Topic.validates_length_of :title, :is => 5
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_length_of_is_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:wrong_length => 'global message'}}}
+
+    Topic.validates_length_of :title, :is => 5
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  def test_validates_length_of_is_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:wrong_length => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:wrong_length => 'global message'}}}
+
+    Topic.validates_length_of :title, :is => 5
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_length_of_is_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:wrong_length => 'global message'}}}
+
+    Topic.validates_length_of :title, :is => 5
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+
+  # validates_format_of w/o mocha
+
+  def test_validates_format_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:invalid => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:invalid => 'global message'}}}
+
+    Topic.validates_format_of :title, :with => /^[1-9][0-9]*$/
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_format_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:invalid => 'global message'}}}
+
+    Topic.validates_format_of :title, :with => /^[1-9][0-9]*$/
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_inclusion_of w/o mocha
+
+  def test_validates_inclusion_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:inclusion => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:inclusion => 'global message'}}}
+
+    Topic.validates_inclusion_of :title, :in => %w(a b c)
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_inclusion_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:inclusion => 'global message'}}}
+
+    Topic.validates_inclusion_of :title, :in => %w(a b c)
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  # validates_exclusion_of w/o mocha
+
+  def test_validates_exclusion_of_finds_custom_model_key_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:exclusion => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:exclusion => 'global message'}}}
+
+    Topic.validates_exclusion_of :title, :in => %w(a b c)
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_exclusion_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:exclusion => 'global message'}}}
+
+    Topic.validates_exclusion_of :title, :in => %w(a b c)
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  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', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:not_a_number => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:not_a_number => 'global message'}}}
+
+    Topic.validates_numericality_of :title
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_numericality_of_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:not_a_number => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  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', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:not_a_number => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:not_a_number => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_numericality_of_only_integer_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:not_a_number => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true
+    @topic.title = 'a'
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(: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', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:odd => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:odd => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true, :odd => true
+    @topic.title = 0
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_numericality_of_odd_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:odd => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true, :odd => true
+    @topic.title = 0
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  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', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:less_than => 'custom message'}}}}}}
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:less_than => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true, :less_than => 0
+    @topic.title = 1
+    @topic.valid?
+    assert_equal 'custom message', @topic.errors.on(:title)
+  end
+
+  def test_validates_numericality_of_less_than_finds_global_default_translation
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:less_than => 'global message'}}}
+
+    Topic.validates_numericality_of :title, :only_integer => true, :less_than => 0
+    @topic.title = 1
+    @topic.valid?
+    assert_equal 'global message', @topic.errors.on(:title)
+  end
+
+  def test_validations_with_message_symbol_must_translate
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:messages => {:custom_error => "I am a custom error"}}}
+    Topic.validates_presence_of :title, :message => :custom_error
+    @topic.title = nil
+    @topic.valid?
+    assert_equal "I am a custom error", @topic.errors.on(:title)
+  end
+
+  def test_validates_with_message_symbol_must_translate_per_attribute
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:attributes => {:title => {:custom_error => "I am a custom error"}}}}}}
+    Topic.validates_presence_of :title, :message => :custom_error
+    @topic.title = nil
+    @topic.valid?
+    assert_equal "I am a custom error", @topic.errors.on(:title)
+  end
+
+  def test_validates_with_message_symbol_must_translate_per_model
+    I18n.backend.store_translations 'en', :activerecord => {:errors => {:models => {:topic => {:custom_error => "I am a custom error"}}}}
+    Topic.validates_presence_of :title, :message => :custom_error
+    @topic.title = nil
+    @topic.valid?
+    assert_equal "I am a custom error", @topic.errors.on(:title)
+  end
+
+  def test_validates_with_message_string
+    Topic.validates_presence_of :title, :message => "I am a custom error"
+    @topic.title = nil
+    @topic.valid?
+    assert_equal "I am a custom error", @topic.errors.on(:title)
+  end
+
+end
\ No newline at end of file
diff --git a/activemodel/test/cases/validations/inclusion_validation_test.rb b/activemodel/test/cases/validations/inclusion_validation_test.rb
new file mode 100644
index 0000000000..7b2020c719
--- /dev/null
+++ b/activemodel/test/cases/validations/inclusion_validation_test.rb
@@ -0,0 +1,63 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class InclusionValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_validates_inclusion_of
+    Topic.validates_inclusion_of( :title, :in => %w( a b c d e f g ) )
+
+    assert !Topic.create("title" => "a!", "content" => "abc").valid?
+    assert !Topic.create("title" => "a b", "content" => "abc").valid?
+    assert !Topic.create("title" => nil, "content" => "def").valid?
+
+    t = Topic.create("title" => "a", "content" => "I know you are but what am I?")
+    assert t.valid?
+    t.title = "uhoh"
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "is not included in the list", t.errors.on(:title)
+
+    assert_raise(ArgumentError) { Topic.validates_inclusion_of( :title, :in => nil ) }
+    assert_raise(ArgumentError) { Topic.validates_inclusion_of( :title, :in => 0) }
+
+    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => "hi!" ) }
+    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => {} ) }
+    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => [] ) }
+  end
+
+  def test_validates_inclusion_of_with_allow_nil
+    Topic.validates_inclusion_of( :title, :in => %w( a b c d e f g ), :allow_nil=>true )
+
+    assert !Topic.create("title" => "a!", "content" => "abc").valid?
+    assert !Topic.create("title" => "", "content" => "abc").valid?
+    assert Topic.create("title" => nil, "content" => "abc").valid?
+  end
+
+  def test_validates_inclusion_of_with_formatted_message
+    Topic.validates_inclusion_of( :title, :in => %w( a b c d e f g ), :message => "option {{value}} is not in the list" )
+
+    assert Topic.create("title" => "a", "content" => "abc").valid?
+
+    t = Topic.create("title" => "uhoh", "content" => "abc")
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "option uhoh is not in the list", t.errors.on(:title)
+  end
+
+  def test_validates_inclusion_of_with_custom_error_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_inclusion_of :salary, :in => 1000..80000, :message=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.salary = "90,000"
+      assert !d.valid?
+      assert_equal "This string contains 'single' and \"double\" quotes", d.errors[:salary].last
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/length_validation_test.rb b/activemodel/test/cases/validations/length_validation_test.rb
new file mode 100644
index 0000000000..daca363b57
--- /dev/null
+++ b/activemodel/test/cases/validations/length_validation_test.rb
@@ -0,0 +1,443 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class LengthValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_validates_length_of_with_allow_nil
+    Topic.validates_length_of( :title, :is => 5, :allow_nil=>true )
+
+    assert !Topic.create("title" => "ab").valid?
+    assert !Topic.create("title" => "").valid?
+    assert Topic.create("title" => nil).valid?
+    assert Topic.create("title" => "abcde").valid?
+  end
+
+  def test_validates_length_of_with_allow_blank
+    Topic.validates_length_of( :title, :is => 5, :allow_blank=>true )
+
+    assert !Topic.create("title" => "ab").valid?
+    assert Topic.create("title" => "").valid?
+    assert Topic.create("title" => nil).valid?
+    assert Topic.create("title" => "abcde").valid?
+  end
+
+  def test_validates_length_of_using_minimum
+    Topic.validates_length_of :title, :minimum => 5
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = "not"
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "is too short (minimum is 5 characters)", t.errors.on(:title)
+
+    t.title = ""
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "is too short (minimum is 5 characters)", t.errors.on(:title)
+
+    t.title = nil
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal ["is too short (minimum is 5 characters)"], t.errors["title"]
+  end
+
+  def test_optionally_validates_length_of_using_minimum
+    Topic.validates_length_of :title, :minimum => 5, :allow_nil => true
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = nil
+    assert t.valid?
+  end
+
+  def test_validates_length_of_using_maximum
+    Topic.validates_length_of :title, :maximum => 5
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = "notvalid"
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "is too long (maximum is 5 characters)", t.errors.on(:title)
+
+    t.title = ""
+    assert t.valid?
+
+    t.title = nil
+    assert !t.valid?
+  end
+
+  def test_optionally_validates_length_of_using_maximum
+    Topic.validates_length_of :title, :maximum => 5, :allow_nil => true
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = nil
+    assert t.valid?
+  end
+
+  def test_validates_length_of_using_within
+    Topic.validates_length_of(:title, :content, :within => 3..5)
+
+    t = Topic.new("title" => "a!", "content" => "I'm ooooooooh so very long")
+    assert !t.valid?
+    assert_equal "is too short (minimum is 3 characters)", t.errors.on(:title)
+    assert_equal "is too long (maximum is 5 characters)", t.errors.on(:content)
+
+    t.title = nil
+    t.content = nil
+    assert !t.valid?
+    assert_equal "is too short (minimum is 3 characters)", t.errors.on(:title)
+    assert_equal "is too short (minimum is 3 characters)", t.errors.on(:content)
+
+    t.title = "abe"
+    t.content  = "mad"
+    assert t.valid?
+  end
+
+  def test_optionally_validates_length_of_using_within
+    Topic.validates_length_of :title, :content, :within => 3..5, :allow_nil => true
+
+    t = Topic.create('title' => 'abc', 'content' => 'abcd')
+    assert t.valid?
+
+    t.title = nil
+    assert t.valid?
+  end
+
+  def test_optionally_validates_length_of_using_within_on_create
+    Topic.validates_length_of :title, :content, :within => 5..10, :on => :create, :too_long => "my string is too long: {{count}}"
+
+    t = Topic.create("title" => "thisisnotvalid", "content" => "whatever")
+    assert !t.save
+    assert t.errors.on(:title)
+    assert_equal "my string is too long: 10", t.errors.on(:title)
+
+    t.title = "butthisis"
+    assert t.save
+
+    t.title = "few"
+    assert t.save
+
+    t.content = "andthisislong"
+    assert t.save
+
+    t.content = t.title = "iamfine"
+    assert t.save
+  end
+
+  def test_optionally_validates_length_of_using_within_on_update
+    Topic.validates_length_of :title, :content, :within => 5..10, :on => :update, :too_short => "my string is too short: {{count}}"
+
+    t = Topic.create("title" => "vali", "content" => "whatever")
+    assert !t.save
+    assert t.errors.on(:title)
+
+    t.title = "not"
+    assert !t.save
+    assert t.errors.on(:title)
+    assert_equal "my string is too short: 5", t.errors.on(:title)
+
+    t.title = "valid"
+    t.content = "andthisistoolong"
+    assert !t.save
+    assert t.errors.on(:content)
+
+    t.content = "iamfine"
+    assert t.save
+  end
+
+  def test_validates_length_of_using_is
+    Topic.validates_length_of :title, :is => 5
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = "notvalid"
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "is the wrong length (should be 5 characters)", t.errors.on(:title)
+
+    t.title = ""
+    assert !t.valid?
+
+    t.title = nil
+    assert !t.valid?
+  end
+
+  def test_optionally_validates_length_of_using_is
+    Topic.validates_length_of :title, :is => 5, :allow_nil => true
+
+    t = Topic.create("title" => "valid", "content" => "whatever")
+    assert t.valid?
+
+    t.title = nil
+    assert t.valid?
+  end
+
+  def test_validates_length_of_using_bignum
+    bigmin = 2 ** 30
+    bigmax = 2 ** 32
+    bigrange = bigmin...bigmax
+    assert_nothing_raised do
+      Topic.validates_length_of :title, :is => bigmin + 5
+      Topic.validates_length_of :title, :within => bigrange
+      Topic.validates_length_of :title, :in => bigrange
+      Topic.validates_length_of :title, :minimum => bigmin
+      Topic.validates_length_of :title, :maximum => bigmax
+    end
+  end
+
+  def test_validates_length_with_globally_modified_error_message
+    ActiveSupport::Deprecation.silence do
+      ActiveModel::Errors.default_error_messages[:too_short] = 'tu est trops petit hombre {{count}}'
+    end
+    Topic.validates_length_of :title, :minimum => 10
+    t = Topic.create(:title => 'too short')
+    assert !t.valid?
+
+    assert_equal 'tu est trops petit hombre 10', t.errors.on(:title)
+  end
+
+  def test_validates_length_of_nasty_params
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :minimum=>6, :maximum=>9) }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :maximum=>9) }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :minimum=>9) }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :is=>9) }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :minimum=>"a") }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :maximum=>"a") }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>"a") }
+    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :is=>"a") }
+  end
+
+  def test_validates_length_of_custom_errors_for_minimum_with_message
+    Topic.validates_length_of( :title, :minimum=>5, :message=>"boo {{count}}" )
+    t = Topic.create("title" => "uhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "boo 5", t.errors.on(:title)
+  end
+
+  def test_validates_length_of_custom_errors_for_minimum_with_too_short
+    Topic.validates_length_of( :title, :minimum=>5, :too_short=>"hoo {{count}}" )
+    t = Topic.create("title" => "uhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal "hoo 5", t.errors.on(:title)
+  end
+
+  def test_validates_length_of_custom_errors_for_maximum_with_message
+    Topic.validates_length_of( :title, :maximum=>5, :message=>"boo {{count}}" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors.on(:title)
+    assert_equal ["boo 5"], t.errors[:title]
+  end
+
+  def test_validates_length_of_custom_errors_for_in
+    Topic.validates_length_of(:title, :in => 10..20, :message => "hoo {{count}}")
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 10"], t.errors["title"]
+
+    t = Topic.create("title" => "uhohuhohuhohuhohuhohuhohuhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 20"], t.errors["title"]
+  end
+
+  def test_validates_length_of_custom_errors_for_maximum_with_too_long
+    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo {{count}}" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_validates_length_of_custom_errors_for_is_with_message
+    Topic.validates_length_of( :title, :is=>5, :message=>"boo {{count}}" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["boo 5"], t.errors["title"]
+  end
+
+  def test_validates_length_of_custom_errors_for_is_with_wrong_length
+    Topic.validates_length_of( :title, :is=>5, :wrong_length=>"hoo {{count}}" )
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_validates_length_of_using_minimum_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :minimum => 5
+
+      t = Topic.create("title" => "一二三四五", "content" => "whatever")
+      assert t.valid?
+
+      t.title = "一二三四"
+      assert !t.valid?
+      assert t.errors[:title].any?
+      assert_equal ["is too short (minimum is 5 characters)"], t.errors["title"]
+    end
+  end
+
+  def test_validates_length_of_using_maximum_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :maximum => 5
+
+      t = Topic.create("title" => "一二三四五", "content" => "whatever")
+      assert t.valid?
+
+      t.title = "一二34五六"
+      assert !t.valid?
+      assert t.errors[:title].any?
+      assert_equal ["is too long (maximum is 5 characters)"], t.errors["title"]
+    end
+  end
+
+  def test_validates_length_of_using_within_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of(:title, :content, :within => 3..5)
+
+      t = Topic.new("title" => "一二", "content" => "12三四五六七")
+      assert !t.valid?
+      assert_equal ["is too short (minimum is 3 characters)"], t.errors[:title]
+      assert_equal ["is too long (maximum is 5 characters)"], t.errors[:content]
+      t.title = "一二三"
+      t.content  = "12三"
+      assert t.valid?
+    end
+  end
+
+  def test_optionally_validates_length_of_using_within_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :within => 3..5, :allow_nil => true
+
+      t = Topic.create(:title => "一二三四五")
+      assert t.valid?, t.errors.inspect
+
+      t = Topic.create(:title => "一二三")
+      assert t.valid?, t.errors.inspect
+
+      t.title = nil
+      assert t.valid?, t.errors.inspect
+    end
+  end
+
+  def test_optionally_validates_length_of_using_within_on_create_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :within => 5..10, :on => :create, :too_long => "長すぎます: {{count}}"
+
+      t = Topic.create("title" => "一二三四五六七八九十A", "content" => "whatever")
+      assert !t.save
+      assert t.errors[:title].any?
+      assert_equal "長すぎます: 10", t.errors[:title].first
+
+      t.title = "一二三四五六七八九"
+      assert t.save
+
+      t.title = "一二3"
+      assert t.save
+
+      t.content = "一二三四五六七八九十"
+      assert t.save
+
+      t.content = t.title = "一二三四五六"
+      assert t.save
+    end
+  end
+
+  def test_optionally_validates_length_of_using_within_on_update_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :within => 5..10, :on => :update, :too_short => "短すぎます: {{count}}"
+
+      t = Topic.create("title" => "一二三4", "content" => "whatever")
+      assert !t.save
+      assert t.errors[:title].any?
+
+      t.title = "1二三4"
+      assert !t.save
+      assert t.errors[:title].any?
+      assert_equal "短すぎます: 5", t.errors.on(:title)
+
+      t.title = "一二三四五六七八九十A"
+      assert !t.save
+      assert t.errors[:title].any?
+
+      t.title = "一二345"
+      assert t.save
+    end
+  end
+
+  def test_validates_length_of_using_is_utf8
+    with_kcode('UTF8') do
+      Topic.validates_length_of :title, :is => 5
+
+      t = Topic.create("title" => "一二345", "content" => "whatever")
+      assert t.valid?
+
+      t.title = "一二345六"
+      assert !t.valid?
+      assert t.errors[:title].any?
+      assert_equal ["is the wrong length (should be 5 characters)"], t.errors["title"]
+    end
+  end
+
+  def test_validates_length_of_with_block
+    Topic.validates_length_of :content, :minimum => 5, :too_short=>"Your essay must be at least {{count}} words.",
+                                        :tokenizer => lambda {|str| str.scan(/\w+/) }
+    t = Topic.create!(:content => "this content should be long enough")
+    assert t.valid?
+
+    t.content = "not long enough"
+    assert !t.valid?
+    assert t.errors[:content].any?
+    assert_equal ["Your essay must be at least 5 words."], t.errors[:content]
+  end
+
+  def test_validates_length_of_with_custom_too_long_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_length_of :name, :maximum => 4, :too_long=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = "Jeffrey"
+      assert !d.valid?
+      assert_equal ["This string contains 'single' and \"double\" quotes"], d.errors[:name]
+    end
+  end
+
+  def test_validates_length_of_with_custom_too_short_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_length_of :name, :minimum => 4, :too_short=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = "Joe"
+      assert !d.valid?
+      assert_equal ["This string contains 'single' and \"double\" quotes"], d.errors[:name]
+    end
+  end
+
+  def test_validates_length_of_with_custom_message_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_length_of :name, :minimum => 4, :message=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = "Joe"
+      assert !d.valid?
+      assert_equal ["This string contains 'single' and \"double\" quotes"], d.errors[:name]
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/numericality_validation_test.rb b/activemodel/test/cases/validations/numericality_validation_test.rb
new file mode 100644
index 0000000000..3a30c0cec1
--- /dev/null
+++ b/activemodel/test/cases/validations/numericality_validation_test.rb
@@ -0,0 +1,163 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+require 'models/developer'
+
+class NumericalityValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  NIL = [nil]
+  BLANK = ["", " ", " \t \r \n"]
+  BIGDECIMAL_STRINGS = %w(12345678901234567890.1234567890) # 30 significent digits
+  FLOAT_STRINGS = %w(0.0 +0.0 -0.0 10.0 10.5 -10.5 -0.0001 -090.1 90.1e1 -90.1e5 -90.1e-5 90e-5)
+  INTEGER_STRINGS = %w(0 +0 -0 10 +10 -10 0090 -090)
+  FLOATS = [0.0, 10.0, 10.5, -10.5, -0.0001] + FLOAT_STRINGS
+  INTEGERS = [0, 10, -10] + INTEGER_STRINGS
+  BIGDECIMAL = BIGDECIMAL_STRINGS.collect! { |bd| BigDecimal.new(bd) }
+  JUNK = ["not a number", "42 not a number", "0xdeadbeef", "00-1", "--3", "+-3", "+3-1", "-+019.0", "12.12.13.12", "123\nnot a number"]
+  INFINITY = [1.0/0.0]
+
+  def test_default_validates_numericality_of
+    Topic.validates_numericality_of :approved
+    invalid!(NIL + BLANK + JUNK)
+    valid!(FLOATS + INTEGERS + BIGDECIMAL + INFINITY)
+  end
+
+  def test_validates_numericality_of_with_nil_allowed
+    Topic.validates_numericality_of :approved, :allow_nil => true
+
+    invalid!(JUNK)
+    valid!(NIL + BLANK + FLOATS + INTEGERS + BIGDECIMAL + INFINITY)
+  end
+
+  def test_validates_numericality_of_with_integer_only
+    Topic.validates_numericality_of :approved, :only_integer => true
+
+    invalid!(NIL + BLANK + JUNK + FLOATS + BIGDECIMAL + INFINITY)
+    valid!(INTEGERS)
+  end
+
+  def test_validates_numericality_of_with_integer_only_and_nil_allowed
+    Topic.validates_numericality_of :approved, :only_integer => true, :allow_nil => true
+
+    invalid!(JUNK + FLOATS + BIGDECIMAL + INFINITY)
+    valid!(NIL + BLANK + INTEGERS)
+  end
+
+  def test_validates_numericality_with_greater_than
+    Topic.validates_numericality_of :approved, :greater_than => 10
+
+    invalid!([-10, 10], 'must be greater than 10')
+    valid!([11])
+  end
+
+  def test_validates_numericality_with_greater_than_or_equal
+    Topic.validates_numericality_of :approved, :greater_than_or_equal_to => 10
+
+    invalid!([-9, 9], 'must be greater than or equal to 10')
+    valid!([10])
+  end
+
+  def test_validates_numericality_with_equal_to
+    Topic.validates_numericality_of :approved, :equal_to => 10
+
+    invalid!([-10, 11] + INFINITY, 'must be equal to 10')
+    valid!([10])
+  end
+
+  def test_validates_numericality_with_less_than
+    Topic.validates_numericality_of :approved, :less_than => 10
+
+    invalid!([10], 'must be less than 10')
+    valid!([-9, 9])
+  end
+
+  def test_validates_numericality_with_less_than_or_equal_to
+    Topic.validates_numericality_of :approved, :less_than_or_equal_to => 10
+
+    invalid!([11], 'must be less than or equal to 10')
+    valid!([-10, 10])
+  end
+
+  def test_validates_numericality_with_odd
+    Topic.validates_numericality_of :approved, :odd => true
+
+    invalid!([-2, 2], 'must be odd')
+    valid!([-1, 1])
+  end
+
+  def test_validates_numericality_with_even
+    Topic.validates_numericality_of :approved, :even => true
+
+    invalid!([-1, 1], 'must be even')
+    valid!([-2, 2])
+  end
+
+  def test_validates_numericality_with_greater_than_less_than_and_even
+    Topic.validates_numericality_of :approved, :greater_than => 1, :less_than => 4, :even => true
+
+    invalid!([1, 3, 4])
+    valid!([2])
+  end
+
+  def test_validates_numericality_with_numeric_message
+    Topic.validates_numericality_of :approved, :less_than => 4, :message => "smaller than {{count}}"
+    topic = Topic.new("title" => "numeric test", "approved" => 10)
+
+    assert !topic.valid?
+    assert_equal "smaller than 4", topic.errors.on(:approved)
+
+    Topic.validates_numericality_of :approved, :greater_than => 4, :message => "greater than {{count}}"
+    topic = Topic.new("title" => "numeric test", "approved" => 1)
+
+    assert !topic.valid?
+    assert_equal "greater than 4", topic.errors.on(:approved)
+  end
+
+  private
+
+  def invalid!(values, error = nil)
+    with_each_topic_approved_value(values) do |topic, value|
+      assert !topic.valid?, "#{value.inspect} not rejected as a number"
+      assert topic.errors[:approved].any?, "FAILED for #{value.inspect}"
+      assert_equal error, topic.errors[:approved].first if error
+    end
+  end
+
+  def valid!(values)
+    with_each_topic_approved_value(values) do |topic, value|
+      assert topic.valid?, "#{value.inspect} not accepted as a number"
+    end
+  end
+
+  def with_each_topic_approved_value(values)
+    topic = Topic.new(:title => "numeric test", :content => "whatever")
+    values.each do |value|
+      topic.approved = value
+      yield topic, value
+    end
+  end
+
+  def test_numericality_with_getter_method
+    repair_validations(Developer) do
+      Developer.validates_numericality_of( :salary )
+      developer = Developer.new("name" => "michael", "salary" => nil)
+      developer.instance_eval("def salary; read_attribute('salary') ? read_attribute('salary') : 100000; end")
+      assert developer.valid?
+    end
+  end
+
+  def test_numericality_with_allow_nil_and_getter_method
+    repair_validations(Developer) do
+      Developer.validates_numericality_of( :salary, :allow_nil => true)
+      developer = Developer.new("name" => "michael", "salary" => nil)
+      developer.instance_eval("def salary; read_attribute('salary') ? read_attribute('salary') : 100000; end")
+      assert developer.valid?
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations/presence_validation_test.rb b/activemodel/test/cases/validations/presence_validation_test.rb
new file mode 100644
index 0000000000..5bf29be491
--- /dev/null
+++ b/activemodel/test/cases/validations/presence_validation_test.rb
@@ -0,0 +1,41 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+
+class PresenceValidationTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  repair_validations(Topic)
+
+  def test_validate_presences
+    Topic.validates_presence_of(:title, :content)
+
+    t = Topic.create
+    assert !t.save
+    assert_equal ["can't be blank"], t.errors[:title]
+    assert_equal ["can't be blank"], t.errors[:content]
+
+    t.title = "something"
+    t.content  = "   "
+
+    assert !t.save
+    assert_equal ["can't be blank"], t.errors[:content]
+
+    t.content = "like stuff"
+
+    assert t.save
+  end
+
+  def test_validates_presence_of_with_custom_message_using_quotes
+    repair_validations(Developer) do
+      Developer.validates_presence_of :non_existent, :message=> "This string contains 'single' and \"double\" quotes"
+      d = Developer.new
+      d.name = "Joe"
+      assert !d.valid?
+      assert_equal ["This string contains 'single' and \"double\" quotes"], d.errors[:non_existent]
+    end
+  end
+end
diff --git a/activemodel/test/cases/validations_test.rb b/activemodel/test/cases/validations_test.rb
new file mode 100644
index 0000000000..a7269522eb
--- /dev/null
+++ b/activemodel/test/cases/validations_test.rb
@@ -0,0 +1,144 @@
+# encoding: utf-8
+require 'cases/helper'
+require 'cases/test_database'
+
+require 'models/topic'
+require 'models/reply'
+require 'models/developer'
+
+class ValidationsTest < ActiveModel::TestCase
+  include ActiveModel::TestDatabase
+  include ActiveModel::ValidationsRepairHelper
+
+  fixtures :topics, :developers
+
+  # Most of the tests mess with the validations of Topic, so lets repair it all the time.
+  # Other classes we mess with will be dealt with in the specific tests
+  repair_validations(Topic)
+
+  def test_single_field_validation
+    r = Reply.new
+    r.title = "There's no content!"
+    assert !r.valid?, "A reply without content shouldn't be saveable"
+
+    r.content = "Messa content!"
+    assert r.valid?, "A reply with content should be saveable"
+  end
+
+  def test_single_attr_validation_and_error_msg
+    r = Reply.new
+    r.title = "There's no content!"
+    assert !r.valid?
+    assert r.errors.invalid?("content"), "A reply without content should mark that attribute as invalid"
+    assert_equal ["Empty"], r.errors["content"], "A reply without content should contain an error"
+    assert_equal 1, r.errors.count
+  end
+
+  def test_double_attr_validation_and_error_msg
+    r = Reply.new
+    assert !r.valid?
+
+    assert r.errors.invalid?("title"), "A reply without title should mark that attribute as invalid"
+    assert_equal ["Empty"], r.errors["title"], "A reply without title should contain an error"
+
+    assert r.errors.invalid?("content"), "A reply without content should mark that attribute as invalid"
+    assert_equal ["Empty"], r.errors["content"], "A reply without content should contain an error"
+
+    assert_equal 2, r.errors.count
+  end
+
+  def test_single_error_per_attr_iteration
+    r = Reply.new
+    r.save
+
+    errors = []
+    r.errors.each {|attr, messages| errors << [attr.to_s, messages] }
+
+    assert errors.include?(["title", "Empty"])
+    assert errors.include?(["content", "Empty"])
+  end
+
+  def test_multiple_errors_per_attr_iteration_with_full_error_composition
+    r = Reply.new
+    r.title   = "Wrong Create"
+    r.content = "Mismatch"
+    r.save
+
+    errors = r.errors.to_a
+
+    assert_equal "Title is Wrong Create", errors[0]
+    assert_equal "Title is Content Mismatch", errors[1]
+    assert_equal 2, r.errors.count
+  end
+
+  def test_errors_on_base
+    r = Reply.new
+    r.content = "Mismatch"
+    r.save
+    r.errors.add_to_base "Reply is not dignifying"
+
+    errors = []
+    r.errors.each_full { |error| errors << error }
+
+    assert_equal "Reply is not dignifying", r.errors.on_base
+
+    assert errors.include?("Title Empty")
+    assert errors.include?("Reply is not dignifying")
+    assert_equal 2, r.errors.count
+  end
+
+  def test_validates_each
+    hits = 0
+    Topic.validates_each(:title, :content, [:title, :content]) do |record, attr|
+      record.errors.add attr, 'gotcha'
+      hits += 1
+    end
+    t = Topic.new("title" => "valid", "content" => "whatever")
+    assert !t.save
+    assert_equal 4, hits
+    assert_equal %w(gotcha gotcha), t.errors[:title]
+    assert_equal %w(gotcha gotcha), t.errors[:content]
+  end
+
+  def test_validate_block
+    Topic.validate { |topic| topic.errors.add("title", "will never be valid") }
+    t = Topic.create("title" => "Title", "content" => "whatever")
+    assert !t.valid?
+    assert t.errors[:title].any?
+    assert_equal ["will never be valid"], t.errors["title"]
+  end
+
+  def test_invalid_validator
+    Topic.validate 3
+    assert_raise(ArgumentError) { t = Topic.create }
+  end
+
+  def test_errors_to_xml
+    r = Reply.new :title => "Wrong Create"
+    assert !r.valid?
+    xml = r.errors.to_xml(:skip_instruct => true)
+    assert_equal "<errors>", xml.first(8)
+    assert xml.include?("<error>Title is Wrong Create</error>")
+    assert xml.include?("<error>Content Empty</error>")
+  end
+
+  def test_validation_order
+     Topic.validates_presence_of :title
+     Topic.validates_length_of :title, :minimum => 2
+
+     t = Topic.new("title" => "")
+     assert !t.valid?
+     assert_equal "can't be blank", t.errors["title"].first
+  end
+
+  def test_invalid_should_be_the_opposite_of_valid
+    Topic.validates_presence_of :title
+
+    t = Topic.new
+    assert t.invalid?
+    assert t.errors.invalid?(:title)
+
+    t.title = 'Things are going to change'
+    assert !t.invalid?
+  end
+end
\ No newline at end of file
diff --git a/activemodel/test/models/developer.rb b/activemodel/test/models/developer.rb
new file mode 100644
index 0000000000..a839fe1135
--- /dev/null
+++ b/activemodel/test/models/developer.rb
@@ -0,0 +1,4 @@
+class Developer < ActiveRecord::Base
+  validates_inclusion_of :salary, :in => 50000..200000
+  validates_length_of :name, :within => 3..20
+end
diff --git a/activemodel/test/models/reply.rb b/activemodel/test/models/reply.rb
new file mode 100644
index 0000000000..cfe256034c
--- /dev/null
+++ b/activemodel/test/models/reply.rb
@@ -0,0 +1,30 @@
+require 'models/topic'
+
+class Reply < Topic
+  validate :errors_on_empty_content
+  validate_on_create :title_is_wrong_create
+
+  attr_accessible :title, :author_name, :author_email_address, :written_on, :content, :last_read
+
+  def validate
+    errors[:title] << "Empty" unless attribute_present?("title")
+  end
+
+  def errors_on_empty_content
+    errors[:content] << "Empty" unless attribute_present?("content")
+  end
+
+  def validate_on_create
+    if attribute_present?("title") && attribute_present?("content") && content == "Mismatch"
+      errors[:title] << "is Content Mismatch"
+    end
+  end
+
+  def title_is_wrong_create
+    errors[:title] << "is Wrong Create" if attribute_present?("title") && title == "Wrong Create"
+  end
+
+  def validate_on_update
+    errors[:title] << "is Wrong Update" if attribute_present?("title") && title == "Wrong Update"
+  end
+end
diff --git a/activemodel/test/models/topic.rb b/activemodel/test/models/topic.rb
new file mode 100644
index 0000000000..1350aa17e7
--- /dev/null
+++ b/activemodel/test/models/topic.rb
@@ -0,0 +1,9 @@
+class Topic < ActiveRecord::Base
+  def condition_is_true
+    true
+  end
+
+  def condition_is_true_but_its_not
+    false
+  end
+end