Merge branch 'master' into nested_has_many_through

Conflicts:
	activerecord/CHANGELOG
	activerecord/lib/active_record/associations.rb

21 files changed, 508 insertions, 79 deletions

diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb
index 10fb80f822..1c740c4660 100644
--- a/activerecord/test/cases/associations/eager_test.rb
+++ b/activerecord/test/cases/associations/eager_test.rb
@@ -79,6 +79,58 @@ class EagerAssociationTest < ActiveRecord::TestCase
     end
   end
 
+  def test_preloading_has_many_in_multiple_queries_with_more_ids_than_database_can_handle
+    Post.connection.expects(:in_clause_length).at_least_once.returns(5)
+    posts = Post.find(:all, :include=>:comments)
+    assert_equal 11, posts.size
+  end
+
+  def test_preloading_has_many_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle
+    Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
+    posts = Post.find(:all, :include=>:comments)
+    assert_equal 11, posts.size
+  end
+
+  def test_preloading_habtm_in_multiple_queries_with_more_ids_than_database_can_handle
+    Post.connection.expects(:in_clause_length).at_least_once.returns(5)
+    posts = Post.find(:all, :include=>:categories)
+    assert_equal 11, posts.size
+  end
+
+  def test_preloading_habtm_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle
+    Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
+    posts = Post.find(:all, :include=>:categories)
+    assert_equal 11, posts.size
+  end
+
+  def test_load_associated_records_in_one_query_when_adapter_has_no_limit
+    Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
+    Post.expects(:i_was_called).with([1,2,3,4,5,6,7]).returns([1])
+    associated_records = Post.send(:associated_records, [1,2,3,4,5,6,7]) do |some_ids|
+      Post.i_was_called(some_ids)
+    end
+    assert_equal [1], associated_records
+  end
+
+  def test_load_associated_records_in_several_queries_when_many_ids_passed
+    Post.connection.expects(:in_clause_length).at_least_once.returns(5)
+    Post.expects(:i_was_called).with([1,2,3,4,5]).returns([1])
+    Post.expects(:i_was_called).with([6,7]).returns([6])
+    associated_records = Post.send(:associated_records, [1,2,3,4,5,6,7]) do |some_ids|
+      Post.i_was_called(some_ids)
+    end
+    assert_equal [1,6], associated_records
+  end
+
+  def test_load_associated_records_in_one_query_when_a_few_ids_passed
+    Post.connection.expects(:in_clause_length).at_least_once.returns(5)
+    Post.expects(:i_was_called).with([1,2,3]).returns([1])
+    associated_records = Post.send(:associated_records, [1,2,3]) do |some_ids|
+      Post.i_was_called(some_ids)
+    end
+    assert_equal [1], associated_records
+  end
+
   def test_including_duplicate_objects_from_belongs_to
     popular_post = Post.create!(:title => 'foo', :body => "I like cars!")
     comment = popular_post.comments.create!(:body => "lol")
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index 33c53e695b..fb772bb8e6 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -67,8 +67,7 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
   end
 
   def test_no_sql_should_be_fired_if_association_already_loaded
-    car = Car.create(:name => 'honda')
-    bulb = car.bulbs.create
+    Car.create(:name => 'honda')
     bulbs = Car.first.bulbs
     bulbs.inspect # to load all instances of bulbs
     assert_no_queries do
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index 7c3d20e8bd..5fac52257c 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -358,7 +358,6 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
   end
 
   def test_has_many_association_through_a_belongs_to_association_where_the_association_doesnt_exist
-    author = authors(:mary)
     post = Post.create!(:title => "TITLE", :body => "BODY")
     assert_equal [], post.author_favorites
   end
diff --git a/activerecord/test/cases/associations/has_one_associations_test.rb b/activerecord/test/cases/associations/has_one_associations_test.rb
index 6fbeff8aa9..64449df8f5 100644
--- a/activerecord/test/cases/associations/has_one_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_associations_test.rb
@@ -163,7 +163,6 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
 
     firm = ExclusivelyDependentFirm.find(9)
     assert_not_nil firm.account
-    account_id = firm.account.id
     assert_equal [], Account.destroyed_account_ids[firm.id]
 
     firm.destroy
@@ -180,7 +179,7 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
   def test_dependence_with_restrict
     firm = RestrictedFirm.new(:name => 'restrict')
     firm.save!
-    account = firm.create_account(:credit_limit => 10)
+    firm.create_account(:credit_limit => 10)
     assert_not_nil firm.account
     assert_raise(ActiveRecord::DeleteRestrictionError) { firm.destroy }
   end
@@ -197,8 +196,8 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
   def test_build_association_twice_without_saving_affects_nothing
     count_of_account = Account.count
     firm = Firm.find(:first)
-    account1 = firm.build_account("credit_limit" => 1000)
-    account2 = firm.build_account("credit_limit" => 2000)
+    firm.build_account("credit_limit" => 1000)
+    firm.build_account("credit_limit" => 2000)
 
     assert_equal count_of_account, Account.count
   end
diff --git a/activerecord/test/cases/associations/inverse_associations_test.rb b/activerecord/test/cases/associations/inverse_associations_test.rb
index 081583038f..0491b2d1fa 100644
--- a/activerecord/test/cases/associations/inverse_associations_test.rb
+++ b/activerecord/test/cases/associations/inverse_associations_test.rb
@@ -484,7 +484,6 @@ class InversePolymorphicBelongsToTests < ActiveRecord::TestCase
 
   def test_child_instance_should_be_shared_with_replaced_via_accessor_parent
     face = faces(:confused)
-    old_man = face.polymorphic_man
     new_man = Man.new
 
     assert_not_nil face.polymorphic_man
@@ -499,7 +498,6 @@ class InversePolymorphicBelongsToTests < ActiveRecord::TestCase
 
   def test_child_instance_should_be_shared_with_replaced_via_method_parent
     face = faces(:confused)
-    old_man = face.polymorphic_man
     new_man = Man.new
 
     assert_not_nil face.polymorphic_man
diff --git a/activerecord/test/cases/associations/join_model_test.rb b/activerecord/test/cases/associations/join_model_test.rb
index 217d06f3d9..9964b826d4 100644
--- a/activerecord/test/cases/associations/join_model_test.rb
+++ b/activerecord/test/cases/associations/join_model_test.rb
@@ -634,7 +634,7 @@ class AssociationsJoinModelTest < ActiveRecord::TestCase
 
   def test_preload_nil_polymorphic_belongs_to
     assert_nothing_raised do
-      taggings = Tagging.find(:all, :include => :taggable, :conditions => ['taggable_type IS NULL'])
+      Tagging.find(:all, :include => :taggable, :conditions => ['taggable_type IS NULL'])
     end
   end
 
diff --git a/activerecord/test/cases/associations_test.rb b/activerecord/test/cases/associations_test.rb
index 93a51d3606..83c605d2bb 100644
--- a/activerecord/test/cases/associations_test.rb
+++ b/activerecord/test/cases/associations_test.rb
@@ -270,17 +270,17 @@ class OverridingAssociationsTest < ActiveRecord::TestCase
 
   def test_habtm_association_redefinition_callbacks_should_differ_and_not_inherited
     # redeclared association on AR descendant should not inherit callbacks from superclass
-    callbacks = PeopleList.read_inheritable_attribute(:before_add_for_has_and_belongs_to_many)
+    callbacks = PeopleList.before_add_for_has_and_belongs_to_many
     assert_equal([:enlist], callbacks)
-    callbacks = DifferentPeopleList.read_inheritable_attribute(:before_add_for_has_and_belongs_to_many)
+    callbacks = DifferentPeopleList.before_add_for_has_and_belongs_to_many
     assert_equal([], callbacks)
   end
 
   def test_has_many_association_redefinition_callbacks_should_differ_and_not_inherited
     # redeclared association on AR descendant should not inherit callbacks from superclass
-    callbacks = PeopleList.read_inheritable_attribute(:before_add_for_has_many)
+    callbacks = PeopleList.before_add_for_has_many
     assert_equal([:enlist], callbacks)
-    callbacks = DifferentPeopleList.read_inheritable_attribute(:before_add_for_has_many)
+    callbacks = DifferentPeopleList.before_add_for_has_many
     assert_equal([], callbacks)
   end
 
diff --git a/activerecord/test/cases/autosave_association_test.rb b/activerecord/test/cases/autosave_association_test.rb
index b13cb2d7a2..fbf7121468 100644
--- a/activerecord/test/cases/autosave_association_test.rb
+++ b/activerecord/test/cases/autosave_association_test.rb
@@ -163,15 +163,15 @@ class TestDefaultAutosaveAssociationOnAHasOneAssociation < ActiveRecord::TestCas
     firm.account = Account.find(:first)
     assert_queries(Firm.partial_updates? ? 0 : 1) { firm.save! }
 
-    firm = Firm.find(:first).clone
+    firm = Firm.find(:first).dup
     firm.account = Account.find(:first)
     assert_queries(2) { firm.save! }
 
-    firm = Firm.find(:first).clone
-    firm.account = Account.find(:first).clone
+    firm = Firm.find(:first).dup
+    firm.account = Account.find(:first).dup
     assert_queries(2) { firm.save! }
   end
-  
+
   def test_callbacks_firing_order_on_create
     eye = Eye.create(:iris_attributes => {:color => 'honey'})
     assert_equal [true, false], eye.after_create_callbacks_stack
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 26f388ca46..c3ba1f0c35 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -669,64 +669,65 @@ class BasicsTest < ActiveRecord::TestCase
     assert_equal true, Topic.find(1).persisted?
   end
 
-  def test_clone
+  def test_dup
     topic = Topic.find(1)
-    cloned_topic = nil
-    assert_nothing_raised { cloned_topic = topic.clone }
-    assert_equal topic.title, cloned_topic.title
-    assert !cloned_topic.persisted?
+    duped_topic = nil
+    assert_nothing_raised { duped_topic = topic.dup }
+    assert_equal topic.title, duped_topic.title
+    assert !duped_topic.persisted?
 
-    # test if the attributes have been cloned
+    # test if the attributes have been duped
     topic.title = "a"
-    cloned_topic.title = "b"
+    duped_topic.title = "b"
     assert_equal "a", topic.title
-    assert_equal "b", cloned_topic.title
+    assert_equal "b", duped_topic.title
 
-    # test if the attribute values have been cloned
+    # test if the attribute values have been duped
     topic.title = {"a" => "b"}
-    cloned_topic = topic.clone
-    cloned_topic.title["a"] = "c"
+    duped_topic = topic.dup
+    duped_topic.title["a"] = "c"
     assert_equal "b", topic.title["a"]
 
-    # test if attributes set as part of after_initialize are cloned correctly
-    assert_equal topic.author_email_address, cloned_topic.author_email_address
+    # test if attributes set as part of after_initialize are duped correctly
+    assert_equal topic.author_email_address, duped_topic.author_email_address
 
     # test if saved clone object differs from original
-    cloned_topic.save
-    assert cloned_topic.persisted?
-    assert_not_equal cloned_topic.id, topic.id
+    duped_topic.save
+    assert duped_topic.persisted?
+    assert_not_equal duped_topic.id, topic.id
 
-    cloned_topic.reload
+    duped_topic.reload
     # FIXME: I think this is poor behavior, and will fix it with #5686
-    assert_equal({'a' => 'c'}.to_s, cloned_topic.title)
+    assert_equal({'a' => 'c'}.to_s, duped_topic.title)
   end
 
-  def test_clone_with_aggregate_of_same_name_as_attribute
+  def test_dup_with_aggregate_of_same_name_as_attribute
     dev = DeveloperWithAggregate.find(1)
     assert_kind_of DeveloperSalary, dev.salary
 
-    clone = nil
-    assert_nothing_raised { clone = dev.clone }
-    assert_kind_of DeveloperSalary, clone.salary
-    assert_equal dev.salary.amount, clone.salary.amount
-    assert !clone.persisted?
+    dup = nil
+    assert_nothing_raised { dup = dev.dup }
+    assert_kind_of DeveloperSalary, dup.salary
+    assert_equal dev.salary.amount, dup.salary.amount
+    assert !dup.persisted?
 
-    # test if the attributes have been cloned
-    original_amount = clone.salary.amount
+    # test if the attributes have been dupd
+    original_amount = dup.salary.amount
     dev.salary.amount = 1
-    assert_equal original_amount, clone.salary.amount
+    assert_equal original_amount, dup.salary.amount
 
-    assert clone.save
-    assert clone.persisted?
-    assert_not_equal clone.id, dev.id
+    assert dup.save
+    assert dup.persisted?
+    assert_not_equal dup.id, dev.id
   end
 
-  def test_clone_does_not_clone_associations
+  def test_dup_does_not_copy_associations
     author = authors(:david)
     assert_not_equal [], author.posts
+    author.send(:clear_association_cache)
 
-    author_clone = author.clone
-    assert_equal [], author_clone.posts
+    author_dup = author.dup
+    assert_equal [], author_dup.posts
   end
 
   def test_clone_preserves_subtype
@@ -765,22 +766,22 @@ class BasicsTest < ActiveRecord::TestCase
     assert !cloned_developer.salary_changed?  # ... and cloned instance should behave same
   end
 
-  def test_clone_of_saved_object_marks_attributes_as_dirty
+  def test_dup_of_saved_object_marks_attributes_as_dirty
     developer = Developer.create! :name => 'Bjorn', :salary => 100000
     assert !developer.name_changed?
     assert !developer.salary_changed?
 
-    cloned_developer = developer.clone
+    cloned_developer = developer.dup
     assert cloned_developer.name_changed?     # both attributes differ from defaults
     assert cloned_developer.salary_changed?
   end
 
-  def test_clone_of_saved_object_marks_as_dirty_only_changed_attributes
+  def test_dup_of_saved_object_marks_as_dirty_only_changed_attributes
     developer = Developer.create! :name => 'Bjorn'
     assert !developer.name_changed?           # both attributes of saved object should be threated as not changed
     assert !developer.salary_changed?
 
-    cloned_developer = developer.clone
+    cloned_developer = developer.dup
     assert cloned_developer.name_changed?     # ... but on cloned object should be
     assert !cloned_developer.salary_changed?  # ... BUT salary has non-nil default which should be threated as not changed on cloned instance
   end
@@ -1443,10 +1444,6 @@ class BasicsTest < ActiveRecord::TestCase
     ActiveRecord::Base.logger = original_logger
   end
 
-  def test_dup
-    assert !Minimalistic.new.freeze.dup.frozen?
-  end
-
   def test_compute_type_success
     assert_equal Author, ActiveRecord::Base.send(:compute_type, 'Author')
   end
diff --git a/activerecord/test/cases/clone_test.rb b/activerecord/test/cases/clone_test.rb
new file mode 100644
index 0000000000..d91646efca
--- /dev/null
+++ b/activerecord/test/cases/clone_test.rb
@@ -0,0 +1,33 @@
+require "cases/helper"
+require 'models/topic'
+
+module ActiveRecord
+  class CloneTest < ActiveRecord::TestCase
+    fixtures :topics
+
+    def test_persisted
+      topic = Topic.first
+      cloned = topic.clone
+      assert topic.persisted?, 'topic persisted'
+      assert cloned.persisted?, 'topic persisted'
+      assert !cloned.new_record?, 'topic is not new'
+    end
+
+    def test_stays_frozen
+      topic = Topic.first
+      topic.freeze
+
+      cloned = topic.clone
+      assert cloned.persisted?, 'topic persisted'
+      assert !cloned.new_record?, 'topic is not new'
+      assert cloned.frozen?, 'topic should be frozen'
+    end
+
+    def test_shallow
+      topic = Topic.first
+      cloned = topic.clone
+      topic.author_name = 'Aaron'
+      assert_equal 'Aaron', cloned.author_name
+    end
+  end
+end
diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb
index b1a54af192..a6738fb654 100644
--- a/activerecord/test/cases/dirty_test.rb
+++ b/activerecord/test/cases/dirty_test.rb
@@ -338,13 +338,13 @@ class DirtyTest < ActiveRecord::TestCase
     assert !pirate.changed?
   end
 
-  def test_cloned_objects_should_not_copy_dirty_flag_from_creator
+  def test_dup_objects_should_not_copy_dirty_flag_from_creator
     pirate = Pirate.create!(:catchphrase => "shiver me timbers")
-    pirate_clone = pirate.clone
-    pirate_clone.reset_catchphrase!
+    pirate_dup = pirate.dup
+    pirate_dup.reset_catchphrase!
     pirate.catchphrase = "I love Rum"
     assert pirate.catchphrase_changed?
-    assert !pirate_clone.catchphrase_changed?
+    assert !pirate_dup.catchphrase_changed?
   end
 
   def test_reverted_changes_are_not_dirty
diff --git a/activerecord/test/cases/dup_test.rb b/activerecord/test/cases/dup_test.rb
new file mode 100644
index 0000000000..0236f9b0a1
--- /dev/null
+++ b/activerecord/test/cases/dup_test.rb
@@ -0,0 +1,103 @@
+require "cases/helper"
+require 'models/topic'
+
+module ActiveRecord
+  class DupTest < ActiveRecord::TestCase
+    fixtures :topics
+
+    def test_dup
+      assert !Topic.new.freeze.dup.frozen?
+    end
+
+    def test_not_readonly
+      topic = Topic.first
+
+      duped = topic.dup
+      assert !duped.readonly?, 'should not be readonly'
+    end
+
+    def test_is_readonly
+      topic = Topic.first
+      topic.readonly!
+
+      duped = topic.dup
+      assert duped.readonly?, 'should be readonly'
+    end
+
+    def test_dup_not_persisted
+      topic = Topic.first
+      duped = topic.dup
+
+      assert !duped.persisted?, 'topic not persisted'
+      assert duped.new_record?, 'topic is new'
+    end
+
+    def test_dup_has_no_id
+      topic = Topic.first
+      duped = topic.dup
+      assert_nil duped.id
+    end
+
+    def test_dup_with_modified_attributes
+      topic = Topic.first
+      topic.author_name = 'Aaron'
+      duped = topic.dup
+      assert_equal 'Aaron', duped.author_name
+    end
+
+    def test_dup_with_changes
+      dbtopic = Topic.first
+      topic = Topic.new
+
+      topic.attributes = dbtopic.attributes
+
+      #duped has no timestamp values
+      duped = dbtopic.dup
+
+      #clear topic timestamp values
+      topic.send(:clear_timestamp_attributes)
+
+      assert_equal topic.changes, duped.changes
+    end
+
+    def test_dup_topics_are_independent
+      topic = Topic.first
+      topic.author_name = 'Aaron'
+      duped = topic.dup
+
+      duped.author_name = 'meow'
+
+      assert_not_equal topic.changes, duped.changes
+    end
+
+    def test_dup_attributes_are_independent
+      topic = Topic.first
+      duped = topic.dup
+
+      duped.author_name = 'meow'
+      topic.author_name = 'Aaron'
+
+      assert_equal 'Aaron', topic.author_name
+      assert_equal 'meow', duped.author_name
+    end
+
+    def test_dup_timestamps_are_cleared
+      topic = Topic.first
+      assert_not_nil topic.updated_at
+      assert_not_nil topic.created_at
+
+      # temporary change to the topic object
+      topic.updated_at -= 3.days
+
+      #dup should not preserve the timestamps if present
+      new_topic = topic.dup
+      assert_nil new_topic.updated_at
+      assert_nil new_topic.created_at
+
+      new_topic.save
+      assert_not_nil new_topic.updated_at
+      assert_not_nil new_topic.created_at
+    end
+
+  end
+end
diff --git a/activerecord/test/cases/helper.rb b/activerecord/test/cases/helper.rb
index 52f26b71f5..f9bbc5299b 100644
--- a/activerecord/test/cases/helper.rb
+++ b/activerecord/test/cases/helper.rb
@@ -13,11 +13,6 @@ require 'active_record'
 require 'active_support/dependencies'
 require 'connection'
 
-begin
-  require 'ruby-debug'
-rescue LoadError
-end
-
 # Show backtraces for deprecated behavior for quicker cleanup.
 ActiveSupport::Deprecation.debug = true
 
diff --git a/activerecord/test/cases/inheritance_test.rb b/activerecord/test/cases/inheritance_test.rb
index 31679b2efe..c3da9cdf53 100644
--- a/activerecord/test/cases/inheritance_test.rb
+++ b/activerecord/test/cases/inheritance_test.rb
@@ -16,7 +16,7 @@ class InheritanceTest < ActiveRecord::TestCase
 
   def test_class_with_blank_sti_name
     company = Company.find(:first)
-    company = company.clone
+    company = company.dup
     company.extend(Module.new {
       def read_attribute(name)
         return '  ' if name == 'type'
diff --git a/activerecord/test/cases/invertible_migration_test.rb b/activerecord/test/cases/invertible_migration_test.rb
new file mode 100644
index 0000000000..afec64750e
--- /dev/null
+++ b/activerecord/test/cases/invertible_migration_test.rb
@@ -0,0 +1,57 @@
+require "cases/helper"
+
+module ActiveRecord
+  class InvertibleMigrationTest < ActiveRecord::TestCase
+    class SilentMigration < ActiveRecord::Migration
+      def write(text = '')
+        # sssshhhhh!!
+      end
+    end
+
+    class InvertibleMigration < SilentMigration
+      def change
+        create_table("horses") do |t|
+          t.column :content, :text
+          t.column :remind_at, :datetime
+        end
+      end
+    end
+
+    class NonInvertibleMigration < SilentMigration
+      def change
+        create_table("horses") do |t|
+          t.column :content, :text
+          t.column :remind_at, :datetime
+        end
+        remove_column "horses", :content
+      end
+    end
+
+    def teardown
+      if ActiveRecord::Base.connection.table_exists?("horses")
+        ActiveRecord::Base.connection.drop_table("horses")
+      end
+    end
+
+    def test_no_reverse
+      migration = NonInvertibleMigration.new
+      migration.migrate(:up)
+      assert_raises(IrreversibleMigration) do
+        migration.migrate(:down)
+      end
+    end
+
+    def test_up
+      migration = InvertibleMigration.new
+      migration.migrate(:up)
+      assert migration.connection.table_exists?("horses"), "horses should exist"
+    end
+
+    def test_down
+      migration = InvertibleMigration.new
+      migration.migrate :up
+      migration.migrate :down
+      assert !migration.connection.table_exists?("horses")
+    end
+  end
+end
diff --git a/activerecord/test/cases/locking_test.rb b/activerecord/test/cases/locking_test.rb
index 4ddcdc010b..f9678cb0c5 100644
--- a/activerecord/test/cases/locking_test.rb
+++ b/activerecord/test/cases/locking_test.rb
@@ -1,3 +1,4 @@
+require 'thread'
 require "cases/helper"
 require 'models/person'
 require 'models/reader'
diff --git a/activerecord/test/cases/migration/command_recorder_test.rb b/activerecord/test/cases/migration/command_recorder_test.rb
new file mode 100644
index 0000000000..ea2292dda5
--- /dev/null
+++ b/activerecord/test/cases/migration/command_recorder_test.rb
@@ -0,0 +1,108 @@
+require "cases/helper"
+
+module ActiveRecord
+  class Migration
+    class CommandRecorderTest < ActiveRecord::TestCase
+      def setup
+        @recorder = CommandRecorder.new
+      end
+
+      def test_respond_to_delegates
+        recorder = CommandRecorder.new(Class.new {
+          def america; end
+        }.new)
+        assert recorder.respond_to?(:america)
+      end
+
+      def test_send_calls_super
+        assert_raises(NoMethodError) do
+          @recorder.send(:create_table, :horses)
+        end
+      end
+
+      def test_send_delegates_to_record
+        recorder = CommandRecorder.new(Class.new {
+          def create_table(name); end
+        }.new)
+        assert recorder.respond_to?(:create_table), 'respond_to? create_table'
+        recorder.send(:create_table, :horses)
+        assert_equal [[:create_table, [:horses]]], recorder.commands
+      end
+
+      def test_unknown_commands_raise_exception
+        @recorder.record :execute, ['some sql']
+        assert_raises(ActiveRecord::IrreversibleMigration) do
+          @recorder.inverse
+        end
+      end
+
+      def test_record
+        @recorder.record :create_table, [:system_settings]
+        assert_equal 1, @recorder.commands.length
+      end
+
+      def test_inverse
+        @recorder.record :create_table, [:system_settings]
+        assert_equal 1, @recorder.inverse.length
+
+        @recorder.record :rename_table, [:old, :new]
+        assert_equal 2, @recorder.inverse.length
+      end
+
+      def test_inverted_commands_are_reveresed
+        @recorder.record :create_table, [:hello]
+        @recorder.record :create_table, [:world]
+        tables = @recorder.inverse.map(&:last)
+        assert_equal [[:world], [:hello]], tables
+      end
+
+      def test_invert_create_table
+        @recorder.record :create_table, [:system_settings]
+        drop_table = @recorder.inverse.first
+        assert_equal [:drop_table, [:system_settings]], drop_table
+      end
+
+      def test_invert_rename_table
+        @recorder.record :rename_table, [:old, :new]
+        rename = @recorder.inverse.first
+        assert_equal [:rename_table, [:new, :old]], rename
+      end
+
+      def test_invert_add_column
+        @recorder.record :add_column, [:table, :column, :type, {}]
+        remove = @recorder.inverse.first
+        assert_equal [:remove_column, [:table, :column]], remove
+      end
+
+      def test_invert_rename_column
+        @recorder.record :rename_column, [:table, :old, :new]
+        rename = @recorder.inverse.first
+        assert_equal [:rename_column, [:table, :new, :old]], rename
+      end
+
+      def test_invert_add_index
+        @recorder.record :add_index, [:table, [:one, :two], {:options => true}]
+        remove = @recorder.inverse.first
+        assert_equal [:remove_index, [:table, {:column => [:one, :two]}]], remove
+      end
+
+      def test_invert_rename_index
+        @recorder.record :rename_index, [:old, :new]
+        rename = @recorder.inverse.first
+        assert_equal [:rename_index, [:new, :old]], rename
+      end
+
+      def test_invert_add_timestamps
+        @recorder.record :add_timestamps, [:table]
+        remove = @recorder.inverse.first
+        assert_equal [:remove_timestamps, [:table]], remove
+      end
+
+      def test_invert_remove_timestamps
+        @recorder.record :remove_timestamps, [:table]
+        add = @recorder.inverse.first
+        assert_equal [:add_timestamps, [:table]], add
+      end
+    end
+  end
+end
diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index ab9b35172b..3037d73a1b 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -18,10 +18,11 @@ if ActiveRecord::Base.connection.supports_migrations?
   class ActiveRecord::Migration
     class <<self
       attr_accessor :message_count
-      def puts(text="")
-        self.message_count ||= 0
-        self.message_count += 1
-      end
+    end
+
+    def puts(text="")
+      self.class.message_count ||= 0
+      self.class.message_count += 1
     end
   end
 
@@ -1165,6 +1166,44 @@ if ActiveRecord::Base.connection.supports_migrations?
       assert_raise(ActiveRecord::StatementInvalid) { Reminder.find(:first) }
     end
 
+    class MockMigration < ActiveRecord::Migration
+      attr_reader :went_up, :went_down
+      def initialize
+        @went_up   = false
+        @went_down = false
+      end
+
+      def up
+        @went_up = true
+        super
+      end
+
+      def down
+        @went_down = true
+        super
+      end
+    end
+
+    def test_instance_based_migration_up
+      migration = MockMigration.new
+      assert !migration.went_up, 'have not gone up'
+      assert !migration.went_down, 'have not gone down'
+
+      migration.migrate :up
+      assert migration.went_up, 'have gone up'
+      assert !migration.went_down, 'have not gone down'
+    end
+
+    def test_instance_based_migration_down
+      migration = MockMigration.new
+      assert !migration.went_up, 'have not gone up'
+      assert !migration.went_down, 'have not gone down'
+
+      migration.migrate :down
+      assert !migration.went_up, 'have gone up'
+      assert migration.went_down, 'have not gone down'
+    end
+
     def test_migrator_one_up
       assert !Person.column_methods_hash.include?(:last_name)
       assert !Reminder.table_exists?
@@ -1312,20 +1351,20 @@ if ActiveRecord::Base.connection.supports_migrations?
 
     def test_migrator_verbosity
       ActiveRecord::Migrator.up(MIGRATIONS_ROOT + "/valid", 1)
-      assert PeopleHaveLastNames.message_count > 0
+      assert_operator PeopleHaveLastNames.message_count, :>, 0
       PeopleHaveLastNames.message_count = 0
 
       ActiveRecord::Migrator.down(MIGRATIONS_ROOT + "/valid", 0)
-      assert PeopleHaveLastNames.message_count > 0
+      assert_operator PeopleHaveLastNames.message_count, :>, 0
       PeopleHaveLastNames.message_count = 0
     end
 
     def test_migrator_verbosity_off
       PeopleHaveLastNames.verbose = false
       ActiveRecord::Migrator.up(MIGRATIONS_ROOT + "/valid", 1)
-      assert PeopleHaveLastNames.message_count.zero?
+      assert_equal 0, PeopleHaveLastNames.message_count
       ActiveRecord::Migrator.down(MIGRATIONS_ROOT + "/valid", 0)
-      assert PeopleHaveLastNames.message_count.zero?
+      assert_equal 0, PeopleHaveLastNames.message_count
     end
 
     def test_migrator_going_down_due_to_version_target
diff --git a/activerecord/test/cases/nested_attributes_test.rb b/activerecord/test/cases/nested_attributes_test.rb
index 92af53d56f..fb6a239545 100644
--- a/activerecord/test/cases/nested_attributes_test.rb
+++ b/activerecord/test/cases/nested_attributes_test.rb
@@ -827,7 +827,7 @@ class TestNestedAttributesWithNonStandardPrimaryKeys < ActiveRecord::TestCase
   fixtures :owners, :pets
 
   def setup
-    Owner.accepts_nested_attributes_for :pets
+    Owner.accepts_nested_attributes_for :pets, :allow_destroy => true
 
     @owner = owners(:ashley)
     @pet1, @pet2 = pets(:chew), pets(:mochi)
@@ -844,6 +844,19 @@ class TestNestedAttributesWithNonStandardPrimaryKeys < ActiveRecord::TestCase
     @owner.update_attributes(@params)
     assert_equal ['Foo', 'Bar'], @owner.pets.map(&:name)
   end
+
+  def test_attr_accessor_of_child_should_be_value_provided_during_update_attributes
+    @owner = owners(:ashley)
+    @pet1 = pets(:chew)
+    assert_equal nil, $current_user
+    attributes = {:pets_attributes => { "1"=> { :id => @pet1.id,
+                                                :name => "Foo2",
+                                                :current_user => "John",
+                                                :_destroy=>true }}}
+    @owner.update_attributes(attributes)
+    assert_equal 'John', $after_destroy_callback_output
+  end
+
 end
 
 class TestHasOneAutosaveAssociationWhichItselfHasAutosaveAssociations < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index 7de7b95fa8..688fc70484 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -14,11 +14,18 @@ require 'models/bird'
 require 'models/car'
 require 'models/engine'
 require 'models/tyre'
+require 'models/minivan'
 
 
 class RelationTest < ActiveRecord::TestCase
   fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments,
-    :tags, :taggings, :cars
+    :tags, :taggings, :cars, :minivans
+
+  def test_do_not_double_quote_string_id
+    van = Minivan.last
+    assert van
+    assert_equal van.id, Minivan.where(:minivan_id => van).to_a.first.minivan_id
+  end
 
   def test_bind_values
     relation = Post.scoped
@@ -451,6 +458,27 @@ class RelationTest < ActiveRecord::TestCase
     assert_equal author, authors
   end
 
+  def test_find_all_using_where_twice_should_or_the_relation
+    david = authors(:david)
+    relation = Author.unscoped
+    relation = relation.where(:name => david.name)
+    relation = relation.where(:name => 'Santiago')
+    relation = relation.where(:id => david.id)
+    assert_equal [david], relation.all
+  end
+
+  def test_find_all_with_multiple_ors
+    david = authors(:david)
+    relation = [
+      { :name => david.name },
+      { :name => 'Santiago' },
+      { :name => 'tenderlove' },
+    ].inject(Author.unscoped) do |memo, param|
+      memo.where(param)
+    end
+    assert_equal [david], relation.all
+  end
+
   def test_exists
     davids = Author.where(:name => 'David')
     assert davids.exists?
diff --git a/activerecord/test/models/pet.rb b/activerecord/test/models/pet.rb
index a8bf94dd86..570db4c8d5 100644
--- a/activerecord/test/models/pet.rb
+++ b/activerecord/test/models/pet.rb
@@ -1,5 +1,13 @@
 class Pet < ActiveRecord::Base
+
+  attr_accessor :current_user
+
   set_primary_key :pet_id
   belongs_to :owner, :touch => true
   has_many :toys
+
+  after_destroy do |record|
+    $after_destroy_callback_output = record.current_user
+  end
+
 end