8 files changed, 74 insertions, 8 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/quoting_test.rb b/activerecord/test/cases/adapters/postgresql/quoting_test.rb
index a534f0e56a..1122f8b9a1 100644
--- a/activerecord/test/cases/adapters/postgresql/quoting_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/quoting_test.rb
@@ -52,6 +52,11 @@ module ActiveRecord
           c = Column.new(nil, nil, 'text')
           assert_equal "'666'", @conn.quote(fixnum, c)
         end
+
+        def test_quote_time_usec
+          assert_equal "'1970-01-01 00:00:00.000000'", @conn.quote(Time.at(0))
+          assert_equal "'1970-01-01 00:00:00.000000'", @conn.quote(Time.at(0).to_datetime)
+        end
       end
     end
   end
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 941e851aae..c00cae5750 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -28,7 +28,8 @@ require 'models/club'
 class HasManyThroughAssociationsTest < ActiveRecord::TestCase
   fixtures :posts, :readers, :people, :comments, :authors, :categories, :taggings, :tags,
            :owners, :pets, :toys, :jobs, :references, :companies, :members, :author_addresses,
-           :subscribers, :books, :subscriptions, :developers, :categorizations, :essays
+           :subscribers, :books, :subscriptions, :developers, :categorizations, :essays,
+           :categories_posts
 
   # Dummies to force column loads so query counts are clean.
   def setup
@@ -36,6 +37,14 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
     Reader.create :person_id => 0, :post_id => 0
   end
 
+  def test_pk_is_not_required_for_join
+    post  = Post.includes(:scategories).first
+    post2 = Post.includes(:categories).first
+
+    assert_operator post.categories.length, :>, 0
+    assert_equal post2.categories, post.categories
+  end
+
   def test_include?
     person = Person.new
     post = Post.new
diff --git a/activerecord/test/cases/associations/nested_through_associations_test.rb b/activerecord/test/cases/associations/nested_through_associations_test.rb
index 9b1abc3b81..cf3c07845c 100644
--- a/activerecord/test/cases/associations/nested_through_associations_test.rb
+++ b/activerecord/test/cases/associations/nested_through_associations_test.rb
@@ -371,7 +371,7 @@ class NestedThroughAssociationsTest < ActiveRecord::TestCase
     prev_default_scope = Club.default_scopes
 
     [:includes, :preload, :joins, :eager_load].each do |q|
-      Club.default_scopes = [Club.send(q, :category)]
+      Club.default_scopes = [proc { Club.send(q, :category) }]
       assert_equal categories(:general), members(:groucho).reload.club_category
     end
   ensure
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index c91cf89f6d..dc2de7b523 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1324,6 +1324,35 @@ class BasicsTest < ActiveRecord::TestCase
     assert_equal 1, post.comments.length
   end
 
+  def test_marshal_between_processes
+    skip "fork isn't supported" unless Process.respond_to?(:fork)
+
+    # Define a new model to ensure there are no caches
+    if self.class.const_defined?("Post", false)
+      flunk "there should be no post constant"
+    end
+
+    self.class.const_set("Post", Class.new(ActiveRecord::Base) {
+      has_many :comments
+    })
+
+    rd, wr = IO.pipe
+
+    ActiveRecord::Base.connection_handler.clear_all_connections!
+
+    fork do
+      rd.close
+      post = Post.new
+      post.comments.build
+      wr.write Marshal.dump(post)
+      wr.close
+    end
+
+    wr.close
+    assert Marshal.load rd.read
+    rd.close
+  end
+
   def test_marshalling_new_record_round_trip_with_associations
     post = Post.new
     post.comments.build
diff --git a/activerecord/test/cases/dup_test.rb b/activerecord/test/cases/dup_test.rb
index f73e449610..1e6ccecfab 100644
--- a/activerecord/test/cases/dup_test.rb
+++ b/activerecord/test/cases/dup_test.rb
@@ -126,7 +126,7 @@ module ActiveRecord
 
     def test_dup_with_default_scope
       prev_default_scopes = Topic.default_scopes
-      Topic.default_scopes = [Topic.where(:approved => true)]
+      Topic.default_scopes = [proc { Topic.where(:approved => true) }]
       topic = Topic.new(:approved => false)
       assert !topic.dup.approved?, "should not be overridden by default scopes"
     ensure
diff --git a/activerecord/test/cases/relation_test.rb b/activerecord/test/cases/relation_test.rb
index f99801c437..a695087426 100644
--- a/activerecord/test/cases/relation_test.rb
+++ b/activerecord/test/cases/relation_test.rb
@@ -9,6 +9,10 @@ module ActiveRecord
     fixtures :posts, :comments, :authors
 
     class FakeKlass < Struct.new(:table_name, :name)
+      extend ActiveRecord::Delegation::DelegateCache
+
+      inherited self
+
       def self.connection
         Post.connection
       end
@@ -76,8 +80,8 @@ module ActiveRecord
     end
 
     def test_table_name_delegates_to_klass
-      relation = Relation.new FakeKlass.new('foo'), :b
-      assert_equal 'foo', relation.table_name
+      relation = Relation.new FakeKlass.new('posts'), :b
+      assert_equal 'posts', relation.table_name
     end
 
     def test_scope_for_create
@@ -177,8 +181,12 @@ module ActiveRecord
     end
 
     test 'merging a hash interpolates conditions' do
-      klass = stub_everything
-      klass.stubs(:sanitize_sql).with(['foo = ?', 'bar']).returns('foo = bar')
+      klass = Class.new(FakeKlass) do
+        def self.sanitize_sql(args)
+          raise unless args == ['foo = ?', 'bar']
+          'foo = bar'
+        end
+      end
 
       relation = Relation.new(klass, :b)
       relation.merge!(where: ['foo = ?', 'bar'])
@@ -210,6 +218,9 @@ module ActiveRecord
 
   class RelationMutationTest < ActiveSupport::TestCase
     class FakeKlass < Struct.new(:table_name, :name)
+      extend ActiveRecord::Delegation::DelegateCache
+      inherited self
+
       def arel_table
         Post.arel_table
       end
@@ -217,6 +228,10 @@ module ActiveRecord
       def connection
         Post.connection
       end
+
+      def relation_delegate_class(klass)
+        self.class.relation_delegate_class(klass)
+      end
     end
 
     def relation
diff --git a/activerecord/test/fixtures/tasks.yml b/activerecord/test/fixtures/tasks.yml
index 402ca85faf..c38b32b0e5 100644
--- a/activerecord/test/fixtures/tasks.yml
+++ b/activerecord/test/fixtures/tasks.yml
@@ -1,4 +1,4 @@
-# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/Fixtures.html
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
 first_task:
   id: 1
   starting: 2005-03-30t06:30:00.00+01:00
diff --git a/activerecord/test/models/post.rb b/activerecord/test/models/post.rb
index 93a7a2073c..25fb2cffe2 100644
--- a/activerecord/test/models/post.rb
+++ b/activerecord/test/models/post.rb
@@ -1,4 +1,10 @@
 class Post < ActiveRecord::Base
+  class CategoryPost < ActiveRecord::Base
+    self.table_name = "categories_posts"
+    belongs_to :category
+    belongs_to :post
+  end
+
   module NamedExtension
     def author
       'lifo'
@@ -72,6 +78,8 @@ class Post < ActiveRecord::Base
   has_many :special_comments_ratings, :through => :special_comments, :source => :ratings
   has_many :special_comments_ratings_taggings, :through => :special_comments_ratings, :source => :taggings
 
+  has_many :category_posts, :class_name => 'CategoryPost'
+  has_many :scategories, through: :category_posts, source: :category
   has_and_belongs_to_many :categories
   has_and_belongs_to_many :special_categories, :join_table => "categories_posts", :association_foreign_key => 'category_id'