Restore behavior of Active Record 3.2.3 scopes

A series of commits relating to preloading and scopes caused a regression.
Cloning the relation calls initialize_copy which resets a number of instance
variables to nil. Without this the scope thinks that it is already loaded
when it is called again.

Reverts the following commits:
13f1401a6cf0266a3b0a91b173f976db2d4e50f3
8491740ca5361ba9df20e1c8b906c709f5bfbc12
dffbb521a0d00c8673a3ad6e0e8ff526f32daf4e

Fixes #6575, #6576 & #6577

1 files changed, 0 insertions, 24 deletions

diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb
index d7af07f9c7..1dc71ac4cc 100644
--- a/activerecord/test/cases/associations/eager_test.rb
+++ b/activerecord/test/cases/associations/eager_test.rb
@@ -1095,28 +1095,4 @@ class EagerAssociationTest < ActiveRecord::TestCase
       Post.includes(:comments).order(nil).where(:comments => {:body => "Thank you for the welcome"}).first
     end
   end
-
-  def test_deep_including_through_habtm
-    posts = Post.find(:all, :include => {:categories => :categorizations}, :order => "posts.id, categories.id")
-    assert_no_queries { assert_equal 2, posts[0].categories[0].categorizations.length }
-    assert_no_queries { assert_equal 1, posts[0].categories[1].categorizations.length }
-    assert_no_queries { assert_equal 2, posts[1].categories[0].categorizations.length }
-  end
-
-  test "scoping with a circular preload" do
-    assert_equal Comment.find(1), Comment.preload(:post => :comments).scoping { Comment.find(1) }
-  end
-
-  test "circular preload does not modify unscoped" do
-    expected = FirstPost.unscoped.find(2)
-    FirstPost.preload(:comments => :first_post).find(1)
-    assert_equal expected, FirstPost.unscoped.find(2)
-  end
-
-  test "preload ignores the scoping" do
-    assert_equal(
-      Comment.find(1).post,
-      Post.where('1 = 0').scoping { Comment.preload(:post).find(1).post }
-    )
-  end
 end