Merge branch 'master' into nested_has_many_through

Conflicts:
	activerecord/CHANGELOG
	activerecord/lib/active_record/association_preload.rb
	activerecord/lib/active_record/associations.rb
	activerecord/lib/active_record/associations/class_methods/join_dependency.rb
	activerecord/lib/active_record/associations/class_methods/join_dependency/join_association.rb
	activerecord/lib/active_record/associations/has_many_association.rb
	activerecord/lib/active_record/associations/has_many_through_association.rb
	activerecord/lib/active_record/associations/has_one_association.rb
	activerecord/lib/active_record/associations/has_one_through_association.rb
	activerecord/lib/active_record/associations/through_association_scope.rb
	activerecord/lib/active_record/reflection.rb
	activerecord/test/cases/associations/has_many_through_associations_test.rb
	activerecord/test/cases/associations/has_one_through_associations_test.rb
	activerecord/test/cases/reflection_test.rb
	activerecord/test/cases/relations_test.rb
	activerecord/test/fixtures/memberships.yml
	activerecord/test/models/categorization.rb
	activerecord/test/models/category.rb
	activerecord/test/models/member.rb
	activerecord/test/models/reference.rb
	activerecord/test/models/tagging.rb

1 files changed, 22 insertions, 0 deletions

diff --git a/activesupport/test/safe_buffer_test.rb b/activesupport/test/safe_buffer_test.rb
index bf61f9e58c..a4e2acbb32 100644
--- a/activesupport/test/safe_buffer_test.rb
+++ b/activesupport/test/safe_buffer_test.rb
@@ -1,4 +1,10 @@
 require 'abstract_unit'
+begin
+  require 'psych'
+rescue LoadError
+end
+
+require 'yaml'
 
 class SafeBufferTest < ActiveSupport::TestCase
   def setup
@@ -38,4 +44,20 @@ class SafeBufferTest < ActiveSupport::TestCase
     new_buffer = @buffer.to_s
     assert_equal ActiveSupport::SafeBuffer, new_buffer.class
   end
+
+  def test_to_yaml
+    str  = 'hello!'
+    buf  = ActiveSupport::SafeBuffer.new str
+    yaml = buf.to_yaml
+
+    assert_match(/^--- #{str}/, yaml)
+    assert_equal 'hello!', YAML.load(yaml)
+  end
+
+  def test_nested
+    str  = 'hello!'
+    data = { 'str' => ActiveSupport::SafeBuffer.new(str) }
+    yaml = YAML.dump data
+    assert_equal({'str' => str}, YAML.load(yaml))
+  end
 end