Fixing test class names and refactor line in autosave association

Signed-off-by: José Valim <jose.valim@gmail.com>

activerecord/lib/active_record/autosave_association.rb

@@ -243,7 +243,7 @@ def nested_records_changed_for_autosave?
           if [:belongs_to, :has_one].include?(reflection.macro)
             return true if association.target && association.target.changed_for_autosave?
           else
-            association.target.each {|record| return true if record.changed_for_autosave? }
+            return true if association.target.detect { |record| record.changed_for_autosave? }
           end
         end
       end

activerecord/test/cases/autosave_association_test.rb

@@ -1149,7 +1149,7 @@ def setup
   include AutosaveAssociationOnACollectionAssociationTests
 end
 
-class TestAutosaveAssociationValidationsOnAHasManyAssocication < ActiveRecord::TestCase
+class TestAutosaveAssociationValidationsOnAHasManyAssociation < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup
@@ -1165,7 +1165,7 @@ def setup
   end
 end
 
-class TestAutosaveAssociationValidationsOnAHasOneAssocication < ActiveRecord::TestCase
+class TestAutosaveAssociationValidationsOnAHasOneAssociation < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup
@@ -1186,7 +1186,7 @@ def setup
   end
 end
 
-class TestAutosaveAssociationValidationsOnABelongsToAssocication < ActiveRecord::TestCase
+class TestAutosaveAssociationValidationsOnABelongsToAssociation < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup
@@ -1206,7 +1206,7 @@ def setup
   end
 end
 
-class TestAutosaveAssociationValidationsOnAHABTMAssocication < ActiveRecord::TestCase
+class TestAutosaveAssociationValidationsOnAHABTMAssociation < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup

activerecord/test/cases/nested_attributes_test.rb

@@ -734,7 +734,7 @@ def test_should_update_existing_records_with_non_standard_primary_key
   end
 end
 
-class TestHasOneAutosaveAssoictaionWhichItselfHasAutosaveAssociations < ActiveRecord::TestCase
+class TestHasOneAutosaveAssociationWhichItselfHasAutosaveAssociations < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup
@@ -774,7 +774,7 @@ def setup
   end
 end
 
-class TestHasManyAutosaveAssoictaionWhichItselfHasAutosaveAssociations < ActiveRecord::TestCase
+class TestHasManyAutosaveAssociationWhichItselfHasAutosaveAssociations < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
 
   def setup