1 files changed, 17 insertions, 4 deletions
diff --git a/activerecord/test/base_test.rb b/activerecord/test/base_test.rb
index 50e7ba9da3..3171e75bac 100755
--- a/activerecord/test/base_test.rb
+++ b/activerecord/test/base_test.rb
@@ -1154,16 +1154,29 @@ class BasicsTest < Test::Unit::TestCase
     assert_equal(myobj, topic.content)
   end
 
-  def test_serialized_attribute_with_class_constraint
+  def test_nil_serialized_attribute_with_class_constraint
     myobj = MyObject.new('value1', 'value2')
-    topic = Topic.create("content" => myobj)
-    Topic.serialize(:content, Hash)
+    topic = Topic.new
+    assert_nil topic.content
+  end
 
+  def test_should_raise_exception_on_serialized_attribute_with_type_mismatch
+    myobj = MyObject.new('value1', 'value2')
+    topic = Topic.new(:content => myobj)
+    assert topic.save
+    Topic.serialize(:content, Hash)
     assert_raise(ActiveRecord::SerializationTypeMismatch) { Topic.find(topic.id).content }
+  ensure
+    Topic.serialize(:content)
+  end
 
+  def test_serialized_attribute_with_class_constraint
     settings = { "color" => "blue" }
-    Topic.find(topic.id).update_attribute("content", settings)
+    Topic.serialize(:content, Hash)
+    topic = Topic.new(:content => settings)
+    assert topic.save
     assert_equal(settings, Topic.find(topic.id).content)
+  ensure
     Topic.serialize(:content)
   end