1 files changed, 27 insertions, 0 deletions
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 5cbc52732b..68adeff882 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1002,6 +1002,25 @@ class BasicsTest < ActiveRecord::TestCase
     Topic.serialize(:content)
   end
 
+  def test_serialized_default_class
+    Topic.serialize(:content, Hash)
+    topic = Topic.new
+    assert_equal Hash, topic.content.class
+    assert_equal Hash, topic.read_attribute(:content).class
+    topic.content["beer"] = "MadridRb"
+    assert topic.save
+    topic.reload
+    assert_equal Hash, topic.content.class
+    assert_equal "MadridRb", topic.content["beer"]
+  ensure
+    Topic.serialize(:content)
+  end
+
+  def test_serialized_no_default_class_for_object
+    topic = Topic.new
+    assert_nil topic.content
+  end
+
   def test_serialized_boolean_value_true
     Topic.serialize(:content)
     topic = Topic.new(:content => true)
@@ -1534,6 +1553,14 @@ class BasicsTest < ActiveRecord::TestCase
     end
   end
 
+  def test_clear_cache!
+    # preheat cache
+    c1 = Post.columns
+    ActiveRecord::Base.clear_cache!
+    c2 = Post.columns
+    assert_not_equal c1, c2
+  end
+
   def test_default_scope_is_reset
     Object.const_set :UnloadablePost, Class.new(ActiveRecord::Base)
     UnloadablePost.table_name = 'posts'