2 files changed, 17 insertions, 1 deletions
diff --git a/actionpack/test/controller/mime_responds_test.rb b/actionpack/test/controller/mime_responds_test.rb
index bdcd5561a8..c8e036b116 100644
--- a/actionpack/test/controller/mime_responds_test.rb
+++ b/actionpack/test/controller/mime_responds_test.rb
@@ -505,7 +505,7 @@ class RespondToControllerTest < ActionController::TestCase
 end
 
 class RespondWithController < ActionController::Base
-  respond_to :html, :json
+  respond_to :html, :json, :touch
   respond_to :xml, :except => :using_resource_with_block
   respond_to :js,  :only => [ :using_resource_with_block, :using_resource, 'using_hash_resource' ]
 
@@ -623,12 +623,14 @@ class RespondWithControllerTest < ActionController::TestCase
     super
     @request.host = "www.example.com"
     Mime::Type.register_alias('text/html', :iphone)
+    Mime::Type.register_alias('text/html', :touch)
     Mime::Type.register('text/x-mobile', :mobile)
   end
 
   def teardown
     super
     Mime::Type.unregister(:iphone)
+    Mime::Type.unregister(:touch)
     Mime::Type.unregister(:mobile)
   end
 
diff --git a/actionpack/test/dispatch/mime_type_test.rb b/actionpack/test/dispatch/mime_type_test.rb
index 9d77c3acc5..ed012093a7 100644
--- a/actionpack/test/dispatch/mime_type_test.rb
+++ b/actionpack/test/dispatch/mime_type_test.rb
@@ -118,6 +118,20 @@ class MimeTypeTest < ActiveSupport::TestCase
     end
   end
 
+  test "register callbacks" do
+    begin
+      registered_mimes = []
+      Mime::Type.register_callback do |mime|
+        registered_mimes << mime
+      end
+
+      Mime::Type.register("text/foo", :foo)
+      assert_equal registered_mimes, [Mime::FOO]
+    ensure
+      Mime::Type.unregister(:FOO)
+    end
+  end
+
   test "custom type with extension aliases" do
     begin
       Mime::Type.register "text/foobar", :foobar, [], [:foo, "bar"]