Added test cases to ensure it works with attr_protected

git-svn-id: https://svn.thoughtbot.com/plugins/paperclip/trunk@411 7bbfaf0e-4d1d-0410-9690-a8bb5f8ef2aa

test/helper.rb

@@ -22,6 +22,7 @@ ActiveRecord::Base.establish_connection(config[ENV['RAILS_ENV'] || 'test'])
 
 def rebuild_model options = {}
   ActiveRecord::Base.connection.create_table :dummies, :force => true do |table|
+    table.column :other, :string
     table.column :avatar_file_name, :string
     table.column :avatar_content_type, :string
     table.column :avatar_file_size, :integer

test/test_paperclip.rb

@@ -4,6 +4,36 @@ class PaperclipTest < Test::Unit::TestCase
   context "An ActiveRecord model with an 'avatar' attachment" do
     setup do
       rebuild_model
+      @file = File.new(File.join(FIXTURES_DIR, "5k.png"))
+    end
+
+    context "that is attr_protected" do
+      setup do
+        Dummy.class_eval do
+          attr_protected :avatar
+        end
+        @dummy = Dummy.new
+      end
+
+      should "not assign the avatar on mass-set" do
+        @dummy.logger.expects(:debug)
+
+        @dummy.attributes = { :other => "I'm set!",
+                              :avatar => @file }
+        
+        assert_equal "I'm set!", @dummy.other
+        assert ! @dummy.avatar?
+      end
+
+      should "still allow assigment on normal set" do
+        @dummy.logger.expects(:debug).times(0)
+
+        @dummy.other  = "I'm set!"
+        @dummy.avatar = @file
+        
+        assert_equal "I'm set!", @dummy.other
+        assert @dummy.avatar?
+      end
     end
 
     should "have an #avatar method" do