AttachmentOptions now inherits from Hash

lib/paperclip/attachment_options.rb

 module Paperclip
-  class AttachmentOptions
+  class AttachmentOptions < Hash
     def initialize(options)
-      @options = {:validations => []}.merge(options)
+      options = {:validations => []}.merge(options)
+      options.each do |k, v|
+        self.[]=(k, v)
       end
-
-    def [](key)
-      @options[key]
-    end
-
-    def []=(key, value)
-      @options[key] = value
-    end
-
-    def to_hash
-      @options
     end
   end
 end

test/attachment_options_test.rb

@@ -5,6 +5,11 @@ class AttachmentOptionsTest < Test::Unit::TestCase
     Paperclip::AttachmentOptions
   end
 
+  should "be a Hash" do
+    attachment_options = Paperclip::AttachmentOptions.new({})
+    assert attachment_options.is_a?(Hash), "attachment_options is not a Hash"
+  end
+
   should "add a default empty validations" do
     options = {:arbi => :trary}
     expected = {:validations => []}.merge(options)
@@ -12,6 +17,12 @@ class AttachmentOptionsTest < Test::Unit::TestCase
     assert_equal expected, actual
   end
 
+  should "not override validations if passed to initializer" do
+    options = {:validations => "something"}
+    attachment_options = Paperclip::AttachmentOptions.new(options)
+    assert_equal "something", attachment_options[:validations]
+  end
+
   should "respond to []" do
     Paperclip::AttachmentOptions.new({})[:foo]
   end