added resizer

test/test_helper.rb

@@ -9,4 +9,20 @@ require 'rails/test_help'
 Dir[File.expand_path(File.dirname(__FILE__) + "/factories/*.rb")].each {|file| require file}
 
 class ActiveSupport::TestCase
+protected
+  def upload_file(path, content_type, filename)
+  	tempfile = Tempfile.new(filename)
+  	FileUtils.copy_file(path, tempfile.path)
+  	(class << tempfile; self; end).class_eval do
+  		alias local_path path
+  		define_method(:original_filename) {filename}
+  		define_method(:content_type) {content_type}
+  	end
+
+  	tempfile
+  end
+
+  def upload_jpeg(path)
+  	upload_file(path, "image/jpeg", File.basename(path))
+  end
 end