Testing acts_as_attachment?

Hi,

I found this test helper on the Rails wiki, works like a charm.

  # returns an uploaded screenshot you can use to test file uploads in
your controllers
  def uploaded_screenshot
    uploaded_file("#{File.expand_path(RAILS_ROOT)}/test/fixtures/
samplescreenshot.jpg", "image/jpeg")
  end

  # returns an uploaded movie you can use to test file uploads in your
controllers
  def uploaded_movie
    uploaded_file("#{File.expand_path(RAILS_ROOT)}/test/fixtures/
samplemovie.flv", "video/flv")
  end

  # get us an object that represents an uploaded file
  def uploaded_file(path, content_type="application/octet-stream",
filename=nil)
    filename ||= File.basename(path)
    t = Tempfile.new(filename)
    FileUtils.copy_file(path, t.path)
    (class << t; self; end;).class_eval do
      alias local_path path
      define_method(:original_filename) { filename }
      define_method(:content_type) { content_type }
    end
    return t
  end

put that in test_helper.rb

Then in your controller test, put this:

  # update a fragment
  # uses test helper uploaded_screenshot() to simulate a file upload
  def test_should_update_fragment
    put :update, :id => 1, :fragment => { :title => 'new f' },
                                     :screenshot => { :uploaded_data
=> uploaded_screenshot }

    assert_redirected_to fragment_path(assigns(:fragment)),
assigns(:fragment).errors.inspect
  end