# File lib/merb-core/test/helpers/multipart_request_helper.rb, line 166
  def multipart_fake_request(env = {}, params = {})
    if params.empty?
      fake_request(env)
    else
      m = Post.new(params)
      body, head = m.to_multipart
      fake_request(env.merge( :content_type => head, 
                              :content_length => body.length), :post_body => body)
    end
  end