How to include library in rubymine unit tests

I have an Rails 3 App, here i have a unit test in test/unit/test.rb

require "test/unit"
require "lib/feeder"

class LinkParserTest < Test::Unit::TestCase

  def test_with_single_host
    **some code**
  开发者_StackOverflow  assert_equal(links,Feeder.link_parser(entry_summary,host))
  end

if i run test in console by using ruby -I. test/unit/link_parser_test.rb command everything works perfectly but if i run test in RubyMine it says require: no such file to load -- lib/feeder (LoadError)

what i am doing wrong?

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got it, rubymine runing ruby -Itest test/unit/link_parser_test.rb command (so it starts in test folder) i had to change require to require "./lib/feeder" and it works normaly