File.here.rb

# Require slash
# by Aaron Patterson
# inspired by Josh Susser

# use to require files relative to the current file:
#
# require __FILE__/"lib"/"foo"
# require __FILE__/%{lib foo}

class String
  def / *parts
    File.expand_path(
      File.join(File.file?(self) ? File.dirname(self) : self, *parts)
    )
  end
end

require 'test/unit'

class TestAwesome < Test::Unit::TestCase
  def setup
    @target = File.expand_path(File.join(File.dirname(__FILE__), 'lib', 'foo'))
  end

  def test_slashes
    assert_equal(@target, __FILE__/"lib"/"foo")
  end

  def test_array
    assert_equal(@target, __FILE__ / %w{lib foo})
  end

  def test_strings_with_slashes
    assert_equal(@target, __FILE__/"lib/foo")
  end
end