Please teach me how to monitoring unit test

[onigra]

Sorry, my english is terrible.

I want to monitoring test in rspec.
i tried below, but "create!" doesn't puts stdout.
Please teach me something wrong point.

Thanks.

https://github.com/onigra/fssm_test

# test.rb

require 'fssm'

module Foo
  def self.run
    FSSM.monitor(File.expand_path("./lib/tmp"), "**/*") do
      create { |monitoring_dir, new_file| puts "create!" }
    end
  end
end

# Foo.run

# test_spec.rb

require 'spec_helper'

describe Foo do
  before :all do
    @path = File.expand_path("./lib/tmp")
    @pid = fork { Foo.run }
  end

  after :all do
    Process.kill "KILL", @pid
    File.delete "#{@path}/file"
  end

  describe ".run" do
    it "puts create!" do
      FileUtils.touch "#{@path}/file"
    end
  end
end