tmp.rb

require 'tempfile'
require 'java' if defined?(JRUBY_VERSION)
require 'test/unit'
require 'fileutils'

class TestTempfilesCleanUp < Test::Unit::TestCase

  def setup
    @tmpdir = "tmp_#{$$}"
    Dir.mkdir @tmpdir rescue nil
  end

  def teardown
    FileUtils.rm_f @tmpdir
  end

  def test_cleanup
    path = Tempfile.open('blah', @tmpdir).path
    
    # fails on MRI without this!!! :)
    p path

    # test that it's there
    assert File.exist?(path), 'file was not created'

    # fails on MRI without this!!!
    10.times { Tempfile.open('blah', @tmpdir) }

    100.times do
      if defined?(JRUBY_VERSION)
        java.lang.System.gc
      else
        GC.start
      end
    end

    # test that the file is gone
    assert !File.exist?(path), 'file was not cleaned up'
  end
end