require File.join(File.dirname(__FILE__), '../external_test_helper.rb') 
require 'external/base'
require 'tempfile'

class BaseTest < Test::Unit::TestCase
  include Benchmark
  include External

  acts_as_file_test
  
  attr_reader :array, :ab, :tempfile

  def setup
    @array = ('a'..'z').to_a
    @tempfile = Tempfile.new("abtest")
    @tempfile << array.to_s
    @ab = Base.new(@tempfile)
  end
  
  def teardown
    tempfile.close unless tempfile.closed?
  end

  #
  # setup tests
  #

  def test_setup
    assert_equal ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"], array
    assert_equal "abcdefghijklmnopqrstuvwxyz", array.to_s
    
    tempfile.pos = 0
    assert_equal "abcdefghijklmnopqrstuvwxyz", tempfile.read
  end

  #
  # initialize test
  #
  
  def test_io_points_to_tempfile_when_io_is_nil
    begin
      ab = Base.new(nil)
      assert ab.io != nil
      assert_equal Tempfile, ab.io.class
      assert ab.io.path =~ Regexp.new("^" + Dir.tmpdir)
    ensure
      ab.close if ab
    end
  end
  
  # def test_options_are_set_during_initialize
  #   assert_equal 10000, ab.max_gap
  #   assert_equal 1000000, ab.max_chunk_size
  #   
  #   ab = Base.new(nil, :max_gap => 1, :max_chunk_size => 10)
  #   assert_equal 1, ab.max_gap
  #   assert_equal 10, ab.max_chunk_size
  # end
  
  #
  # close, closed? test
  #

  def test_close_closes_io
    assert !ab.io.closed?
    ab.close
    assert ab.io.closed?
  end
  
  def test_closed_returns_closed_state_of_io
    ab.io.close   
    assert ab.closed?
  end
end