File: about_hashes.rb
Line: 4
  def test_creating_hashes
    empty_hash = Hash.new
    assert_equal {}.class, empty_hash.class // here's the issue
    assert_equal({}, empty_hash)
    assert_equal 0, empty_hash.size
  end

When run i get after the great ascii art:
path_to_enlightenment.rb:10:in `require': ./about_hashes.rb:6: syntax error, unexpected '\n', expecting tCOLON2 or '[' or '.' (SyntaxError)
	from path_to_enlightenment.rb:10
macmac:01.koans borjo$
macmac:01.koans borjo$ ruby --version
ruby 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin10.0]
macmac:01.koans borjo$