Nokogiri::XML::Reader#outer_xml issue with JRuby

comparison-of-ruby-versions.sh

wget https://gist.github.com/raw/1830890/64e63d7e21929937624629e88a3b337928f42d39/nokogiri-jruby-outer-xml-test.rb -O /tmp/nokogiri-jruby-outer-xml-test.rb
rvm ree-1.8.7-2011.03 do ruby /tmp/nokogiri-jruby-outer-xml-test.rb
rvm jruby-1.6.6 do ruby /tmp/nokogiri-jruby-outer-xml-test.rb

nokogiri-jruby-outer-xml-test.rb

require 'rubygems'
gem 'nokogiri', '>= 1.5.0'
require 'nokogiri'
require 'stringio'
require 'test/unit'

class JrubyXmlReaderOuterXmlRegressionTest < Test::Unit::TestCase

  DOCUMENT = <<-EOF
  <root-element>
    <children>
      <child n="1">
        <field>child-1</field>
      </child>
      <child n="1">
        <field>child-2</field>
      </child>
    </children>
  </root-element>
  EOF

  def test_correct_outer_html_inclusion
    xml = Nokogiri::XML::Reader.from_io(StringIO.new(DOCUMENT))

    nodelengths = []
    has_child2 = []

    xml.each do |node|
      if node.node_type == Nokogiri::XML::Reader::TYPE_ELEMENT and node.name == "child"
        nodelengths << node.outer_xml.length
        has_child2 << !!(node.outer_xml =~ /child-2/)
      end
    end

    assert_equal(nodelengths[0], nodelengths[1])
    assert(has_child2[1])
    assert(!has_child2[0])
  end

end

Shell output

[mboeh@orz:~]  % rvm ree-1.8.7-2011.03 do ruby /tmp/nokogiri-jruby-outer-xml-test.rb
Loaded suite /tmp/nokogiri-jruby-outer-xml-test
Started
.
Finished in 0.000513 seconds.

1 tests, 3 assertions, 0 failures, 0 errors
[mboeh@orz:~]  % rvm jruby-1.6.6 do ruby /tmp/nokogiri-jruby-outer-xml-test.rb
Loaded suite /tmp/nokogiri-jruby-outer-xml-test
Started
F
Finished in 0.29 seconds.

  1) Failure:
test_correct_outer_html_inclusion(JrubyXmlReaderOuterXmlRegressionTest)
    [/tmp/nokogiri-jruby-outer-xml-test.rb:34:in `test_correct_outer_html_inclusion'
     org/jruby/RubyKernel.java:2074:in `send'
     org/jruby/RubyArray.java:1614:in `each'
     org/jruby/RubyArray.java:1614:in `each']:
<130> expected but was
<64>.

1 tests, 1 assertions, 1 failures, 0 errors