require "helper"

module Nokogiri
  module XML
    class TestC14N < Nokogiri::TestCase
      # http://www.w3.org/TR/xml-c14n#Example-OutsideDoc
      def test_3_1
        doc = Nokogiri.XML <<-eoxml
<?xml version="1.0"?>

<?xml-stylesheet   href="doc.xsl"
   type="text/xsl"   ?>

<!DOCTYPE doc SYSTEM "doc.dtd">

<doc>Hello, world!<!-- Comment 1 --></doc>

<?pi-without-data     ?>

<!-- Comment 2 -->

<!-- Comment 3 -->
        eoxml

        c14n = doc.canonicalize
        assert_no_match(/version=/, c14n)
        assert_match(/Hello, world/, c14n)
        assert_no_match(/Comment/, c14n)
        c14n = doc.canonicalize(nil, nil, true)
        assert_match(/Comment/, c14n)
        c14n = doc.canonicalize(nil, nil, false)
        assert_no_match(/Comment/, c14n)
      end

      def test_exclude_block_params
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        list = []
        doc.canonicalize do |node, parent|
          list << [node, parent]
          true
        end
        if Nokogiri.jruby?
          assert_equal(
            ['a', 'document', 'document', nil, 'b', 'a'],
            list.flatten.map { |x| x ? x.name : x }
          )
        else
          assert_equal(
            ['a', 'document', 'document', nil, 'b', 'a', 'a', 'document'],
            list.flatten.map { |x| x ? x.name : x }
          )
        end
      end

      def test_exclude_block_true
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        c14n = doc.canonicalize do |node, parent|
          true
        end
        assert_equal xml, c14n
      end

      def test_exclude_block_false
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        c14n = doc.canonicalize do |node, parent|
          false
        end
        assert_equal '', c14n
      end

      def test_exclude_block_nil
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        c14n = doc.canonicalize do |node, parent|
          nil
        end
        assert_equal '', c14n
      end

      def test_exclude_block_object
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        c14n = doc.canonicalize do |node, parent|
          Object.new
        end
        assert_equal xml, c14n
      end

      def test_c14n_node
        xml = '<a><b><c></c></b></a>'
        doc = Nokogiri.XML xml
        c14n = doc.at_xpath('//b').canonicalize
        assert_equal '<b><c></c></b>', c14n
      end

      def test_c14n_modes
        # http://www.w3.org/TR/xml-exc-c14n/#sec-Enveloping
        
        doc1 = Nokogiri.XML <<-EOXML
<n0:local xmlns:n0="http://foobar.org" xmlns:n3="ftp://example.org">
  <n1:elem2 xmlns:n1="http://example.net" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"/>
  </n1:elem2>
</n0:local>        
        EOXML

        doc2 = Nokogiri.XML <<-EOXML
<n2:pdu xmlns:n1="http://example.com"
           xmlns:n2="http://foo.example"
           xmlns:n4="http://foo.example"
           xml:lang="fr"
           xml:space="retain">
  <n1:elem2 xmlns:n1="http://example.net" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"/>
    <n4:stuff />
  </n1:elem2>
</n2:pdu>        
        EOXML

        c14n = doc1.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize
        assert_equal '<n1:elem2 xmlns:n0="http://foobar.org" xmlns:n1="http://example.net" xmlns:n3="ftp://example.org" xml:lang="en">
    <n3:stuff></n3:stuff>
  </n1:elem2>', c14n

        expected = '<n1:elem2 xmlns:n1="http://example.net" xmlns:n2="http://foo.example" xmlns:n4="http://foo.example" xml:lang="en" xml:space="retain">
    <n3:stuff xmlns:n3="ftp://example.org"></n3:stuff>
    <n4:stuff></n4:stuff>
  </n1:elem2>'
        c14n = doc2.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize
        assert_equal expected, c14n

        expected = '<n1:elem2 xmlns:n1="http://example.net" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"></n3:stuff>
  </n1:elem2>'
        c14n = doc1.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize(XML::XML_C14N_EXCLUSIVE_1_0)
        assert_equal expected, c14n

        expected = '<n1:elem2 xmlns:n1="http://example.net" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"></n3:stuff>
    <n4:stuff xmlns:n4="http://foo.example"></n4:stuff>
  </n1:elem2>'
        c14n = doc2.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize(XML::XML_C14N_EXCLUSIVE_1_0)
        assert_equal expected, c14n

        expected = '<n1:elem2 xmlns:n1="http://example.net" xmlns:n2="http://foo.example" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"></n3:stuff>
    <n4:stuff xmlns:n4="http://foo.example"></n4:stuff>
  </n1:elem2>'
        c14n = doc2.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize(XML::XML_C14N_EXCLUSIVE_1_0, ['n2'])
        assert_equal expected, c14n

        expected = '<n1:elem2 xmlns:n1="http://example.net" xmlns:n2="http://foo.example" xmlns:n4="http://foo.example" xml:lang="en">
    <n3:stuff xmlns:n3="ftp://example.org"></n3:stuff>
    <n4:stuff></n4:stuff>
  </n1:elem2>'
        c14n = doc2.at_xpath('//n1:elem2', {'n1' => 'http://example.net'}).canonicalize(XML::XML_C14N_EXCLUSIVE_1_0, ['n2', 'n4'])
        assert_equal expected, c14n
      end

      def test_wrong_params
        xml = '<a><b></b></a>'
        doc = Nokogiri.XML xml

        assert_raise(TypeError){ doc.canonicalize :wrong_type }
        assert_raise(TypeError){ doc.canonicalize nil, :wrong_type }
        doc.canonicalize nil, nil, :wrong_type
      end


    end
  end
end