test_namespaces_in_parsed_doc.rb

require "helper"

module Nokogiri
  module XML
    class TestNamespacesInParsedDoc < Nokogiri::TestCase
      def setup
        super
        @doc = Nokogiri::XML <<-eoxml
          <fruit xmlns="ns:fruit" xmlns:veg="ns:veg" xmlns:xlink="http://www.w3.org/1999/xlink">
              <pear>
                  <bosc/>
              </pear>
              <orange/>
              <veg:carrot>
                  <cheese xmlns="ns:dairy" xlink:href="http://example.com/cheese/"/>
              </veg:carrot>
              <meat:bacon xmlns:meat="ns:meat">
                  <apple count="2"/>
                  <veg:tomato/>
              </meat:bacon>
          </fruit>
        eoxml
      end

      def check_namespace e
        e.namespace.nil? ? nil : e.namespace.href
      end

      def test_parsed_default_ns
        assert_equal 'ns:fruit', check_namespace(@doc.root)
      end
      def test_parsed_parent_default_ns
        assert_equal 'ns:fruit', check_namespace(@doc.root.elements[0])
        assert_equal 'ns:fruit', check_namespace(@doc.root.elements[1])
      end
      def test_parsed_grandparent_default_ns
        assert_equal 'ns:fruit', check_namespace(@doc.root.elements[0].elements[0])
      end
      def test_parsed_parent_nondefault_ns
        assert_equal 'ns:veg',   check_namespace(@doc.root.elements[2])
      end
      def test_parsed_single_decl_ns_1
        assert_equal 'ns:dairy', check_namespace(@doc.root.elements[2].elements[0])
      end
      def test_parsed_nondefault_attr_ns
        assert_equal 'http://www.w3.org/1999/xlink', 
          check_namespace(@doc.root.elements[2].elements[0].attribute_nodes.find { |a| a.name =~ /href/ })
      end
      def test_parsed_single_decl_ns_2
        assert_equal 'ns:meat',  check_namespace(@doc.root.elements[3])
      end
      def test_parsed_buried_default_ns
        assert_equal 'ns:fruit',  check_namespace(@doc.root.elements[3].elements[0])
      end
      def test_parsed_buried_decl_ns
        assert_equal 'ns:veg',  check_namespace(@doc.root.elements[3].elements[1])
      end
      def test_parsed_namespace_count
        n = @doc.root.clone
        n.children.each(&:remove)
        ns_attrs = n.to_xml.scan(/\bxmlns(?::.+?)?=/)
        assert_equal 3, ns_attrs.length
      end

      def test_namespaces_under_memory_pressure_issue1155
        skip_unless_libxml2("valgrind tests should only run with libxml2")

        refute_valgrind_errors do
          # see https://github.com/sparklemotion/nokogiri/issues/1155 for background
          filename = File.join ASSETS_DIR, 'namespace_pressure_test.xml'
          doc = Nokogiri::XML File.open(filename)

          # bizarrely, can't repro without the call to #to_a
          doc.xpath('//namespace::*').to_a.each do |ns|
            ns.inspect
          end
        end
      end
    end
  end
end