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require "test/unit"
require "cgi-lib"
require "rexml/document"

require "rss/parser"
require "rss/trackback"
require "test/common"

class TestTrackBack < Test::Unit::TestCase
	include TestRSSMixin

	def setup
		@prefix = "trackback"
		@uri = "http://madskills.com/public/xml/rss/module/trackback/"
		
		@parents = %w(item)

		@elems = {
			:ping => "http://bar.com/tb.cgi?tb_id=rssplustrackback",
			:about => "http://foo.com/trackback/tb.cgi?tb_id=20020923",
		}

		@content_nodes = @elems.collect do |name, value|
			"<#{@prefix}:#{name} rdf:resource=\"#{CGI.escapeHTML(value.to_s)}\"/>"
		end.join("\n")

		@rss_source = make_RDF(<<-EOR, {@prefix =>  @uri})
#{make_channel()}
#{make_image()}
#{make_item(@content_nodes)}
#{make_textinput()}
EOR

		@rss = Parser.parse(@rss_source)
	end

	def test_parser

		assert_nothing_raised do
			Parser.parse(@rss_source)
		end

		@elems.find_all{|k, v| k == :ping}.each do |tag, value|
			assert_too_much_tag(tag.to_s, "item") do
				Parser.parse(make_RDF(<<-EOR, {@prefix => @uri}))
#{make_channel()}
#{make_item(("<" + @prefix + ":" + tag.to_s + " rdf:resource=\"" +
	CGI.escapeHTML(value.to_s) +
	"\"/>") * 2)}
EOR
			end
		end

		@elems.find_all{|k, v| k == :about}.each do |tag, value|
			assert_missing_tag("trackback:ping", "item") do
				Parser.parse(make_RDF(<<-EOR, {@prefix => @uri}))
#{make_channel()}
#{make_item(("<" + @prefix + ":" + tag.to_s + " rdf:resource=\"" +
	CGI.escapeHTML(value.to_s) +
	"\"/>") * 2)}
EOR
			end

		end

	end
	
	def test_accessor
		
		new_value = {
			:ping => "http://baz.com/trackback/tb.cgi?tb_id=20030808",
			:about => "http://hoge.com/trackback/tb.cgi?tb_id=90030808",
		}

		@elems.each do |name, value|
			@parents.each do |parent|
				elem = @rss.send(parent).send("#{RSS::TRACKBACK_PREFIX}_#{name}")
				meth = "resource"
				assert_equal(value, elem.send(meth))
				elem.send("#{meth}=", new_value[name].to_s)
				assert_equal(new_value[name], elem.send(meth))
			end
		end

	end

	def test_to_s
		
		@elems.each do |name, value|
			excepted = %Q!<#{@prefix}:#{name} rdf:resource="#{CGI.escapeHTML(value)}"/>!
			@parents.each do |parent|
				meth = "#{RSS::TRACKBACK_PREFIX}_#{name}_element"
				meth << "s" if name == :about
				assert_equal(excepted, @rss.send(parent).send(meth))
			end
		end

		REXML::Document.new(@rss_source).root.each_element do |parent|
			if @parents.include?(parent.name)
				parent.each_element do |elem|
					if elem.namespace == @uri
						assert_equal(elem.attributes["resource"], @elems[elem.name.intern])
					end
				end
			end
		end

	end
	
end