* lib/rss/taxonomy.rb: implemented taxonomy module.

* test/rss/test_taxonomy.rb: added tests for taxonomy support.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9555 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rss/test_taxonomy.rb

@@ -0,0 +1,148 @@
+require "cgi"
+
+require "rss-testcase"
+
+require "rss/1.0"
+require "rss/2.0"
+require "rss/taxonomy"
+
+module RSS
+  class TestTaxonomy < TestCase
+    
+    def setup
+      @prefix = "taxo"
+      @uri = "http://purl.org/rss/1.0/modules/taxonomy/"
+      @dc_prefix = "dc"
+      @dc_uri = "http://purl.org/dc/elements/1.1/"
+
+      @ns = {
+        @prefix => @uri,
+        @dc_prefix => @dc_uri,
+      }
+      
+      @parents = %w(channel item)
+      
+      @topics_lis = [
+        "http://meerkat.oreillynet.com/?c=cat23",
+        "http://meerkat.oreillynet.com/?c=47",
+        "http://dmoz.org/Computers/Data_Formats/Markup_Languages/XML/",
+      ]
+
+      @topics_node = "<#{@prefix}:topics>\n"
+      @topics_node << "  <rdf:Bag>\n"
+      @topics_lis.each do |value|
+        resource = CGI.escapeHTML(value)
+        @topics_node << "    <rdf:li resource=\"#{resource}\"/>\n"
+      end
+      @topics_node << "  </rdf:Bag>\n"
+      @topics_node << "</#{@prefix}:topics>"
+
+      @topic_topics_lis = \
+      [
+       "http://meerkat.oreillynet.com/?c=cat23",
+       "http://dmoz.org/Computers/Data_Formats/Markup_Languages/SGML/",
+       "http://dmoz.org/Computers/Programming/Internet/",
+      ]
+
+      @topic_contents = \
+      [
+       {
+         :link => "http://meerkat.oreillynet.com/?c=cat23",
+         :title => "Data: XML",
+         :description => "A Meerkat channel",
+       },
+       {
+         :link => "http://dmoz.org/Computers/Data_Formats/Markup_Languages/XML/",
+         :title => "XML",
+         :subject => "XML",
+         :description => "DMOZ category",
+         :topics => @topic_topics_lis,
+       }
+      ]
+
+      @topic_nodes = @topic_contents.collect do |info|
+        link = info[:link]
+        rv = "<#{@prefix}:topic rdf:about=\"#{link}\">\n"
+        info.each do |name, value|
+          case name
+          when :topics
+            rv << "<#{@prefix}:topics>\n"
+            rv << "  <rdf:Bag>\n"
+            value.each do |li|
+              resource = CGI.escapeHTML(li)
+              rv << "    <rdf:li resource=\"#{resource}\"/>\n"
+            end
+            rv << "  </rdf:Bag>\n"
+            rv << "</#{@prefix}:topics>"
+          else
+            prefix = (name == :link ? @prefix : @dc_prefix)
+            rv << "  <#{prefix}:#{name}>#{value}</#{prefix}:#{name}>\n"
+          end
+        end
+        rv << "</#{@prefix}:topic>"
+      end.join("\n")
+      
+      @rss_source = make_RDF(<<-EOR, @ns)
+#{make_channel(@topics_node)}
+#{make_image()}
+#{make_item(@topics_node)}
+#{make_textinput()}
+#{@topic_nodes}
+EOR
+
+      @rss = Parser.parse(@rss_source)
+    end
+
+    def test_parser
+      assert_nothing_raised do
+        Parser.parse(@rss_source)
+      end
+      
+      assert_too_much_tag("topics", "channel") do
+        Parser.parse(make_RDF(<<-EOR, @ns))
+#{make_channel(@topics_node * 2)}
+#{make_item()}
+EOR
+      end
+
+      assert_too_much_tag("topics", "item") do
+        Parser.parse(make_RDF(<<-EOR, @ns))
+#{make_channel()}
+#{make_item(@topics_node * 2)}
+EOR
+      end
+    end
+  
+    def test_accessor
+      topics = @rss.channel.taxo_topics
+      assert_equal(@topics_lis.sort,
+                   topics.Bag.lis.collect {|li| li.resource}.sort)
+
+      assert_equal(@rss.taxo_topics.first, @rss.taxo_topic)
+
+      @topic_contents.each_with_index do |info, i|
+        topic = @rss.taxo_topics[i]
+        info.each do |name, value|
+          case name
+          when :link
+            assert_equal(value, topic.about)
+            assert_equal(value, topic.taxo_link)
+          when :topics
+            assert_equal(value.sort,
+                         topic.taxo_topics.Bag.lis.collect {|li| li.resource}.sort)
+          else
+            assert_equal(value, topic.__send__("dc_#{name}"))
+          end
+        end
+      end
+    end
+    
+    def test_to_s
+      @parents.each do |parent|
+        meth = "taxo_topics_element"
+        assert_equal(@topics_node, @rss.__send__(parent).funcall(meth))
+      end
+    end
+  end
+end
+