Tests unitaires et doc

lib/site_plugin.rb

@@ -17,8 +17,14 @@ class SitePlugin
         @@repository.find { |handler| handler.can_handle? site }
     end
 
-    # A place holder method. This method *must* be implemented in the subclasses.
-    def can_handle?(site)
-        raise "Method not implemented !"
+    # Raise an error message if the missing method should have been implemented
+    # in the subclasse. This possible methode are:
+    # * <tt>#can_handle?</tt>
+    # * <tt>#get</tt>
+    #
+    #  They *must* be implemented by the subclasse.
+    def method_missing(method)
+        return unless ['can_handle?', 'get'].include(method)
+        raise "Method #{method} not implemented !"
     end
 end

plugins/youtube_plugin.rb

@@ -3,13 +3,13 @@ require_relative '../lib/site_plugin.rb'
 require 'rubygems'
 require 'youtube_it'
 
+# SitePlugin for YouTube
 class YoutubePlugin < SitePlugin
     def self.can_handle?(site) 
         site =~ /^http:\/\/((www.)?youtube.(fr|com)\/watch\?v=|youtu\.be\/)[a-zA-Z0-9]+$/
     end
 
     public
-    # Store a new youtube api client
     def initialize
         @client = YouTubeIt::Client.new
     end