Added wiki macros support. 2 builtin macros are defined: hello_world (sample macro that displays the arguments) and macro_list (display the list of installed macros).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@897 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/helpers/application_helper_test.rb

@@ -70,4 +70,9 @@ class ApplicationHelperTest < HelperTestCase
     @project = Project.find(1)
     to_test.each { |text, result| assert_equal "<p>#{result}</p>", textilizable(text) }
   end
+  
+  def test_macro_hello_world
+    text = "{{hello_world}}"
+    assert textilizable(text).match(/Hello world!/)
+  end
 end