RDiscount is required to run the test suite.

README.textile

@@ -35,6 +35,7 @@ h2. Developer Dependencies
 * Shoulda: Test framework (Ruby)
 * RR: Mocking (Ruby)
 * RedGreen: Nicer test output (Ruby)
+* RDiscount: Discount Markdown Processor (Ruby)
 
 h2. License
 

test/helper.rb

@@ -7,7 +7,6 @@ require 'RedCloth'
 require 'rdiscount'
 
 require 'test/unit'
-require 'redgreen'
 require 'shoulda'
 require 'rr'
 

test/suite.rb

@@ -1,9 +1,11 @@
+require 'rubygems'
+gem 'test-unit'
 require 'test/unit'
 
 # for some reason these tests fail when run via TextMate
 # but succeed when run on the command line.
 
-tests = Dir["#{File.dirname(__FILE__)}/test_*.rb"]
+tests = Dir[File.expand_path("#{File.dirname(__FILE__)}/test_*.rb")]
 tests.each do |file|
   require file
 end

test/test_tags.rb

@@ -1,3 +1,5 @@
+# coding: utf-8
+
 require File.dirname(__FILE__) + '/helper'
 
 class TestTags < Test::Unit::TestCase