support.rb in ruby-graphviz-0.9.20

- old
+ new

@@ -1,10 +1,14 @@
 require 'rubygems'
 require 'test/unit'
+begin
 require 'ruby-debug'
+rescue LoadError
+end
+require 'stringio'
 
-root = File.expand_path('../..',__FILE__)
+root = File.expand_path('../../lib',__FILE__)
 $:.unshift(root) unless $:.include?(root)
 
 require 'graphviz'
 
 # hack so that the example scripts don't unnecessarily unshift @todo
@@ -17,11 +21,11 @@
 module TestSupport
   extend self
 
   # @todo move to app?
   def windows?
-    /Windows/ =~ ENV['OS']
+    /mswin|mingw/ =~ RUBY_PLATFORM
   end
 
   def dev_null
     windows? ? 'NUL' : '/dev/null'
   end
@@ -49,9 +53,10 @@
     # which for me was failing silently when i forgot to make the appropriate
     # ones public.  hack!
     #
 
     except = %w(inspect kind_of?)
+    except += except.map{|x| x.to_sym } # for Ruby 1.9
     these = ancestors[0].instance_methods
     # these = [1,2,3].map{|x| ancestors[x].instance_methods(false)}.flatten
     eraseme = (these - except)
     eraseme.each{ |name| protected name }
     attr_reader :io