Merge pull request #32 from ruby/use-test-unit-ruby-core

Use test-unit-ruby-core gem

Author: hsbt

Gemfile

@@ -5,3 +5,4 @@ gemspec
 gem "rake"
 gem "rake-compiler"
 gem "test-unit"
+gem "test-unit-ruby-core"

Rakefile

@@ -7,13 +7,6 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-task :sync_tool do
-  require 'fileutils'
-  FileUtils.cp "../ruby/tool/lib/core_assertions.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/envutil.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/find_executable.rb", "./test/lib"
-end
-
 require 'rake/extensiontask'
 Rake::ExtensionTask.new("pathname")