test subdirs, turn warnings on

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4983 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activeresource/Rakefile

@@ -28,8 +28,9 @@ task :default => [ :test ]
 
 Rake::TestTask.new { |t|
   t.libs << "test"
-  t.pattern = 'test/*_test.rb'
+  t.pattern = 'test/**/*_test.rb'
   t.verbose = true
+  t.warning = true
 }