Using the sum of bytes instead the hash of the path when replacing the...

Using the sum of bytes instead the hash of the path when replacing the wildcard of the assets path because in ruby 1.9 is not consistent

actionpack/lib/action_view/asset_paths.rb

@@ -111,7 +111,8 @@ def compute_asset_host(source)
           args << current_request if (arity > 1 || arity < 0) && has_request?
           host.call(*args)
         else
-          (host =~ /%d/) ? host % (source.hash % 4) : host
+          source_num = source.bytes.sum
+          (host =~ /%d/) ? host % (source_num % 4) : host
         end
       end
     end

actionpack/test/template/asset_tag_helper_test.rb

@@ -689,9 +689,9 @@ def test_caching_javascript_include_tag_when_caching_on_and_using_subdirectory
     @controller.config.asset_host = 'http://a%d.example.com'
     config.perform_caching = true
 
-    hash = '/javascripts/cache/money.js'.hash % 4
+    number = '/javascripts/cache/money.js'.bytes.sum % 4
     assert_dom_equal(
-      %(<script src="http://a#{hash}.example.com/javascripts/cache/money.js" type="text/javascript"></script>),
+      %(<script src="http://a#{number}.example.com/javascripts/cache/money.js" type="text/javascript"></script>),
       javascript_include_tag(:all, :cache => "cache/money")
     )
 
@@ -1129,6 +1129,7 @@ def test_should_ignore_asset_host_on_scheme_relative_url
   end
 
   def test_should_wildcard_asset_host_between_zero_and_four
+    String.any_instance.expects(:hash).times(0)
     @controller.config.asset_host = 'http://a%d.example.com'
     assert_match(%r(http://a[0123].example.com/collaboration/hieraki/images/xml.png), image_path('xml.png'))
   end