Ruby 1.9.3 no longer makes a long number a BigDecimal, it seems.

https://github.com/sferik/multi_xml/issues/18

--- spec/parser_shared_example.rb.~1~	2011-12-28 12:54:08.770134726 +0100
+++ spec/parser_shared_example.rb	2011-12-28 12:54:55.186385918 +0100
@@ -302,7 +302,7 @@
         end
 
         it "should return the correct number" do
-          MultiXml.parse(@xml)['tag'].should == 3.14159265358979323846264338327950288419716939937510
+          MultiXml.parse(@xml)['tag'].should == BigDecimal.new('3.14159265358979323846264338327950288419716939937510')
         end
       end