non added test from last merge

spec/exceptional/controller_exception_data_spec.rb

@@ -0,0 +1,26 @@
+require File.dirname(__FILE__) + '/../spec_helper'
+require 'digest/md5'
+
+
+class Exceptional::FunkyError < StandardError
+  def backtrace
+    'backtrace'
+  end
+end
+
+class BrokenJSON
+  def to_json
+    boom.time!
+  end
+end
+
+describe Exceptional::ControllerExceptionData do
+  it "raises useful error when to_json isn't available on to_hash" do
+    request = ActionController::TestRequest.new
+    brokenJson = BrokenJSON.new
+    session = {:boom => brokenJson}
+    request.stub!(:session).and_return(session)
+    data = Exceptional::ControllerExceptionData.new(Exceptional::FunkyError.new, nil, request)
+    JSON.parse(data.to_json)['request']['session']['data'].should == {"boom" => brokenJson.to_s}
+  end
+end