gistfile1.txt

## gem file bogus.rb

module ActiveMerchant #:nodoc:
  module Billing #:nodoc:
    # Bogus Gateway
    class BogusGateway < Gateway
      AUTHORIZATION = '53433'
      
      SUCCESS_MESSAGE = "Bogus Gateway: Forced success"
...


## File: config/initializers/active_merchant/bogus.rb

class BogusGateway < ActiveMerchant::Billing::Gateway
  def authorize(money, creditcard_or_id, options = {})
     # (abbreviated)
     Response.new(true, SUCCESS_MESSAGE)
  end
end

## spec_helper.rb
       include ActiveMerchant::Billing

## spec
          result.message.should == BogusGateway::SUCCESS_MESSAGE

## Error:
uninitialized constant BogusGateway::SUCCESS_MESSAGE

## when i change the spec to this is works

result.message.should == ActiveMerchant::Billing::BogusGateway::SUCCESS_MESSAGE

## perhaps rspec_helper is called before the initializer?