overwrite_payflow_api.rb

module OverwritePayflowAPI
  def self.included(base)
    base.alias_method_chain :commit, :retry
  end
  
  def commit_with_retry(request_body, request_type = nil)
    # Payflow Pro purchases by reference have a habit of failing in tests, probably due to speed with which tests are executed. 
    # This ensures that the purchase is attempted a maximum number of times with a 1-sec sleep in between. This feature can be 
    # turned off by calling 'disable_ensure_purchase' in your test.
    result = commit_without_retry(request_body, request_type)
    10.times do 
      return result if result.success?
      result = commit_without_retry(request_body, request_type)
      sleep(1)
    end unless ENV['DISABLE_ENSURE_PURCHASE']

    return result
  end
end

ActiveMerchant::Billing::PayflowCommonAPI.send(:include, OverwritePayflowAPI)