diff --git a/test/simplepay/services/test_standard.rb b/test/simplepay/services/test_standard.rb
new file mode 100644
index 0000000..53fd2d9
--- /dev/null
+++ b/test/simplepay/services/test_standard.rb
@@ -0,0 +1,80 @@
+require File.dirname(__FILE__) + '/../../test_helper'
+require 'simplepay/services/subscription'
+
+class Simplepay::Services::TestSubscription < Test::Unit::TestCase
+  
+  def self.model_class; Simplepay::Services::Standard; end
+  
+  context 'Simplepay::Services::Subscription' do
+    
+    should_have_service_field :access_key,
+                              :as       => 'accessKey', 
+                              :required => true
+
+    should_have_service_field :signature,
+                              :as       => 'signature', 
+                              :required => true
+
+    should_have_service_field :account_id,
+                              :as       => 'amazonPaymentsAccountId', 
+                              :required => true
+
+    should_have_service_field :description,
+                              :as       => 'description', 
+                              :required => true
+
+    should_have_service_field :amount,
+                              :as       => 'amount', 
+                              :required => true,
+                              :class    => Simplepay::Support::Amount
+
+    should_have_service_field :cobranding_style,
+                              :as       => 'cobrandingStyle', 
+                              :required => true
+
+    should_have_service_field :reference_id,
+                              :as       => 'referenceId', 
+                              :required => false
+
+    should_have_service_field :immediate_return,
+                              :as       => 'immediateReturn', 
+                              :required => false,
+                              :class    => Simplepay::Support::Boolean
+
+    should_have_service_field :collect_shipping_address,
+                              :as       => 'collectShippingAddress', 
+                              :required => false,
+                              :class    => Simplepay::Support::Boolean
+
+    should_have_service_field :process_immediately,
+                              :as       => 'processImmediate', 
+                              :required => false,
+                              :class    => Simplepay::Support::Boolean
+
+    should_have_service_field :return_url,
+                              :as       => 'returnUrl', 
+                              :required => false
+
+    should_have_service_field :abandon_url,
+                              :as       => 'abandonUrl', 
+                              :required => false
+
+    should_have_service_field :ipn_url,
+                              :as       => 'ipnUrl', 
+                              :required => false
+
+    should_have_service_field :variable_marketplace_fee,
+                              :as       => 'variableMarketplaceFee', 
+                              :required => false
+
+    should_have_service_field :fixed_marketplace_fee,
+                              :as       => 'fixedMarketplaceFee', 
+                              :required => false
+
+    should_have_service_field :donation_widget,
+                              :as       => 'isDonationWidget', 
+                              :required => false
+
+  end
+  
+end
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